Publications

## 2024

[1] Harivignesh A, Arunesh Anbukani and K.Giridhar, "On Reducing the Search Complexity for PMI Selection in Codebook-based 5G NR Systems", accepted for publication in IEEE 99th Vehicular Technology Conference: VTC 2024-Spring.[2] S.Sowmya, Gokularam M, and K.Giridhar, "Low-Complexity Linear Decoupling of Uers for Uplink Massive MU-MIMO Detection", accepted in IEEE 99th Vehicular Technology Conference: VTC 2024-Spring.

[3] G. Muthukrishnan, S. Sruti and K. Giridhar, “Using DCFT for Multi-Target Detection in Distributed Radar Systems with Several Transmitters”, accepted in 2024 IEEE Radar Conference.

[4] Arunesh Anbukani, Harivignesh A, and K.Giridhar, "Exploiting CSI-RS Structure for Efficient Fronthaul Functional Split in 5G O-RAN and Low Complexity Channel Estimation", accepted in 2024 IEEE Wireless Communications and Networking Conference (WCNC).

[5] Singh Sweta, and K. Giridhar. "A Novel Local and Hyper-Local Multicast Services Transmission Scheme for Beyond 5G Networks." arXiv preprint arXiv:2402.03963 (2024).

## 2023

[1] S. Sruti, A. Anil Kumar, and K. Giridhar, "RCS-Based Imaging of Extended Targets for Classification in Multistatic Radar Systems", 2023 IEEE Radar Conference (RadarConf23), San Antonio, TX, USA, 2023, pp. 1-6.[2] C. Ramanathan, S. Y. Desai, S. Banerjee and K. Giridhar, "Frequency Projection: A Review and its application in channel modelling," 2023 National Conference on Communications (NCC), Guwahati, India, 2023, pp. 1-6.

[3] Abhay Mohan M V , Giridhar K . Interference-Managed Local Service Insertion for 5G Broadcast. TechRxiv. March 17, 2023.

[4] S. Banerjee, S. Desai, K. M. Yelamarty, Harivignesh A, M. L. Narayana and K. Giridhar, "On Provisioning Link Margin for High Bit Rate Q/V Band LEO Communication for Autonomous Vehicles," 2023 IEEE 98th Vehicular Technology Conference (VTC2023-Fall), Hong Kong, Hong Kong, 2023, pp. 1-7.

[5] R. Vignesh and K. Giridhar, "Novel Preamble for Accurate Synchronization of Frequency Hopped OFDM Links," 2023 IEEE 97th Vehicular Technology Conference (VTC2023-Spring), Florence, Italy, 2023, pp. 1-6.

## 2022

[1] M. V. A. Mohan and K. Giridhar, "Interference-Aware Accurate Signal Recovery in Sub-1 GHz UHF Band Reuse-1 Cellular OFDMA Downlinks," in IEEE Open Journal of the Communications Society, vol. 3, pp. 2087-2105, 2022.[2] S. Sruti, K. Teja, and K. Giridhar, "Performance Comparison of OTFS and MC-CDMA with Channel Estimation and Power Back-Off" 2022 IEEE Military Communications Conference (MILCOM), pp. 693-698.

[3] S. Sruti, K. Teja and K. Giridhar, "Non-Parametric Adaptive Thresholding for Channel Estimation of OTFS-Based 6G Communication Links," 2022 IEEE Globecom Workshops, Rio de Janeiro, Brazil, 2022, pp. 1561-1566.

[4] R. Preethi, M. M. V. Abhay and K. Giridhar, "Exploiting Implicit OVSF Structure in DM-RS for Improved Channel Estimation in 5G NR Systems," 2022 IEEE 95th Vehicular Technology Conference: (VTC2022-Spring), Helsinki, Finland, 2022, pp. 1-6.

## 2021

[1] S. Sruti, C. Deepti, and K. Giridhar, "Non-Parametric and Geometric Multi-Target Data Association for Distributed MIMO Radars," 2021 IEEE Military Communications Conference (MILCOM), pp. 601-606.[2] D. Basak, S. Sruti, and K. Giridhar, "Comparing Pre-coded MC-CDMA and OTFS for High-Speed V2X Communications," 2021 IEEE 94th Vehicular Technology Conference (VTC2021-Fall), 2021, pp. 1-5.

[3] C. Ramanathan, C. R. Venkatesh and K. Giridhar, "Mitigating blockage of transmission and reception due to rotor blades in air-to-air data link using single-carrier block modulation," MILCOM 2021 - 2021 IEEE Military Communications Conference (MILCOM), San Diego, CA, USA, 2021, pp. 868-873.

[4] S. Mishra, L. Salaün, C. S. Chen and K. Giridhar, "Analysis of Downlink Connectivity in NB-IoT Networks employing NOMA with Imperfect SIC," European Conference on Networks and Communications (EuCNC-2021) and 6G Summit, Porto, Portugal, June 2021.

## 2020

[1] S. A. Nambi and K. Giridhar, "Index and Constellation Order Lowering for OFDM with Index Modulation," in IEEE Communications Letters, (accepted for publication), Feb. 2020.[2] S. Desai and K. Giridhar, "Low Complexity Quasi-MLM Modulation Classification based Optimal Overloaded MU-MIMO Receiver," 2020 IEEE 91st Vehicular Technology Conference (VTC2020-Spring), Antwerp, Belgium, 2020, pp. 1-5.

## 2019

[1] S. A. Nambi and K. Giridhar, "Modified CI and Modulation Order Replacement for Enhancing OFDM-IM Performance," in IEEE Journal of Selected Topics in Signal Processing, vol. 13, no. 6, pp. 1286-1300, Oct. 2019.[2] S. Banerjee and K. Giridhar, "A Novel Method for Non-Stationary CFO Estimation and Tracking in Inter-UAV OFDM Links," IEEE 90th Vehicular Technology Conference (VTC-Fall), Honolulu (Hawaii), pp. 1-5, Sep. 2019.

## 2018

[1] S. Parthasarathy, S. Kumar, R. K. Ganti, S. Kalyani and K. Giridhar, "Error Vector Magnitude Analysis in Generalized Fading With Co-Channel Interference," in IEEE Transactions on Communications, vol. 66, no. 1, pp. 345-354, Jan. 2018.[2] S. A. Nambi and K. Giridhar, "Lower Order Modulation Aided BER Reduction in OFDM With Index Modulation," in IEEE Communications Letters, vol. 22, no. 8, pp. 1596-1599, Aug. 2018.

## 2017

[1] P. Sriram, V. V. Kumar, A. B. Ayyar and K. Giridhar, "On Improving the BLER for ML Receivers in Block Faded Channels through Random Phase Rotation," 2017 IEEE Wireless Communications and Networking Conference (WCNC), San Francisco, CA, 2017, pp. 1-6.[2] V. Gupta, A.Pradeep, M.Krishna, C.Muthulakshmi, C.A.Kaushik, C.R.Venkatesh and K. Giridhar, "Ultra-Reliable PPDR Broadcast using Licensed Simultaneously Shared Access networks," 2017 IEEE International Conference on Communications Workshops (ICC Workshops), Paris, 2017, pp. 534-539.

[3] S. Banerjee, K. Madan, C. R. Venkatesh and K. Giridhar "Downlink Preamble Design for Accurate Timing Synchronisation in Ultra-Dense Cellular Networks, " Wireless World Research Forum (WWRF-39), Barcelona, Spain, Oct. 2017.

## 2016

[1] V. A. Thomas, S. Kumar, S. Kalyani, M. El-Hajjar, K. Giridhar and L. Hanzo, "Error Vector Magnitude Analysis of Fading SIMO Channels Relying on MRC Reception," in IEEE Transactions on Communications, vol. 64, no. 4, pp. 1786-1797, April 2016.[2] S. V. Ramanan and K. Giridhar, "On the Dependence Between User Detection and Timing Advancement in LTE Ranging Channels," in IEEE Communications Letters, vol. 20, no. 7, pp. 1481-1484, July 2016.

[3] S. Kumar, S. Kalyani and K. Giridhar, "Impact of Sub-Band Correlation on SFR and Comparison of FFR and SFR," in IEEE Transactions on Wireless Communications, vol. 15, no. 8, pp. 5156-5166, Aug. 2016.

[4] G. Raina, S. Manjunath, S. Prasad and K. Giridhar, "Stability and Performance Analysis of Compound TCP With REM and Drop-Tail Queue Management," in IEEE/ACM Transactions on Networking, vol.24, no. 4, pp. 1961-1974, Aug. 2016.

[5] S. K. Pulliyakode, S. Kalyani, L. Hanzo and K. Giridhar, "Predicting the Affordable Rate in Interference-Limited Cellular Systems Using Higher-Order Markov Models," in IEEE Access, vol. 4, pp. 4730-4748, 2016.

[6]S. Gupta, S. Kumar, R. Zhang, S. Kalyani, K. Giridhar and L. Hanzo, "Resource Allocation for D2D Links in the FFR and SFR Aided Cellular Downlink," in IEEE Transactions on Communications, vol. 64, no. 10, pp. 4434-4448, Oct. 2016.

[7] V. Oc, V. Kumar, M. Madhusoodanan and K. Giridhar, "Joint Uplink LLR Computation, Quantization, and Combining for Load-Balanced Small Cells," 2016 IEEE Global Communications Conference (GLOBECOM), Washington, DC, 2016, pp. 1-6.

[8] S. V. Ramanan, C. R. Venkatesh and K. Giridhar, "Effective ranging techniques in LTE," 2016 Twenty Second National Conference on Communication (NCC), Guwahati, 2016, pp. 1-6.

[9] C. R. Venkatesh, S. Kumar, and K. Giridhar, "Multi Operator Simultaneously Shared Synchronised Air Interface for Communications (MOSSSAIC)," Wireless World Research Forum (WWRF-37), Kassel, Germany, Oct. 2016.

[10]O. C. Vishnu, V. V. Kumar, and K. Giridhar, "Robust Multiuser Detection for Co-ordinated Communications in UHF Band," in Wireless World Research Forum (WWRF-36), Beijing, May 2016

[11]V. V. Kumar and K. Giridhar, "Power Efficient Communications for Joint Detection Receivers in Rician Channels," in Wireless Telecommunications Symposium (WTS-2016), London, Apr. 2016.

## Till 2015

[1] S. Kumar, S. Kalyani and K. Giridhar, "Spectrum Allocation for ICIC-Based Picocell," in IEEE Transactions on Vehicular Technology, vol. 64, no. 8, pp. 3494-3504, Aug. 2015.[2] S. Kumar, S. Kalyani and K. Giridhar, "Optimal design parameters for coverage probability in fractional frequency reuse and soft frequency reuse," in IET Communications, vol. 9, no. 10, pp. 1324-1331, 2 7 2015.

[3] S. Kumar, S. Kalyani, L. Hanzo and K. Giridhar, "Coverage Probability and Achievable Rate Analysis of FFR-Aided Multi-User OFDM-Based MIMO and SIMO Systems," in IEEE Transactions on Communications, vol. 63, no. 10, pp. 3869-3881, Oct. 2015.

[4] I. Singh, S. Kalyani and K. Giridhar, "A Practical Compressed Sensing Approach for Channel Estimation in OFDM Systems," in IEEE Communications Letters, vol. 19, no. 12, pp. 2146-2149, Dec. 2015. [5] I. Singh and K. Giridhar, "Enhancement in Spectral Efficiency using Transmit-side Channel Shortener for MISO-OFDM Systems," in IEEE Signal Processing Letters, vol. 21, no. 6, pp. 712-716, June 2014.

[6] M. I. Kadir, S. Chen, K. Hari, K. Giridhar and L. Hanzo, "OFDM-Aided Differential Space–Time Shift Keying Using Iterative Soft Multiple-Symbol Differential Sphere Decoding," in IEEE Transactions on Vehicular Technology, vol. 63, no. 8, pp. 4102-4108, Oct. 2014.

[7] B. Dhivagar, K. Kuchi and K. Giridhar, "An Iterative DFE Receiver for MIMO SC-FDMA Uplink," in IEEE Communications Letters, vol. 18, no. 12, pp. 2141-2144, Dec. 2014.

[8] I. Singh and K. Giridhar, "New results on perfect channel shortening schemes for MIMO-OFDM systems" in Transactions on Emerging Telecommunications Technologies, 26, 2014.

[9] S. Kumar, R. K. Ganti and K. Giridhar, "Frequency planning for cellular network employing carrier aggregation," 2014 Twentieth National Conference on Communications (NCC), Kanpur, 2014, pp. 1-5.

[10] S. Kalyani, R. Lakshminarayanan and K. Giridhar, "Biased estimators with adaptive shrinkage targets for orthogonal frequency division multiple access channel estimation," in IET Communications, vol. 7, no. 1, pp. 13-22, 4 Jan. 2013.

[11] B. H. Ram, W. Li, A. Ayyar, J. Lilleberg and K. Giridhar, "Precoder Design for K-User Interference Channels with Finite Alphabet Signals," in IEEE Communications Letters, vol. 17, no. 4, pp. 681-684, April 2013.

[12] I. Singh and K. Giridhar, "Interference mitigation using channel shortening pre-filter for SIMO-OFDM systems," 2013 IEEE 14th Workshop on Signal Processing Advances in Wireless Communications (SPAWC), Darmstadt, 2013, pp. 320-324.

[13] T. Gopi Krishna, I. Singh and K. Giridhar, "Null-space of block convolution matrix," 2013 National Conference on Communications (NCC), New Delhi, India, 2013, pp. 1-5.

[14] A. Ayyar, H. R. Balakrishnan, A. Thangaraj, V. Nagarajan and K. Giridhar, "Block Modulation for Interference Management in Heterogeneous Wireless Networks," in IEEE Journal of Selected Topics in Signal Processing, vol. 6, no. 3, pp. 241-256, June 2012.

[15] S. Kumar and K. Giridhar, "Analytical derivation of reuse pattern for soft frequency reuse based femtocell deployment," The 15th International Symposium on Wireless Personal Multimedia Communications, Taipei, 2012, pp. 569-573.

[16] R. Kulkarni, R. Padmanabhan, K. M. Sivalingam, D. Jalihal and K. Giridhar, "WiMAX Mesh Based Back-Haul For Tactical Military And Disaster Area Networks," 2012 Fourth International Conference on Communication Systems and Networks (COMSNETS 2012), Bangalore, 2012, pp. 1-10.

[17] N James, SS Rajeshwari, D Jalihal and K Giridhar, "Joint precoding for two way AF MIMO relays in frequency selective OFDM channels", The 15th International Symposium on Wireless Personal Multimedia, 2012.

[18] B. H. Ram, A. Ayyar and K. Giridhar, "Capacity improvement for finite-input constellation using unitary precoding for two user channels," 2012 National Conference on Communications (NCC), Kharagpur, 2012, pp. 1-5.

[19] R. Zhang, K. Giridhar and L. Hanzo, "Distributed downlink Multi-Cell Processing requiring reduced-rate back-haul data exchange," 2011 IEEE Wireless Communications and Networking Conference, Cancun, Quintana Roo, 2011, pp. 1277-1281.

[20] I. Singh, N. K. Vinay and K. Giridhar, "Symbol-by-symbol adaptive null-space exploiting (SANE) channel truncation for fading OFDM channels," 2011 The 14th International Symposium on Wireless Personal Multimedia Communications (WPMC), Brest, 2011, pp. 1-5.

[21] A. Thakre, M. Haardt, F. Roemer and K. Giridhar, "Tensor-Based Spatial Smoothing (TB-SS) Using Multiple Snapshots," in IEEE Transactions on Signal Processing, vol. 58, no. 5, pp. 2715-2728, May 2010.

[22] K. Sakamoto, O. Muta, Y. Akaiwa, K. Giridhar and H. Furukawa, "Adaptive channel assignment and pilot-less channel tracking method for OFDMA systems," 2010 4th International Conference on Signal Processing and Communication Systems, Gold Coast, QLD, 2010, pp. 1-6.

[23] I. Singh and K. Giridhar, "Null-space Exploiting channel shortening prefilter (NE-CSP) for MIMO-OFDM," 2010 National Conference On Communications (NCC), Chennai, 2010, pp. 1-5.

[24] R. Lakshminarayanan and K. Giridhar, "Mean square robustness of linear game theoretic estimators," 2010 National Conference On Communications (NCC), Chennai, 2010, pp. 1-5.

[25] S. Ghosal, D. Jalihal and K. Giridhar, "A multicarrier CDMA based low probability of intercept network," 2010 National Conference On Communications (NCC), Chennai, 2010, pp. 1-5.

[26] N. Vinoth, A. Ayyar, B. Ramamurthi and K. Giridhar, "Robust LLR aided low feedback precoding for interference alignment," 2010 National Conference On Communications (NCC), Chennai, 2010, pp. 1-5.

[27] K. V. Srinivas, K. Giridhar and R. D. Koilpillai, "Orthogonal decode and forward relaying with improved spectral efficiency," in IEEE Communications Letters, vol. 13, no. 2, pp. 109-111, February 2009.

[28] A. Thakre, M. Haardt and K. Giridhar, "Single Snapshot Spatial Smoothing With Improved Effective Array Aperture," in IEEE Signal Processing Letters, vol. 16, no. 6, pp. 505-508, June 2009.

[29]M. R. Raghavendra, S. Bhashyam and K. Giridhar, "Interference Rejection for Parametric Channel Estimation in Reuse-1 Cellular OFDM Systems," in IEEE Transactions on Vehicular Technology, vol. 58, no. 8, pp. 4342-4352, Oct. 2009.

[30] K. V. Srinivas, R. D. Koilpillai, S. Bhashyam and K. Giridhar, "Co-ordinate interleaved spatial multiplexing with channel state information," in IEEE Transactions on Wireless Communications, vol. 8, no. 6, pp. 2755-2762, June 2009.

[31] A. Thakre and K. Giridhar, "2-D normalized frequency estimation using 4-way tensor processing," 2009 IEEE 20th International Symposium on Personal, Indoor and Mobile Radio Communications, Tokyo, 2009, pp. 2817-2821.

[32] A. Thakre, M. Haardt and K. Giridhar, "Single Snapshot R-D Unitary Tensor-ESPRIT Using an Augmentation of the Tensor Order," 2009 3rd IEEE International Workshop on Computational Advances in Multi-Sensor Adaptive Processing (CAMSAP), Aruba, Dutch Antilles, 2009, pp. 81-84.

[33] S. Kalyani and K. Giridhar, "Low Complexity Decision Directed Channel Tracking for High Mobility OFDM Systems," 2009 IEEE International Conference on Communications, Dresden, 2009, pp. 1-5.

[34] A. Ayyar, M. Lentmaier, K. Giridhar and G. Fettweis, "Robust initial LLRs for iterative decoders in presence of non-Gaussian noise," 2009 IEEE International Symposium on Information Theory, Seoul, 2009, pp. 904-908.

[35] K. Kuchi et al., "Interference Mitigation Using Conjugate Data Repetition," 2009 IEEE International Conference on Communications, Dresden, 2009, pp. 1-5.

[36] K. V. Srinivas, R. D. Koilpillai, and K. Giridhar, "Co-ordinate interleaved precoding for block transmission over ISI channels," Proc. of the Thirteenth National Conf. on Communications, (Kanpur), pp. 419-423, Jan. 2007.

[37] K. V. Srinivas, R. D. Koilpillai, and K. Giridhar, "Co-ordinate Interleaving over Parallel Gaussian Channels," Poster presentation in on-going research session at WISARD Conf., (Bangalore), Jan. 2007.

[38] K. V. Srinivas, R. D. Koilpillai and K. Giridhar, "Diversity Multiplexing Gain Tradeoff of Co-Ordinate Interleaved Spatial Multiplexing," VTC Spring 2008 - IEEE Vehicular Technology Conference, Singapore, 2008, pp. 1473-1477.

[39] S. Kalyani and K. Giridhar, "Interference Mitigation in Turbo-Coded OFDM Systems using Robust Statistics," VTC Spring 2008 - IEEE Vehicular Technology Conference, Singapore, 2008, pp. 1191-1195.

[40] S. Kalyani and K. Giridhar, "Interference Mitigation in Turbo-Coded OFDM Systems Using Robust LLRs," 2008 IEEE International Conference on Communications, Beijing, 2008, pp. 646-651.

[41] K. V. Srinivas, K. Giridhar and R. D. Koilpillai, "A New Diagonally Layered Spatial Multiplexing Scheme with Partial Channel Knowledge," IEEE GLOBECOM 2008 - 2008 IEEE Global Telecommunications Conference, New Orleans, LO, 2008, pp. 1-5.

[42] R. Prasad and K. Giridhar, "Robust Channel Tracking in Fast Fading MIMO channels," IEEE GLOBECOM 2008 - 2008 IEEE Global Telecommunications Conference, New Orleans, LO, 2008, pp. 1-5.

[43] S. Kalyani, and K. Giridhar, "Mitigation of error propagation in decision directed OFDM channel tracking using generalized M estimators," IEEE Trans. on Signal Processing, vol.55, no.5, pp.1659-1672, May 2007.

[44] M. R. Raghavendra, E. Lior, S. Bhashyam, and K. Giridhar, "Parametric channel estimation for pseudo-random tile-allocation in uplink OFDMA," IEEE Trans. on Signal Processing, Nov. 2007.

[45] S. Kalyani, and K. Giridhar, "Analysis of OFDM Channel Estimation in the Presence of NBI and the Effect of Misspecified NBI Model ," IEEE Workshop on Signal Processing Advances in Wireless Communication, Jan. 2007.

[46] S. Kalyani, and K. Giridhar, "Robust statistics based expectation-maximization algorithm for channel tracking in mobile OFDM systems," IEEE Wireless Communications Letters, Mar. 2007.

[47] S. Kalyani, and K. Giridhar, "OFDM channel estimation in the presence of narrowband interference using redescending M estimators," IEEE Trans. on Signal Processing, Apr. 2007.

[48] Y. Bhargava, and K. Giridhar, "Efficient synchronisation and frequency tracking for cellular reuse-1 OFDMA systems," IETE Journal of Research (accepted for publication), May 2007.

[49] R. Shende, and K. Giridhar, "Novel frequency and time domain method for efficient uplink ranging in cellular OFDMA, " IETE Journal of Research (accepted for publication), May 2007.

[50] M. R. Raghavendra, S. Bhashyam, and K. Giridhar, "Interference rejection for reuse-1 cellular {OFDM} systems using parametric channel estimation," IEEE Transactions on Vehicular Technology, March 2009.

[51] J. Jose, S. Kalyani, and K. Giridhar, "Impulsive interference cancellation in uplink macro-diversity combining," Proc. of IEEE Intl. Conf. on Wireless Communications and Networking (WCNC 2007), (Hong Kong, China), March 2007.

[52] R. Lakshminarayanan, and K. Giridhar, "Hinf channel estimation for cellular OFDM," Proc. of IEEE Intl. Conf. on Wireless Communications and Networking (WCNC 2007), (Hong Kong, China), March 2007.

[53] Y. Bhargava, and K. Giridhar, "Efficient synchronization and frequency tracking for cellular reuse-1 OFDMA systems," Proc. of IEEE Intl. Conf. on Wireless Communications and Networking (WCNC 2007), (Hong Kong, China), March 2007.

[54] K. V. Srinivas, K. Giridhar, and R. D. Koilpillai, "Co-ordinate interleaving over parallel Gaussian channels," Proc. of the 41st Conference on Information Sciences and Systems (CISS-07), (Baltimore, MD, USA), March 2007.

[55] N. Sridhar, and K. Giridhar, "Robust synchronization algorithms for OFDMA based wireless MAN system," 14th IEEE Intl. Conf. on Telecommunications and 8th IEEE Malaysia Intl. Conf. on Communications," {Penang, Malaysia, May 2007.

[56] M. R. Raghavendra, S. Bhashyam, and K. Giridhar, "Parametric channel estimation in reuse-1 OFDM systems," Proc. of IEEE Intl. Conf. on Communications (ICC 2007), (Glasgow, Scotland, UK), June 2007.

[57] S. Kalyani, V. Raj, and K. Giridhar, "Narrowband interference mitigation in turbo-coded OFDM systems," Proc. of IEEE Intl. Conf. on Communications (ICC 2007), (Glasgow, Scotland, UK), June 2007.

[58] S. Kalyani, and K. Giridhar,"Robust statistics based expectation maximization algorithm for channel tracking in OFDM systems," Proc. of IEEE Intl. Conf. on Communications (ICC 2007), (Glasgow, Scotland, UK), June 2007.

[59] S. Kalyani, and K. Giridhar, "OFDM channel estimation in the presence of NBI and the effect of misspecified NBI model," Proc. of the 8th IEEE Intl. Workshop on Signal Processing Advances for Wireless Communications (SPAWC 2007), (Helsinki, Finland), June 2007.

[60] E. Lior, M. R. Raghavendra, S. Bhashyam, R. Bercovich, and K. Giridhar, "Parametric channel estimation for pseudo-random user allocation in uplink OFDMA," Proc. of the 8th IEEE Intl. Workshop on Signal Processing Advances for Wireless Communications (SPAWC 2007), (Helsinki, Finland), June 2007.

[61] G. Wodajo, and K. Giridhar, "Spatial multiplexing and space-time block coding with limited phase feedback at the transmitter," presented to Working Group 4 of the 18th Meeting of Wireless World Research Forum (WWRF-18), (Espoo, Finland), June 2007.

[62] S. Kalyani and K. Giridhar, "MSE analysis of the iteratively reweighted least squares algorithm when applied to M estimators," accepted for IEEE Globecom 2007 (Washington DC), Nov.2007.

[63] K. V. Srinivas, R. D. Koilpillai, and K. Giridhar, "Co-ordinate interleaved precoding for block transmission over ISI channels," Proc. of the Thirteenth National Conf. on Communications, (Kanpur), pp. 419-423, Jan. 2007.

[64] K. V. Srinivas, R. D. Koilpillai, and K. Giridhar, "Co-ordinate Interleaving over Parallel Gaussian Channels," Poster presentation in on-going research session at WISARD Conf., (Bangalore), Jan. 2007.

[65] J. K. Milleth, K. Giridhar, and D. Jalihal, "On channel orthogonalization using space-time block coding with partial feedback," IEEE Trans. on Communications, vol.54, no.6, pp.1121--1130, June 2006.

[66] H. Ramachandran, K. Giridhar, A. Jhunjhunwala, and M. Subramaniam, "Convergence and India -- The TeNeT group perspective, " IETE Technical Review (Special Issue on Convergence), vol.23,no.4, pp.221-230, July-Aug.2006.

[67] N. Balachander, A. G. Sarvesha, B. Ramamurthi, and K. Giridhar, "A simplified distributed co-operative scheduling scheme for multi-cell OFDM systems," presented to Working Group 4 of the 16th Meeting of Wireless World Research Forum (WWRF-16), (Shanghai, China), Apr. 2006.

[68] S. Kalyani, and K. Giridhar, "Extreme value theory based decision directed OFDM channel tracking," Proc. of IEEE Intl. Conf. on Communications (ICC-2006), (Istanbul, Turkey), June 2006.

[69] S. Kalyani, and K. Giridhar, "Leverage weighted decision directed channel tracking for OFDM systems," Proc. of IEEE Intl. Conf. on Communications (ICC-2006), (Istanbul, Turkey), June 2006.

[70] L. Eldar, M. R. Raghavendra, R. Bercovich, S. Bhashyam, and K. Giridhar, "Parametric channel estimation for pseudo-random user-allocation in uplink OFDMA," Proc. of IEEE Intl. Conf. on Communications (ICC-2006), (Istanbul, Turkey), June 2006.

[71] K. V. Srinivas, J. K. Milleth, R. D. Koilpillai, and K. Giridhar, "Co-ordinate interleaved spatial multiplexing with channel knowledge at transmitter and receiver," Proc. of IEEE Intl. Conf. on Signal Processing (ICASSP-2006), (Toulouse, France), May 2006.

[72] S. Kalyani, and K. Giridhar,"Extreme value theory based OFDM channel estimation in the presence of narrowband interference," Proc. of IEEE Global Communications Conf. (Globecom-06), (San Francisco, CA, USA), Nov. 2006.

[73] Y. Bhargava and K. Giridhar, "Efficient frequency offset estimation and tracking for reuse-1 OFDMA systems," Proc. of IEEE Intl. Conf. on Telecommunications and Networks (TENCON 2006), IEEE region 10 conference, (Hong Kong, China), Nov 2006.

[74] V. Ganesh, D. Jalihal, K. Giridhar, "Optimal power allocation for MISO channels with PAPR constraints and its performance with quantised channel feedback," presented to Working Group 4 of the 17th Meeting of Wireless World Research Forum (WWRF-17), (Heidelberg, Germany), Nov. 2006.

[75] K. V. Srinivas, R. D. Koilpillai, and K. Giridhar, "Enhanced closed loop spatial multiplexing with linear decoding for wireless LAN and MAN," 1st Forum meeting of Indo-Japan Colloboration Project on Infrastructural Communication Technologies, (Tokyo, Japan), Dec., 2006.

[76] M. R. Raghavendra, and K. Giridhar, "Improving channel estimation in OFDM systems for sparse multipath channels," IEEE Signal Processing Letters, vol. 12, no.1, pp. 52--55, Jan.2005.

[77] J. K. Milleth, K. Giridhar, and D. Jalihal, "Closed loop transmit diversity schemes for five and six transmit antennas," IEEE Signal Processing Letters, vol. 12, no.2, pp. 130--133, Feb. 2005.

[78] R. Sumanth, and K. Giridhar, "Studying the effects of delay-spread diversity on the {DS-CDMA} downlink," IETE Journal of Research, vol. 51,no. 1, pp. 49--60, Jan.- Feb 2005.

[79] J. K. Milleth, K. Giridhar, and D. Jalihal, "Open-loop and closed-loop transmit diversity techniques - Overview and new results," IETE Journal of Research, vol. 51,no. 3, pp. 223--234, May-June 2005.

[80] G. V. Rangaraj, D. Jalihal, and K. Giridhar, "Exploiting multipath diversity in multiple antenna OFDM systems with spatially correlated channels," IEEE Trans. on Vehicular Technology, vol. 54, no. 4, pp. 1372--1378, July 2005.

[81] J. K. Milleth, K. Giridhar, and D. Jalihal, "Performance enhancement of space-time trellis codes when encountering AWGN and Ricean channels," IEEE Trans. on Vehicular Technology,vol. 54, no. 4, pp. 1352-1360, July 2005.

[82] J. K. Milleth, K. Giridhar, and D. Jalihal, "Pre-processed space- time trellis codes with one-bit feedback," IEEE Communication Letters, vol.9, no.8, pp. 703--705, Aug. 2005.

[83] M. R. Raghavendra, S. Bhashyam, and K. Giridhar, "Exploiting hopping pilots for parametric channel estimation in OFDM systems," IEEE Signal Processing Letters, vol. 12, no.10, pp.737--740, Oct. 2005.

[84] J. K. Milleth, K. Giridhar, and D. Jalihal, "Transmit diversity schemes for channel orthogonalization using low bit-rate feedback," presented to Working Group 4 of Thirteenth World Wireless Forum (WWRF-13), (Jeju Island, Korea), Mar. 2005.

[85] G. V. Rangaraj, D. Jalihal, and K. Giridhar, "Exploiting multipath diversity using space-frequency linear dispersion codes in MIMO-OFDM Systems," Proc. of IEEE Intl. Conf. on Communications (ICC-2005), (Seoul, Korea), June 2005.

[86] R. Ganti, K. V. Srinivas, and K. Giridhar, "Criterion for an STBC to achieve optimal spatial multiplexing gain diversity tradeoff over QAM constellations," accepted for presentation at Canadian Workshop on Information Theory (CWIT-2005), (Montreal, Canada) June 2005.

[87] K. V. Srinivas, J. K. Milleth, K. Giridhar, and R. D. Koilpillai, "Low complexity spatial multiplexing scheme over correlated channels using feedback," presented to Working Group 4 of the 15th Meeting of Wireless World Research Forum (WWRF-15), (Paris, France), Dec. 2005.

[88] V. B. J. James, B. Ramamurthi, and K. Giridhar,"Controlling array gain using partial channel feedback in linearly decodable STF codes," presented to Working Group 4 of 15th Meeting of Wireless World Research Forum (WWRF-15), (Paris, France), Dec. 2005.

[89] M.Nagarajan, A. Jhunjhunwala, and K. Giridhar, "Reserved carrier and opportunistic frequency reuse to enable adhoc 802.11b mesh network for rural connectivity", Proc. of the Eleventh National Conf. on Communications, (Kharagpur), pp. , Jan. 2005.

[90] G. V. Rangaraj, D. Jalihal, and K. Giridhar, "On usefulness of multipath diversity for multiple antenna OFDM systems," IETE Technical Review, vol.21, no.5, pp. 317--324, Sept.-Oct. 2004.

[91] G. V. Rangaraj, D. Jalihal, and K. Giridhar, "On OFDM systems With spatially correlated antennas in low multipath diversity situations," IEEE Signal Processing Letters, vol. 11, no.12, pp. 945--947, Dec. 2004.

[92] M. R. Raghavendra, S. Bhashyam, and K. Giridhar, "Improving channel estimation in OFDM systems for sparse multipath channels," Proc. of IEEE Signal Processing Advances in Wireless Communications (SPAWC-04), (Lisbon, Portugal), July 2004.

[93] S. Kalyani, and K. Giridhar, "Spectrally weighted frequency domain equalizer for mobile OFDM," Proc. of IEEE Signal Processing Advances in Wireless Communications (SPAWC-04), (Lisbon, Portugal), July 2004.

[94] K. Giridhar, "On channel estimation and tracking for MIMO OFDM in fast fading channels," Proc. of the Ninth Stanford Univ. Smart Antennas Workshop, (Stanford, CA, USA), July 2004. Invited Talk.

[95] S. Kalyani, and K. Giridhar, "Iterative error weighted frequency domain tracking for mobile OFDM," Proc. of 9th International OFDM-Workshop, pp., (Dresden, Germany), Sept. 2004.

[96] M. R. Raghavendra, S. Bhashyam, and K. Giridhar, "Fast multipath delay estimation in OFDM systems using frequency swept pilots", Proc. of 9th International OFDM- Workshop, pp. 237-240, (Dresden, Germany), Sept. 2004.

[97] S. Kalyani, and K. Giridhar, "Quantised decision based gradient descent algorithm for fast fading OFDM channels," Proc. of IEEE Vehicular Technology Conference (VTC-04), (Los Angeles, CA, USA), Sept. 2004.

[98] S. Kalyani, and K. Giridhar, "Frequency domain variable step-size {LMS} algorithm for fast fading {OFDM} channels ," Proc. of the Tenth National Conf. on Communications, (Bangalore), pp. 10-14, Jan. 2004.

[99] J. Klutto Milleth, K. Giridhar, and D. Jalihal "New space-time block codes with full rate," Proc. of the Tenth National Conf. on Communications, (Bangalore), pp. 229-233, Jan. 2004.

[100] M. R. Raghavendra, and K. Giridhar, "Least squares stabilisation using {SVD} for {OFDM} equaliser in large delay spread channels," Proc. of the Tenth National Conf. on Communications, (Bangalore), pp. 192-196, Jan. 2004.

[101] N. Balamurali, D. Jalihal, and K. Giridhar, "{EKF} algorithm for combined carrier and sampling offset tracking in {OFDM} {WLAN} systems," Proc. of the Tenth National Conf. on Communications, (Bangalore), pp. 1-5, Jan. 2004.

[102] R. Rajendran, and K. Giridhar, "{RAKE/DFE} algorithm with block decoding for 802.11b {WLAN}," Proc. of the Tenth National Conf. on Communications, (Bangalore), pp. 152-156, Jan. 2004.

[103] J. K. Milleth, K. Giridhar, and D. Jalihal,"Performance of transmit diversity scheme with quantized phase-only feedback, " Proceedings of IEEE Signal Processing and Communications Conference (SPCOM'04), Bangalore, Dec. 2004.

[104] R. Ramya, and K. Giridhar, "Spatial multiplexing for {MIMO} wireless channels -- Overview and new results," IETE Journal of Research, vol. 49,no. 5, pp. 345-351, Sept.- Oct. 2003.

[105] V. V. Krishna, J. V. Avadhanulu, K. Giridhar, and A. Paulraj, "Eigenstructure methods for direction-of-arrival estimation of frequency hopped (FH) emitters," in Proc. of the IEEE Military Communications Conf., (Pacific Grove, CA, USA), pp. 1133--1137, Oct. 1990.

[106] G. V. Rangaraj, M. Raghavendra, and K. Giridhar "Improved channel estimation for {OFDM} based {WLAN} systems, in International Conference in Wireless Communication Networks, (Chennai, India), June 2003.

[107] G. V. Rangaraj, K. Giridhar, and D. Jalihal "Exploiting multipath induced diversity in {OFDM} systems," in Ninth IEEE Workshop on Signal Processing Advances in Wireless Communications, (Rome, Italy), June 2003.

[108] N. Sridhar, and K. Giridhar "Timing synchronisation for {OFDM} based wireless {LAN} system," IEEE Region 10 Telecommunications and Networks Conf. on Convergent Technologies for Asia-Pacific (TENCON-2003), (Bangalore, India), Oct. 2003.

[109] J. K. Milleth, K. Giridhar, and D. Jalihal,"Trasmit diversity with phase-only feedback," presented to Working Group 4 of Tenth World Wireless Forum (WWRF- 10), (New York, NY, USA), Oct. 2003.

[110] G. V. Rangaraj, D. Jalihal, and K. Giridhar, "Introducing space sampling for {OFDM} systems with multipath diversity," IEEE Intl. Symposium on Signal Processing and Information Technology (ISSPIT), (Erlangen, Germany), Dec. 2003.

[111] P. C. Vijay, and K. Giridhar, "Adaptive memory control for polynomial {RLS} algorithm in fast fading channels," in Proc. of the Ninth National Conf. on Communications, (Chennai), pp. 120-124, Jan./Feb. 2003.

[112] G. Ramesh Kumar, and K. Giridhar, "{3G DECT} receiver for frequency selective channels," in Proc. of the Ninth National Conf. on Communications, (Chennai), pp. 204-208, Jan./Feb. 2003.

[113] G. V. Rangaraj, K. Giridhar, and D. Jalihal "Exploiting multipath induced diversity in {OFDM} systems," in Proc. of the Ninth National Conf. on Communications, (Chennai), pp. 309-313, Jan./Feb. 2003.

[114] J. K. Milleth, K. Giridhar, and D. Jalihal,"Pre-processed space time trellis codes," in IEEE Information Theory Workshop, (Bangalore, India), Oct. 2002.

[115] J. K. Milleth, K. Giridhar, and D. Jalihal,"Distance optimised space time trellis codes," in IEEE Intl. Conf. on Personal and Wireless Communications, (New Delhi, India), Dec. 2002.

[116] R. Ramya and K. Giridhar, "Non-linear joint detector for spatially multiplexed 64-QAM Signals," in Proc. of the Eigth National Conf. on Communications, (Bombay), pp. 403-407, Jan. 2002.

[117] K. Raja, M. Hariprasad, R. Aravind, and K. Giridhar, "Enhanced receiver algorithms for TDMA PMP wireless system," in Proc. of the Eigth National Conf. on Communications, (Bombay), pp. , Jan. 2002.

[118] M. Ahmed Khan, and K. Giridhar, "Analytical BER Computation for RAKE Receiver in Rayleigh Fading," in Proc. of the Eigth National Conf. on Communications, (Bombay), pp. , Jan. 2002.

[119] G. V. Rangaraj, and K. Giridhar, "Low complexity channel estimation for transmit diversity {OFDM} system," in Proc. of the Eigth National Conf. on Communications, (Bombay), pp. , Jan. 2002.

[120] N. Hithesh, G. Ramesh Kumar, B. Ramamurthi, and K. Giridhar, "Receiver for {3G DECT} physical layer," in Proc. of the Eigth National Conf. on Communications, (Bombay), pp. , Jan. 2002.

[121] P. C. Vijay, and K. Giridhar, "Estimation and tracking of fast frequency selective fading channels with co-channel interference," in Proc. of the Eigth National Conf. on Communications, (Bombay), pp. , Jan. 2002.

[122] K. Vasudevan, K. Giridhar, and B. Ramamurthi, "An efficient suboptimum detector based on linear prediction in Rayleigh flat-fading channels," Signal Processing, vol. 81, pp. 819-828, 2001.

[123] M. Rammohan, and K. Giridhar, "Performance losses in VBLAST due to fading," in Third IEEE Workshop on Signal Processing Advances in Wireless Communications, (Taipei, Taiwan), Mar. 2001.

[124] R. Ramya and K. Giridhar, "Non-coherent Joint Receiver for MIMO Channels," in Proc. of the Seventh National Conf. on Communications, (Kanpur), pp. 8-11, Jan. 2001.

[125] R. Vasudha, B. Ramamurthi, and K. Giridhar, "Lossless data compression for internet access in corDect wireless local loop system," in Proc. of the Seventh National Conf. on Communications, (Kanpur), pp. , Jan. 2001.

[126] V. Madhavi, D. Jalihal, K. Giridhar, and B. Ramamurthi, "High-speed DECT based internet download system," in Proc. of the Seventh National Conf. on Communications, (Kanpur), pp. , Jan. 2001.

[127] A. Jhunjhunwala, D. Jalihal, and K. Giridhar, "Wireless local loop -- some fundmentals," IETE Journal of Research, Special Issue on Wireless Technologies, vol. 46,no. 6, pp. 421-433, Nov.-Dec. 2000.

[128] K. Vasudevan, K. Giridhar, and B. Ramamurthi, "Noncoherent detection of multilevel signals in frequency nonselective fading channels," Signal Processing, vol. 78, pp. 159--176, 1999.

[129] K. Vasudevan, K. Giridhar, and B. Ramamurthi,"Efficient Viterbi algorithm for signals with ISI," IEE Electronics Letters, vol. 34, no.7, pp. 629-631, Apr. 1998.

[130] K. Giridhar, J. J. Shynk, A. Mathur, S. Chari, and R. P. Gooch, "Nonlinear techniques for the joint estimation of cochannel signals," IEEE Trans. on Communications, vol. 45, pp. 473-482, Apr. 1997.

[131] B. Ramamurthi, K. Giridhar, and M. A. Srinivas, "DSP-based digital FM demodulation for GMSK," Sadhana, vol. 21, part 1, Academy Proc. in Engineering Sciences, pp. 103-114, Feb. 1996.

[132] K. Giridhar, J. J. Shynk, R. A. Iltis, and A. Mathur, "Adaptive MAPSD algorithms for the symbol and timing recovery of mobile radio TDMA signals," IEEE Trans. on Communications, vol. 44, pp. 976-987, Aug. 1996.

[133] R. A. Iltis, J. J. Shynk, and K. Giridhar, "Bayesian algorithms for blind equalization using parallel adaptive filtering," IEEE Trans. on Communications, vol. 42, pp. 1017-- 1032, Feb/Mar/Apr. 1994.

[134] K. Giridhar, J. J. Shynk, and R. A. Iltis, "Bayesian/decision feedback algorithm for blind adaptive equalization," Optical Engineering, vol. 31, pp. 1211--1223, June 1992.

[135] K. Ravi Sankar, and K. Giridhar, "Modified hybrid decision feedback equalizer for wireless communications," in Intl. Conf. on Multimedia Processing and Systems, (Madras, India), Aug. 2000.

[136] P. C. Vijay, and K. Giridhar, "Error bounds for joint MLSE based co-channel signal recovery," in Intl. Conf. on Communications, Control, and Signal Processing in the Next Millennium, (Bangalore, India), July. 2000.

[137] K. Vasudevan, K. Giridhar, and B. Ramamurthi, "Efficient suboptimum detectors based on linear prediction in Rayleigh flat-fading channels," in Intl. Conf. on Communications, Control, and Signal Processing in the Next Millennium, (Bangalore, India), July. 2000.

[138] D. Jalihal, K. Giridhar, and B. Ramamurthi, "corDECT based packet radio services," in Intl. Conf. on Affordable Telecom and IT Solutions for Developing Countries (COMMSPHERE-2000), (Madras, India), Mar. 2000.

[139] I. Anand, V. Venkatasubramanian, D. Jalihal, and K. Giridhar, "Near-optimal low complexity joint estimation of cochannel ISI signals for mobile receivers," in IEEE Vehicular Technology Conf., (Houston, TX, USA), June 1999.

[140] K. Vasudevan, K. Giridhar, and B. Ramamurthi, "Differential detection of multilevel signals in frequency nonselective Rayleigh fading channels with diversity," in Proc. of the IEEE International Conf. on Personal Wireless Communications, (Jaipur, India), pp. 188--192, Feb. 1999.

[141] K. Vasudevan, K. Giridhar, and B. Ramamurthi,"DSP-based non- coherent detectors for multilevel signals in flat fading channels," in Proc. of the IEEE Intl. Conf. on Universal Personal Communications," (Florence, Italy), pp. 1313-1318, Oct. 1998.

[142] A. Mathur, J. J. Shynk, and K. Giridhar, "A dual-mode adaptive algorithm for symbol recovery over Rayleigh fading TDMA mobile radio channels," in Proc. of the 28th Asilomar Conf. on Signals, Systems, Computers, (Pacific Grove, CA, USA), Nov. 1994.

[143] K. Giridhar, A. Mathur, and J. J. Shynk, "A blind-adaptive MAP algorithm for the recovery of co-channel signals," in Proc. of the IEEE Military Communications Conf., (Fort Monmouth, NJ,USA), pp. 133-138, Oct. 1994.

[144] K. Giridhar, S. Chari, J. J. Shynk, R. P. Gooch, and D. J. Artman, "Joint estimation algorithms for cochannel signal demodulation," in Proc. of the IEEE Intl. Conf. on Communications, (Geneva, Switzerland), pp. 1497-1501, May 1993.

[145] K. Giridhar, J. J. Shynk, and R. A. Iltis, "Reduced complexity MAPSD algorithms with spatial diversity for TDMA mobile radio signal recovery," in Proc. of the IEEE Intl. Conf. on Communications, (Geneva, Switzerland), pp. 1134-1138, May 1993.

[146] K. Giridhar, S. Chari, J. J. Shynk, and R. P. Gooch, "Joint demodulation of cochannel signals using {MLSE} and {MAPSD} algorithms," in Proc. of the IEEE Intl. Conf. on Acoustics, Speech and Signal Processing, (Minneapolis, MN, USA), vol. IV, pp. 160-163, April 1993.

[147] K. Giridhar, S. Chari, J. J. Shynk, and R. P. Gooch, "Joint demodulation of cochannel signals using {MLSE} and {MAPSD} algorithms," in Proc. of the IEEE Intl. Conf. on Acoustics, Speech and Signal Processing, (Minneapolis, MN, USA), vol. IV, pp. 160-163, April 1993.

[148] K. Giridhar, J. J. Shynk, and R. A. Iltis, "Fast dual-mode adaptive algorithms for the equalization and timing recovery of mobile radio {TDMA} signals," in Proc. of the 26th Asilomar Conf. on Signals, Systems, and Computers, (Pacific Grove, CA, USA), pp. 339--345, Nov. 1992.

[149] R. A. Iltis, J. J. Shynk, and K. Giridhar, "Bayesian blind equalization for coded waveforms," in Proc. of the IEEE Military Communications Conf., (San Diego, CA, USA), pp. 211--215, Oct. 1992.

[150] K. Giridhar, J. J. Shynk, and R. A. Iltis, "A modified Bayesian algorithm with decision feedback for blind adaptive equalization," in Proc. of the IFAC Intl. Symposium on Adaptive Systems in Control and Signal Processing, (Grenoble, France), pp. 737-- 742, July 1992.

[151] K. Giridhar and J. J. Shynk, "A perceptron-based adaptive equalizer for PAM signals," in Proc. of the IEEE Intl. Symposium on Circuits and Systems, (San Diego, CA, USA), pp. 1581--1584, May 1992.

[152] R. A. Iltis, J. J. Shynk, and K. Giridhar, "Recursive {B}ayesian algorithms for blind equalization," in Proc. of the 25th Asilomar Conf. on Signals, Systems, Computers, (Pacific Grove, CA, USA), pp. 710--715, Nov. 1991.

[153] J. J. Shynk, R. P. Gooch, K. Giridhar, and C. K. Chan, "A comparative performance study of several blind equalization algorithms," in SPIE Conf. on Adaptive Signal Processing, vol. 1565, (San Diego, CA, USA), pp. 102--117, July 1991.

[154] V. V. Krishna, J. V. Avadhanulu, K. Giridhar, and A. Paulraj, "Eigenstructure methods for direction-of-arrival estimation of frequency hopped (FH) emitters," in Proc. of the IEEE Military Communications Conf., (Pacific Grove, CA, USA), pp. 1133--1137, Oct. 1990.

[155] M. Joseph, D. Jalihal, B. Ramamurthi, and K. Giridhar, "DSP algorithms for a 15-channel on-board satellite transmultiplexer and receiver," in Proc. of Sixth National Conf. on Communications, (New Delhi), pp. 395-398, Feb. 2000.

[156] M. R. Ramesh Kumar and K. Giridhar, "Noncoherent joint recovery of cochannel {TDMA} signals in Rician flat fading channels," in Proc. of Sixth National Conf. on Communications, (New Delhi), pp. 390-394, Feb. 2000.

[157] G. Ravi Srikiran and K. Giridhar, "Channel equalization using a fractionally spaced DFE with unsupervised adaptation," in Proc. of Sixth National Conf. on Communications, (New Delhi), pp. 73-77, Feb. 2000.

[158] K. Vasudevan, K. Giridhar, and B. Ramamurthi, "Noncoherent sequence estimation of multilevel signals in slowly fading channels," in Proc.of the Fourth National Conf. on Communications, (Indian Institute of Science Bangalore, India), pp. 18--23, Jan. 1998.

[159] K. Vasudevan, K. Giridhar, and B. Ramamurthi,"Nyquist-rate detection of CPM signals using the Viterbi algorithm," in Proc. of the Third National Conference on Communications, (Madras), pp. 85-90, Feb. 1997.

[160] K. Vasudevan, K. Giridhar, and B. Ramamurthi,"Split-Trellis Viterbi decoder -- A computationally efficient technique for MLSE," in Proc. of the Second National Conference on Communications, (Bombay), pp. 59-62, Feb. 1996.

## Book Chapters

[1] K. Giridhar, J. J. Shynk, and R. A. Iltis, "Blind adaptive MAP symbol detection and a TDMA digital mobile radio application," in Computer Techniques and Algorithms in Digital Signal Processing , C. T. Leondes, Ed., Control and Dynamic Systems: Advances in Theory and Applications, vol.75, Academic Press, (San Diego, CA), pp. 339-406, 1996.[2] K. Giridhar, J. J. Shynk, and R. A. Iltis, "A modified Bayesian algorithm with decision feedback for blind adaptive equalization," in Adaptive Systems in Control and Signal Processing 1992 , L. Dugard, M. M'Saad, and I. D. Landau, Eds., Oxford Pergamon Press, pp. 511-516, 1993.

## Edited Journals

[1] K. Giridhar, and S. Bhashyam, Eds., "Special Issue on Broadband Wireless Technologies,", IETE Technical Review, vol. 21,no. 5, Sept.-Oct. 2004.[2] A. Jhunjhunwala, and K. Giridhar, Eds., "Special Issue on Wireless Technologies," IETE Journal of Research, vol. 46,no. 6, Nov.-Dec. 2000.

### Dr.K.Giridhar

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Indian Institute of Technology, Madras

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Email: k.giridhar@telwise-research.com

### Administrative Assistant .

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Department of Electrical Engineering

Indian Institute of Technology, Madras

Phone:+91 (44) 2257 5405

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