Publications
Please click here pdf for a list of recent (2015-16) journal publications and granted patents arising out of our research work. Most of the earlier publications are listed below.
Journals
[1] 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.(pdf)
[2] 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.(pdf)
[3] 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.(pdf)
[4] 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.(pdf)
[5] 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.(pdf)
[6] 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.(pdf)
[7] 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.(pdf)
[8] 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. (pdf)
[9] 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.(pdf)
[10] 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. (pdf)
[11] 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. (pdf)
[12] 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.(pdf)
[13] 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.(pdf)
[14] 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.(pdf)
[15] 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. (pdf)
[16] 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.(pdf)
[17] 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.(pdf)
[18] 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.(pdf)
[19] 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.(pdf)
[20] 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.(pdf)
[21] 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.(pdf)
[22] 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.(pdf)
[23] 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.(pdf)
[24] 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, to appear in Nov. 2007.(pdf)
[25] S. Kalyani, and K. Giridhar, "Analysis of OFDM Channel Estimation in the Presence of NBI and the Effect of Misspecified NBI Model ," submitted for review, IEEE Trans. on Signal Processing, Jan. 2007.(pdf)
[26] S. Kalyani, and K. Giridhar, "Robust statistics based expectation-maximization algorithm for channel tracking in mobile OFDM systems,"submitted for review, IEEE Wireless Communications Letters, Mar. 2007.(pdf)
[27] S. Kalyani, and K. Giridhar, "OFDM channel estimation in the presence of narrowband interference using redescending M estimators," submitted for review, IEEE Trans. on Signal Processing, Apr. 2007.(pdf)
[28] 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.(pdf)
[29] 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.(pdf)
[30] M. R. Raghavendra, S. Bhashyam, and K. Giridhar, "Interference rejection for reuse-1 cellular {OFDM} systems using parametric channel estimation," submitted for review, IEEE JSAC Special Issue on Multiuser Detection for Advanced Communication Systems and Networks, June 2007.(pdf)
Conferences
International Conferences
[1] 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.(pdf)
[2] 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.(pdf)
[3] 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.(pdf)
[4] 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.(pdf)
[5] 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.(pdf)
[6] 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.(pdf)
[7] 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.(pdf)
[8] 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.(pdf)
[9] 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.(pdf)
[10] 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.(pdf)
[11] 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.(pdf)
[12] 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.(pdf)
[13] 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. (pdf)
[14] 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.(pdf)
[15] 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.(pdf)
[16] 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.(pdf)
[17] 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.(pdf)
[18] 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.(pdf)
[19] 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.(pdf)
[20] 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.(pdf)
[21] J. K. Milleth, K. Giridhar, and D. Jalihal,"Pre-processed space time trellis codes," in IEEE Information Theory Workshop, (Bangalore, India), Oct. 2002.(pdf)
[22] 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.(pdf)
[23] 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.(pdf)
[24] 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.(pdf)
[25] 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.(pdf)
[26] 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.(pdf)
[27] 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.(pdf)
[28] 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.(pdf)
[29] 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.(pdf)
[30] 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.(pdf)
[31] 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.(pdf)
[32] 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.(pdf)
[33] 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.(pdf)
[34] 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.(pdf)
[35] 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.(pdf)
[36] 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. (pdf)
[37] 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.(pdf)
[38] 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.(pdf)
[39] 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.(pdf)
[40] 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.(pdf)
[41] 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.(pdf)
[42] 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.(pdf)
[43] 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.(pdf)
[44] 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.
[45] 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.(pdf)
[46] 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.(pdf)
[47] 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.(pdf)
[48] 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.(pdf)
[49] 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.(pdf)
[50] 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.(pdf)
[51] 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.(pdf)
[52] 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.(pdf)
[53] 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.(pdf)
[54] 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.(pdf)
[55] 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.(pdf)
[56] 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. (pdf)
[57] 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.(pdf)
[58] 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.(pdf)
[59] 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.(pdf)
National Conferences
[1] 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.(pdf)
[2] 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.(pdf)
[3] 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.(pdf)
[4] 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.(pdf)
[5] 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.(pdf)
[6] 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.(pdf)
[7] 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.(pdf)
[8] 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.(pdf)
[9] 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.(pdf)
[10] 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.(pdf)
[11] 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.(pdf)
[12] 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.(pdf) (pdf) (pdf)
[13] 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.(pdf)
[14] 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.(pdf)
[15] 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. (pdf)
[16] 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.(pdf)
[17] 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.(pdf)
[18] 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. (pdf)
[19] 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.(pdf)
[20] 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.(pdf)
[21] 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.(pdf)
[22] 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.(pdf)
[23] 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.(pdf)
[24] 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.(pdf) (pdf)
[25] 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.(pdf)
[26] 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.(pdf)
[27] 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.(pdf)
Book Chapters
[1] 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.(pdf)
[2] 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.(pdf)
Edited Journals
[1] A. Jhunjhunwala, and K. Giridhar, Eds., "Special Issue on Wireless Technologies," IETE Journal of Research, vol. 46,no. 6, Nov.-Dec. 2000.
[2] K. Giridhar, and S. Bhashyam, Eds., "Special Issue on Broadband Wireless Technologies,", IETE Technical Review, vol. 21,no. 5, Sept.-Oct. 2004.
Patents
[1] K. Giridhar, et al.,"Method and system for transmitting training information in a block tranmission system," filed in US Patent Office, July 2005, (Santa Clara, CA, USA).
[2] K. Giridhar, et al., "Training information transmission method in a block transmission system," filed in US Patent Office, July 2005, (Santa Clara, CA, USA).
[3] K. Giridhar, et al., "Method and system for performing channel estimation in a multiple antenna block transmission system," filed in US Patent Office, Aug. 2005, (Santa Clara, CA, USA).
[4] K. Giridhar, et al., "Method and system for determining channel response in a block tranmission system,"filed in US Patent Office, July 2006, (Santa Clara, CA, USA).
[5] K. Giridhar, et al., "Method and system for transmitting a frame in a block transmission system and for decoding the frame thereof," filed in US Patent Office, July 2006, (Santa Clara, CA, USA).
[6] K. Giridhar, et al., "Method and system for etimating co-channel interference in a frame of a block transmission system," filed in US Patent Office, July 2006, (Santa Clara, CA, USA).
[7] K. Giridhar, et al., "Method and system for estimating a channel frequency response of a training symbol in a block transmission system," filed in US Patent Office, July 2006, (Santa Clara, CA, USA).