| MS Seminar

Name of the Speaker: Mr. SANTHOSH KUMAR SR (EE20S050)
Guide: Prof. Ganti Radha Krishnan
Venue: ESB-244 (Seminar Hall)
Date/Time: 7th June 2024 (Friday), 3:00 PM
Title: Designing a MIMO Receiver for Sounding Reference Signal in 5G.

Abstract :

Sounding Reference Signal(SRS) is an uplink physical reference signal in 5G that is transmitted by User Equipments(UEs) to the base station(gNodeB) for estimating the channel and its related parameters like SNR. These parameters aid in the optimal selection of radio resources for the UEs to achieve better throughputs. Accurate estimation of these parameters is essential for choosing the best modulation scheme and code rate for the UEs according to their channel conditions. Assuming channel reciprocity, the estimated channel can be used for computing downlink precoding matrices. SRS is a zadoff-chu sequence interleaved in time and frequency based on parameters like comb pattern and cyclic shift to accommodate multiple UEs. In this thesis, i) FPGA-based implementation of the signal generation part, ii) Extraction of SRS from the Resource Grid, iii) Estimation of channel matrices and iv) Measurement of SNR for all UEs, and v) Hardware complexity of the system are discussed in detail. An SRS receiver is designed for a 5G NR base station with limited hardware resources and is validated for a deployable system at the 5G Testbed, IIT Madras.