| PhD Seminar

Name of the Speaker: Mr. Narendra Deconda (EE18D200)
Guide: Prof. David Koilpillpai R
Venue: ESB-244 (Seminar Hall)
Date/Time: 20th September 2024 (Friday), 3:30 PM
Title: Fractionally Spaced Equalizers for OTFS Systems

Abstract :

Orthogonal Time Frequency Space (OTFS) modulation has been shown to provide reliable communication in high Doppler environments. The wireless transmission medium can be represented as a sparse delay-Doppler (DD) channel, and OTFS can be seen as an end-to-end DD domain framework. In this work, we look at Fractionally-spaced Equalizers for OTFS-modulated signals. We propose a Reduced Cyclic Prefix and Reduced Cyclic Suffix (RCP & RCS) redundancy insertion approach at the transmitter that eliminates Inter-frame Interference at the receiver. We modify the existing Maximal Ratio Combining (MRC) with Interference Cancellation (IC) based delay-time (DT) domain Equalization framework to suit our frame structure. Through simulation results, we show improved bit error performance with receiver oversampling.