| PhD Seminar

Name of the Speaker: Mr. Yelamarty Siva Satya Krishna Madan (EE16D206)
Guide: Prof. Giridhar K
Venue: ESB-244 (Seminar Hall)
Online meeting link: https://meet.google.com/hus-uwyh-fkq
Date/Time: 6th February 2024 (Tuesday), 3:00 PM
Title: Design and Development of custom waveforms and Algorithms on COTS Testbed for Reliable and Covert Satellite Communication

Abstract

The primary objective is to design a covert (low probability of interception/detection) point-to-multipoint wireless communication system with a country-wide coverage ability. For such coverage, a geostationary communication satellite transponder acts as a relay (i.e., using the bent pipe principle for amplifying the received signal, frequency translation and forwarding). Adopting generalized multi-carrier schemes with specified correlation properties and low peak-to-average power ratio (PAPR) ensures that the forward and reverse links align with the design specifications of this FDD system. Real-time demonstrations over the COTS (Commercial Off-the-Shelf) platform, which includes FPGA+SDR as each node, validate the efficacy of the waveform choices and receiver algorithms. Even with estimated timing, frequency offset, and channel estimates, a coded block error rate of 10-3 was achieved at -15dB SNR in the presence of 30 other co-channel signals.