Synchronization of TDMA bursts with short preamble for satellite receiver

Abstract

This paper deals with the baseband digital demodulation of bursty BPSK signals in the presence of frequency, phase and time offset in an Additive White Gaussian Noise (AWGN) impaired narrowband satellite TDMA channel. The receiver perform the tasks of acquiring synchronization in time, frequency and phase, matched filtering, BPSK demodulation and soft decision Viterbi decoding on the received baseband data to obtain the estimate of the transmitted information. The demodulator is developed to work completely in discrete domain and it exhibits good performance even at low SNR. This demodulator is completely implemented on a Digital Signal Processor (DSP) in C programming language.