DS-CDMA coherent uplink for mobile satellite communications
Giovanni Emanuele Corazza, Riccardo De Gaudenzi · 2002
A pilot-aided coherent up-link transmission scheme is proposed for mobile satellite communications at L-band. The scheme is designed to possess small envelope fluctuations and low complexity. A rigorous analysis is performed for the proposed technique, when used in conjunction with a DS-CDMA, convolutionally encoded BPSK link. The analysis is validated through extensive simulations, which in addition account for non-ideal AFC. The results show a significant performance gain with respect to non-coherent schemes designed for similar links, which goes up to 1.8 dB for slow moving users exploiting dual-satellite diversity.