Performance of cooperative satellite communication based on space-time trellis code

Abstract

In this paper, a cooperative satellite system consisting of two satellites is considered. After building the channel model, the channel capacity is analysed. Since the propagation time of the signal via different satellites is not equal, a scheme to handle the propagation time difference is proposed. Considering the various propagation time difference of different users, the scheme takes advantage of a proper kind of Space-Time Trellis Code (STTC) to maintain the performance of the transmission. The simulation results show that the STTC has better performance than other coding schemes and can maintain the performance for the users with different propagation time difference.