Performance Analysis of Uplinks for Regenerative Satellite Repeaters

摘要

The conceptual design of satellite communications considering on-board regenerative repeaters was studied. Uplink (complete transmission chain) using differentially coherent phase shift keying operating in a time division multiple acess burst mode environment was considered. The effects of imperfect block components as well as the intefering signals effects on the system performances were analyzed. A design procedure and some general criteria are exposed in order to speed up the design of these transmission systems. The impairing effects of the disturbing factors are considered with respect to an ideal reference system in both transient and steady state working conditions. The symbol error probability as a function of signal to noise ratio is the measure of performance. The considered impairing factors are: (1) impaired transmitting and receiving filters; (2) imperfect modulators and demodulators; (3) imperfect clock recovery. The simulation results, obtained using the TOPSIM facilities, are summarized.