Role of PAF in a multi-satellite CDMA based LEO satellite system
U.A. Waheed, Dileep V.K · 2002
The downlink of a LEO satellite communication system employing power controlled DS-CDMA and exploiting satellite diversity is analyzed and its performance is computed on the BER floor with coherent detection. The performance evaluated using a quasi-analytic method has been thoroughly validated by means of extensive Monte-Carlo simulations. The effect of MAI (multiple access interference) on the performance has been investigated with the power amplitude factor (PAF). The quantitative results tend to indicate that diversity improves the system performance provided that optimal power control scheme is employed. A realistic convolutional coding with hard-decision decoding is assumed to obtain specific results.