Performance analysis of linear binary block coded optical PPM CDMA system with soft-decision decoding

摘要

We obtain upper bounds on the bit-error rate (BER) for performance of linear binary block coded optical pulse position modulation (PPM) code-division multiple-access (CDMA) systems with soft-decision decoding. We compare the performance of BCR-coded binary PPM (BPPM) CDMA systems with soft-decision decoding with that of BCH-coded BPPM CDMA systems with hard-decision decoding. We show that BCH-coded optical PPM CDMA systems using soft-decision decoding can achieve much lower BER than BCH-coded optical PPM CDMA systems using hard-decision decoding.