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FH-SSMA with Band-efficient modulations over cellular fading channels

We present frequency hopped spread-spectrum multiple-access (FH-SSMA) employing bandwidth-efficient modulations that are phase-continuous during each hop. The particular cases of minimum-shift keying (MSK), and Gaussian minimum-shift keying (GMSK) are studied in detail. Noncoherent sequence estimation on a hop-by-hop basis is considered. System performance has been evaluated in selective Rayleigh fading with additive white Gaussian noise (AWGN) and the presence of multiple-access cellular interference. This system performance is better than the performance of FH-SSMA with noncoherent binary FSK modulation. The effects of power control, different fading covariance functions and different power bandwidth definitions are investigated.