Attractive Coded Modulation Schemes for the Uplink in CDMA Mobile Communication Systems

Two attractive coded modulation schemes for the uplink in CDMA mobile communication systems are investigated. First, a new IS-95 compatible demodulation scheme is introduced which avoids some disadvantages of conventional incoherent demodulation by using the signal power of each propagation path in the demodulation process. Second, di erential coherent phase-shift keying, an alternative with low complexity but comparable performance, is considered. For both systems, optimum demodulation and decoding procedures are derived by analytical methods. Performance evaluation by simulations and comparisons with known methods complete the paper.