C4. Multi Rate Single Code Multi Carrier Superposition Coded Modulation (MR-SC-MC-SCM) for Multi User Communications

This paper introduces a Multi Rate Single Code Multi Carrier Superposition Coded Modulation (MR-SC-MC-SCM) for Multi User Communication System, achieving Un-equal Error Protection (UEP) for each user using the multi rate coding concept to provide different levels of data protection based on the user application requirement with some complexity reduction. Saleh model is used as a High Power Amplifier (HPA) and the system performance has been studied over Additive White Gaussian Noise (AWGN), fading channel Jack model and Rician channel. A simple Chip-By-Chip (CBC) iterative Multi User Detection (MUD) strategy is used. The main contribution of this paper is to reduce the transceiver complexity in terms of number of encoders and decoders with minor performance degradation in-terms of Bit Error Rate (BER).