Maximal Ratio Combining SC-FDMA Performance over Land Mobile Satellite Rice fading Channel

The fourth generation mobile communication has used MIMO (Multiple Input Multiple Output) technology to improve system performance .MIMO can be used to get better capacity, coverage, high data rates and throughputs. Land mobile satellite (LMS) systems are an important element of the third and fourth generation of wireless systems. In satellite communication system, the use of nonlinear Traveling Wave Tube (TWT) amplifier exhibits severe nonlinear distortions to the transmitted signal, in particular when the TWT works near saturation. As Single Carrier Frequency Division Multiple Access (SC-FDMA) has lower Peak to Average Power Ratio (PAPR) it can be used for uplink satellite communications. SC-FDMA is precoded version of OFDM and has low Peak to Average power Ratio (PAPR). Its performance is not as good as OFDM over Rayleigh channel .In the presence of Line Of Sight (LOS), SCFDMA has shown better performance than OFDM. In this work, SC-FDMA performance over correlated LMS Rician channels is investigated. Single Input Multiple Output (SIMO) Maximal Ratio Combining (MRC) SC-FDMA performance is compared with MMSE and ZF equalizer and studied for different allocated subcarriers antenna configuration and antenna co-relation factor. Keywords— LMS, MRC, OFDM, SC-FDMA, Antenna correlation factor