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In this paper we estimate the performance of 2*4 MIMO-MC-CDMA system usingconvolution code in MATLAB which highly reduces BER. MC-CDMA (Multi CarrierCode Division for Multiple Access) is a multiuser and multiple access systemwhich is formed by the combination of OFDM and CDMA and convolution encodingscheme is used in encoder of CDMA as FEC (Forward Error Correction) code toreduce BER (Bit Error Rate). MC-CDMA system is a multicarrier system in whichsingle wideband frequency selective carrier is converted into parallelnarrowband flat fading multiple sub-carriers to optimize the performance ofsystem. Now this system further improved by combination of 2*4 MIMO (MultipleInput Multiple Output) system which utilizes ZF (Zero Forcing) decoder at thereceiver to reduce BER and also half rate convolutionally encoded Alamouti STBC(Space Time Block Code) block code as transmit diversity of MIMO for multipletransmission of data through multiple transmit antenna. Main advantage of usingMIMO-MC-CDMA using convolution code is to reduce the complexity of system andto reduce BER with increased gain. In this paper we analyze system performancein different modulation schemes like, QPSK, 8PSK, 8QAM, 16QAM, 32QAM and 64QAMin Rayleigh fading channel using MATLAB.

Performance Estimation of 2*4 MIMO-MC-CDMA Using Convolution Code in Different Modulation Technique using ZF Detection Scheme