Performance Estimation of 2*1 MISO-MCCDMA in Different Modulation Technique
Keywords:
CDMA, FDMA, MISO, MISO-MC-CDMA, MC-CDMAAbstract
In this research, we estimate the performance of a 2*1 MISO-MC-CDMA system in a Rayleigh fading channel using QPSK, 8-PSK, 8-QAM, 16-QAM, 32-QAM, and 64-QAM modulation schemes in MATLAB in order to lower the bit error rate (BER). CDMA is a multi-user technology that employs a spread spectrum system in which the transmitter's PN sequence generator is used to spread the sequence. This system is then integrated with OFDM (multi-carrier system), in which a single broadband frequency-selective carrier is converted into parallel narrowband flat-fading multiple sub-carriers in order to improve the system's performance, to form the MC-CDMA system. Implementing a 2*1 MISO system, consisting of two transmit antennas and one receive antenna, with a ZF decoder at the receiver to reduce bit error rate (BER) and transmit diversity 12 rate convolution ally encoded Altamonte STBC (Space Time Block Code) block code, optimises the performance of the 3G and 4G communication system by reducing BER and increasing gain.
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