The wireless communications is one of the most active areas of technology development of our time. Recently, orthogonal frequency division multiplexing has been regarded as one of the core technologies for various wireless communication systems. The BER level is depend on the modulation type, SNR value and channel behavior. The Modulation schemes that we have used in this thesis are 4-QAM, 8-QAM, 16-QAM and 64-QAM which further improved using forward error correction codes (FEC). A comparison is made between the diversity gain of MIMO systems in terms of BER for high QAM modulation scheme. This work presents, by a simulation toll MATLAB R2013a used for model implemented using fading channel to the performance analysis of Bit Error rate (BER) V/S Signal to Noise ratio (SNR).
MIMO-System, AWGN, BER, Rician Channel, OFDM
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