Abstract
Carrier Frequency Offset (CFO) is the main cause of the interference among the carriers leading to the Inter Carrier Interference (ICI). CFO is one of the drawbacks in orthogonal frequency division multiplexing (OFDM) which limits its performance and bandwidth efficiency and needs to be mitigated. OFDM system incorporated with multiple input multiple output (MIMO) systems can drastically reduce the effects of CFO and make the transmission more robust and reliable. In this paper, the performance of the MIMO–OFDM system is estimated over the Rayleigh channel for 2-array and 3-array antennas in the presence of CFO with the Selection combining technique. The bit error rate (BER) is calculated for different values of the CFO and modulation techniques over the Rayleigh Channel. The simulations clearly depict the reduction in bit error rate on incorporating the MIMO methodology in OFDM system.
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