Peak to Average Power Ratio Reduction in MIMO-OFDM Systems using Modified Bacterial Foraging .....

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IJERTV9IS020340
Peak to Average Power Ratio Reduction in MIMO-OFDM Systems using Modified Bacterial Foraging Optimization and Iterative Learning Control

Muhammad Fawad , Muhammad Iqbal

Multiple Input Multiple Output (MIMO) Orthogonal Frequency Division Multiplexing (OFDM) is common and prominent technology being used for fourth generation (4G) broadband wireless communications. MIMO is combined with OFDM to obtain the benefits of both. This MIMO- OFDM technology offer resistance to frequency selective fading, tolerance from multi path delay spread, accompanied by high data rates and consistent data communication. MIMO-OFDM systems experience problem of high Peak to average power ratio (PAPR). Among methods for decreasing PAPR one is partial transmit sequence (PTS) technique. Modified bacterial foraging optimization (BFO) is used as optimization technique for rotation factors search. When this method is used in conjunction with PTS, provides less PAPR. Also, iterative learning Control (ILC) is used to decrease the PAPR. This technique provides less PAPR than BFO technique.
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