Reduction of Papr in Orthogonal Frequency Division Multiplexing Using Optimal Search Partial Transmit Sequence Technique
نویسندگان
چکیده
Orthogonal frequency division multiplexing is one of the modulation techniques used as a high speed transmission technology with good interference reduction properties. High peak to average power ratio (PAPR) in transmitted signal is one of the major disadvantages of OFDM technique. We propose a optimal search algorithm called Partial Transmit Sequences (OSA-PTS) is used to reduce peak to average power ratio. The proposed new OSA-PTS method is a very effective in reducing the high peak to average power ratio during transmission. The earlier method is selective mapping (SLM) technique has the disadvantage that it requires high computational complexity which increases with increasing number of sub blocks. The new optimization search algorithm based partial transmit sequences method is used to reduce the high peak to average power ratio with low computational complexity. The output response of proposed new optimal search algorithm provides better PAPR reduction in the transmitted signal compared to the existing SLM method.
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