Mitigation of PAPR in OFDM Using the Combination of Discrete Cosine Transform-II and Partial Transmit Sequence Techniques
نویسندگان
چکیده
Orthogonal frequency division multiplexing (OFDM) is a peculiar case of multicarrier transmission technique for high speed data transmission over multipath fading channels. The high Peak to Average Power Ratio (PAPR) is one of the most detrimental aspects in the OFDM system, as it degrades the efficiency of the power amplifier in the transmitter. Discrete Cosine Transform-II (DCT-II) is a less complex and distortion less method used to mitigate the PAPR. In this paper, a combination of Discrete Cosine Transform-II and Partial Transmit Sequence (PTS) is used to reduce the PAPR of the transmitted OFDM signal and results are compared with DCT-II and normal OFDM signal. Simulation results show that the combination of DCT-II and PTS shows better PAPR reduction. KeywordsCCDF, DCT-II, OFDM, PAPR, PTS
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