Analysis of BER Performance of Conventional PTS Scheme without side information in OFDM for different channel

Abstract

PTS is most important PAPR reduction technique in case of OFDM. High computational complexity and transmission of several side information bits are crucial flaws of the conventional PTS (C-PTS). In this paper a new PTS with simple detector is proposed to deal with these drawbacks of C-PTS. The candidates can be generated through cyclically shifting each sub block sequence in time domain and combining them in a recursive manner. The detector can favorably recover the original signal without side information by utilizing the natural diversity of the phase constellation for different candidate at the receiver. Numerical simulation shows that the proposed scheme performs very well in terms of PAPR. The chances of detection failure of the side information make evident that the detector could work without any side information with high reliability. Under both additive white Gaussian noise (AWGN) channel and Rayleigh fading channel the proposed scheme gains almost the same bit error rate (BER) performance as the conventional PTS without perfect side information.
Key Words: OFDM, PAPR, SQNR, PTS, BER