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Reducing PAPR of OFDM Signals Using Modified Partial Transmit Sequences Technique Based on Erasure Decoding  

Kong, Min-Han (원광대학교 전기전자및정보공학부 무선통신연구실)
Song, Moon-Kyou (원광대학교 전기전자및정보공학부 무선통신연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.32, no.8C, 2007 , pp. 775-781 More about this Journal
Abstract
In this paper, a modified PTS(Partial Transmit Sequences) technique that uses erasure decoding of RS (Reed-Solomon) codes is presented. At the transmitter, some check symbols in a RS codeword partitioned into subblocks are phase-rotated by phase factors. The receiver decodes received codewords by regarding the phase-rotated check symbols as erasures. Hence, this technique does not need to transmit the side information about the phase factors chosen at the transmitter. The complexity of the receiver is also reduced since the estimation process for the phase factors is not required in the receiver. There is no performance degradation due to the transmission error of the side information or the estimation error of the phase factors. To evaluate the performance of the proposed PTS technique, the CCDF(Complementary Cumulative Distribution Function) of PAPR and the BER(Bit Error Rate) are compared with those of the conventional PTS techniques.
Keywords
PTS; PAPR; OFDM; Erasure decoding; RS codes;
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