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A OFDM PAPR Reduction Scheme Using Sub-sequence Phase Optimization  

Yoon, Yeo-Jong (Department of Information Communications Engineering, Chungnam National University)
Lim, Sun-Min (Department of Information Communications Engineering, Chungnam National University)
Eun, Chang-Soo (Department of Information Communications Engineering, Chungnam National University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea TC / v.42, no.12, 2005 , pp. 117-126 More about this Journal
Abstract
In this paper, we present a new method for the reduction of the PAPR (peak to average power ratio) of OFDM signals. The idea behind the proposed method is that IFFT is implemented often with software for a digital signal processor such that we may avoid the repeated calculations to reduce the computational operations: we define sub-sequences in the IFFT process and then multiply the optimum phase rotation factors to them to minimize the PAPR. The PAPR reduction performance of the proposed method is equal to that of the interleaved partition scheme of the PTS (partial transmit sequence) method with only 1/3 computational operations of it.
Keywords
BASK; shutter; repeater; BER; viterbi;
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