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A Class of Low Complexity PTS Techniques for PAPR Reduction in OFDM Systems

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4 Author(s)
Yue Xiao ; Univ. of Electron. Sci. & Technol. of China, Chengdu ; Xia Lei ; Qingsong Wen ; Shaoqian Li

This letter presents a class of low complexity partial transmit sequence (LC-PTS) techniques for reducing the peak-to- average power ratio (PAPR) in orthogonal frequency division multiplexing (OFDM) systems. The basic principle is to analyze and utilize the correlation among the candidate signals generated in PTS, so as to simplify the computational complexity. Furthermore, the proposed technique focuses on simplifying the computation for each candidate signal, instead of reducing the total number of candidate signals such as in (Jayalath and Tellambura, 2000). Thus, it can be easily combined with other simplified techniques. Simulation results show that the new technique can effectively reduce the complexity compared with the conventional PTS scheme.

Published in:

Signal Processing Letters, IEEE  (Volume:14 ,  Issue: 10 )