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PAPR reduction in OFDM systems based on modified PTS algorithm with non-disjoint partition

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4 Author(s)
Houshou Chen ; Dept. of Electr. Eng., Nat. Chung Hsing Univ., Taichung, Taiwan ; Jyun-Jie Wang ; Cheng-En Tu ; Hsiang-Wang Chang

A modified PTS algorithm by partitioning an OFDM block into non-disjoint OFDM sub-blocks is presented in this paper for PAPR reduction of M-QAM OFDM signals. Since a 16-QAM constellation can be written as sum of two QPSK sets, a non-disjoint sub-block partition of the 16-QAM OFDM block is obtained by applying two different disjoint partitions on QPSK OFDM blocks. Compared to a disjoint sub-block partition in conventional PTS, numerical results show that the modified PTS with a non-disjoint partition achieves an improvement of PAPR reduction and BER performance for interleaved, adjacent, and random partitioning schemes.

Published in:

Personal, Indoor and Mobile Radio Communications, 2009 IEEE 20th International Symposium on

Date of Conference:

13-16 Sept. 2009