Journal of Guangxi Normal University(Natural Science Edition) ›› 2014, Vol. 32 ›› Issue (3): 6-11.

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An Improved Tone Reservation Algorithm Based on FFT/IFFT for PAPR Reduction

HE Dong-dong, LI Chuan-qi   

  1. College of Electronic Engineering, Guangxi Normal University, Guilin Guangxi 541004, China
  • Received:2014-06-10 Online:2014-09-25 Published:2018-09-25

Abstract: In OFDM systems, signals with a large PAPR may bring serious distortions, resulting in dramatic reduction of system BER performance. Tone reservation scheme can reduce the PAPR, but has a high computational complexity, Tone reservation method based on FFT/IFFT can reduce computational complexity, but can’t suppress the PAPR effectively and the lager amplification factor deteriorates BER performance. An improved tone reservation method based on FFT/IFFT is proposed to restrain the high PAPR. The reserved subcarrier’s peak cancelling signal is multiplied by different correction phase sequences and the signal with minimum PAPR among these alternative signals is selected to transmit. Simulation results show that, compared with the original algorithm, the proposed method can provide about 4dB PAPR performance gains with comparable computational complexity.

Key words: OFDM, PAPR, tone reservation, correction phase sequence

CLC Number: 

  • TN929.5
[1] HAO Yao-hong, Li Yu-quan, WANG Rong, et al. Fiber nonlinearity mitigation by PAPR reduction in coherent optical OFDM systems via biased clipping OFDM[J]. Chinese Optics Letters, 2012,10(1):20-23.
[2] Le GOFF S Y, KHOO B K, TSIMENIDIS C C, et al. A novel selected mapping technique for PAPR reduction in OFDM Systems[J]. IEEE Transactions on Communications, 2008, 56(11):1775-1779.
[3] 薛世春,侯嘉.一种准优化PAPR编码在OFDM系统中的应用[J]. 通信技术,2008,41(12):218-220.
[4] CHOI D H, WON K H, CHOI H J. An improved SLM cascade with iterative TR method for PAPR reduction in OFDM system[C]//Proceedings of 6th International ICST Conference on Communications and Networking in China. New York:IEEE Press, 2011:127-131.
[5] JIANG Tao, NI Chun-xing, XU Chang, et al. Curve fitting based tone reservation method with low complexity for PAPR reduction in OFDM systems[J]. IEEE Communications Letters, 2014,18(5):805-808.
[6] HENKEL W, WAKEEL A, TASESKA M. Peak-to-average ratio reduction with tone reservation in multi-user and MIMO OFDM[C]// Proceedings of First IEEE International Conference on Communications in China. New York:IEEE Press, 2012:372-376.
[7] 聂凌峰,张翠芳.一种基于FFT/IFFT的OFDM子载波预留方案[J].微计算机信息,2010,26(16):210-211,218.
[8] YANG Gang, YANG Zheng-jie, XU Jian-hua. PAPR reduction in the OFDM system employing tone reservation based on FFT/IFFT[C]// Proceedings of 2007 International Symposium on Communications and Information Technologies. New York:IEEE Press, 2007:91-94.
[9] 邱绍峰,陈鹏.线性变和预留子载波降低光OFDM系统的PAPR[J].光通信技术,2010,34(9):57-59.
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