Hybrid C-OSLM algorithm for reducing Peak-to-Average Power Ratio in OFDM/OQAM

doi:10.3778/j.issn.1002-8331.1701-0278

Computer Engineering and Applications ›› 2018, Vol. 54 ›› Issue (12): 80-85.DOI: 10.3778/j.issn.1002-8331.1701-0278

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Hybrid C-OSLM algorithm for reducing Peak-to-Average Power Ratio in OFDM/OQAM

JIN Hanyang1，2, WANG Bo1，2, LI Yanlong1，2

1.Key Laboratory of Cognitive Radio and Information Processing Information Processing, Guilin University of Electronic Technology, Guilin, Guangxi 541004, China
2.Science and Technology on Information Transmission and Dissemination in Communication Networks Laboratory, The 54th Research Institute of China Electronics Technology Group Corporation, Shijiazhuang 050081, China

Online:2018-06-15 Published:2018-07-03

一种降低OFDM/OQAM系统峰均比的C-OSLM联合算法

靳寒阳1，2，王波1，2，李燕龙1，2

1.桂林电子科技大学认知无线电与信息处理教育重点实验室，广西桂林 541004
2.中国电子科技集团公司第五十四研究所通信网信息传输与分发技术重点实验室，石家庄 050081

Abstract

Abstract: In order to solve the problem of the OFDM/OQAM’s high Peak-to-Average Power Ratio（PAPR） caused by sub-channels’ overlapping, a hybrid PAPR reduction algorithm called Clipping-OSLM（C-OSLM） is proposed. Based on an Improved Overlapped Selective Mapping（IOSLM） method, this algorithm introduces the clipping in 2 ways to jointly reduce PAPR, and optimizes Clipping Rate（CR） and number of codes by considerably reducing the PAPR in OFDM/OQAM without deteriorating the error rate. The simulation results indicate that, C-OSLM can make a sharp fall in PAPR in OFDM/OQAM, meanwhile, the BER performance can be well protected.

Key words: Orthogonal Frequency Division Multiplexing/Offset Quadrature Amplitude Modulation（OFDM/OQAM）, Peak-to-Average Power Ratio（PAPR）, Selective Mapping（SLM）, clipping

摘要： 针对正交频分复用/交错正交幅度调制（OFDM/OQAM）系统由多个子信道叠加而引起高峰均比的问题，提出了一种基于OFDM/OQAM系统的重叠选择映射与限幅联合算法（C-OSLM）。该算法基于改进型重叠选择映射法（IOSLM）以两种方式引入限幅法，同时对码字数、限幅率（CR）进行优化以保证在误码率不变的条件下提升峰均比抑制性能。仿真结果表明，C-OSLM算法在保证OFDM/OQAM系统误码性能的同时，大幅降低了峰均比。

关键词: 正交频分复用/交错正交幅度调制, 峰均比, 选择映射, 限幅

JIN Hanyang1，2, WANG Bo1，2, LI Yanlong1，2. Hybrid C-OSLM algorithm for reducing Peak-to-Average Power Ratio in OFDM/OQAM[J]. Computer Engineering and Applications, 2018, 54(12): 80-85.

靳寒阳1，2，王波1，2，李燕龙1，2. 一种降低OFDM/OQAM系统峰均比的C-OSLM联合算法[J]. 计算机工程与应用, 2018, 54(12): 80-85.

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Hybrid C-OSLM algorithm for reducing Peak-to-Average Power Ratio in OFDM/OQAM

一种降低OFDM/OQAM系统峰均比的C-OSLM联合算法

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