基于频谱优化和交织的OFDM—PAPR降低算法

为了降低OFDM系统的PAPR，针对传统算法有损系统性能的缺点，提出了一种优化的算法。该算法基于频谱优化和交织思想，通过确定有效子载波个数来提高OFDM符号的平均功率和系统的频谱效率，并通过预判断，选择性地对OFDM符号进行交织处理。仿真结果表明，该算法在降低OFDM的PAPR的同时，也优化了系统的性能。...

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Bibliographic Details
Published in电子技术应用 Vol. 38; no. 8; pp. 99 - 102
Main Author 贾科进 杜太行 张效玮
Format Journal Article
LanguageChinese
Published 河北工业大学信息工程学院,天津,300401%石家庄市发展和改革委员会,河北石家庄,050000 2012
Subjects
交织
峰均功率比
正交频分复用
频谱效率
交织
频谱效率
峰均功率比
正交频分复用
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Summary:为了降低OFDM系统的PAPR，针对传统算法有损系统性能的缺点，提出了一种优化的算法。该算法基于频谱优化和交织思想，通过确定有效子载波个数来提高OFDM符号的平均功率和系统的频谱效率，并通过预判断，选择性地对OFDM符号进行交织处理。仿真结果表明，该算法在降低OFDM的PAPR的同时，也优化了系统的性能。
Bibliography:OFDM ; peak-to-average power ratio ; frequency efficiency ; interleaver
Jia Kejin, Du Taihang, Zhang Xiaowei（1. School of Information and Engeering, Hebei University of Technology, Tianjin 300401, China; 2. Shijiazhnang Development and Reform Commission, Shijiazhuang 050000, China ）
Concerning that the main drawback of traditional algorithm, an optimization algorithm was given to reduction PAPR in OFDM system. The algorithm heightened average power and frequency efficiency by computed optimization sub-band number. From the prejudgement, the algorithm disposed OFDM signs by interleaver selectively. Simulation results show that the algorithm can reduce the PAPR and improve capability of OFDM system.
11-2305/TN
ISSN:0258-7998
DOI:10.3969/j.issn.0258-7998.2012.08.030