O-OFDM系统中基于相关性分析的改进PTS算法

doi:10.12068/j.issn.1005-3026.2019.06.008

东北大学学报:自然科学版 ›› 2019, Vol. 40 ›› Issue (6): 801-806.DOI: 10.12068/j.issn.1005-3026.2019.06.008

O-OFDM系统中基于相关性分析的改进PTS算法

季策，马福永

(东北大学计算机科学与工程学院，辽宁沈阳110169)

收稿日期:2018-05-08 修回日期:2018-05-08 出版日期:2019-06-15 发布日期:2019-06-14
通讯作者: 季策
作者简介:季策(1969-)，女，辽宁沈阳人，东北大学副教授.
基金资助:
国家自然科学基金资助项目(61673093，61370125)；沈阳市科技计划项目(F16-205-1-01).

Improved PTS Algorithm Based on Correlation Analysis in O-OFDM System

JI Ce， MA Fu-yong

School of Computer Science & Engineering， Northeastern University， Shenyang 110169， China.

Received:2018-05-08 Revised:2018-05-08 Online:2019-06-15 Published:2019-06-14
Contact: MA Fu-yong
About author:-
Supported by:
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摘要/Abstract

摘要： 为了解决光正交频分复用系统的高峰均功率比问题，提出了一种基于相关性分析的部分传输序列算法.该算法通过分析备选信号之间的相关性，将强相关信号和弱相关信号进行分类，对强相关信号进行选择性搜索，对弱相关信号进行全搜索，这样在整体上了减少搜索次数.此外，通过分析备选相位因子序列之间的关系，优化相位因子加权过程.仿真结果表明，在三种分割状态下，均能有效改善系统峰均功率比，尤其在交织分割状态下，该算法与传统部分传输序列算法相比，实现了无峰均功率比性能损失，且计算复杂度得到大幅度降低.

关键词: 光正交频分复用系统, 峰均功率比, 部分传输序列, 信号相关性, 加权优化

Abstract: In order to solve the problem of peak-to-average power ratio of optical orthogonal frequency division multiplexing system， a partial transmission sequence algorithm based on correlation analysis is proposed. By analyzing the correlation among the alternative signals， the algorithm classifies the strong correlation signal and the weak correlation signal， and searches the strong correlation signal selectively and the weak correlation signal completely， thus reducing the searching times on the whole. In addition， this paper optimizes the phase factor weighting process by analyzing the relationship between alternative phase factor sequences. The simulation results show that the peak-to-average power ratio of the system can be improved effectively under the three segmentation states. Especially in the interleaved segmentation state， the proposed algorithm is compared with the traditional partial transmission sequence algorithm. The proposed algorithm is with no-performance loss of peak-to-average power ratio， and the computational complexity is greatly reduced.

Key words: optical orthogonal frequency division multiplexing system, peak-to-average power ratio, partial transmission sequence, signal correlation, weighted optimization

中图分类号:

TN919.3

季策，马福永. O-OFDM系统中基于相关性分析的改进PTS算法[J]. 东北大学学报:自然科学版, 2019, 40(6): 801-806.

JI Ce， MA Fu-yong. Improved PTS Algorithm Based on Correlation Analysis in O-OFDM System[J]. Journal of Northeastern University Natural Science, 2019, 40(6): 801-806.

参考文献

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O-OFDM系统中基于相关性分析的改进PTS算法

Improved PTS Algorithm Based on Correlation Analysis in O-OFDM System

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