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光OFDM系统中一种联合改进的低复杂度PTS峰均比抑制技术

A Joint-improved PTS Scheme with Low Complexity of The PAPR Reduction Technology for O-OFDM Systems

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摘要

光正交频分复用系统(O-OFDM)的缺点之一是存在高的峰值平均功率比(PAPR), 部分传输序列(PTS)技术能够有效降低高PAPR出现的概率, 但其计算复杂度较高。针对该问题, 提出一种可降低计算复杂度的二阶PTS和削波(Clipping)联合改进的PAPR抑制方案。该方案首先将初始的输入信号进行d级逆快速傅里叶变换(IFFT)运算, 再进行子块划分, 然后进行剩下的n-d级IFFT运算。仿真结果表明, 该方案大大降低了计算复杂度, 并且在峰均比抑制效果和系统误码率(BER)方面都得到了较好的改善, 具有较高的实际应用价值。

Abstract

One of the main drawbacks of optical orthogonal frequency division multiplexing(O-OFDM) systems is high peak-to-average power ratio(PAPR), the partial transmission sequence(PTS) technology can effectively reduce the probability of high PAPR, but it has high computational complexity. Duo to this disadvantage, a joint-improved PAPR reduction scheme which combines a two-stage PTS with the clipping technology with lower computational complexity is proposed in this paper. The proposed algorithm partitions the initial input signals after the first d stages of IFFT, and then the remaining n-d stages IFFT operations are performed. The simulation results show that the scheme can greatly reduce the computational complexity and improve the PAPR reduction effect and the bit error rate (BER), and has a higher value in practical applications.

Newport宣传-MKS新实验室计划
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中图分类号:TN929.11

DOI:10.16818/j.issn1001-5868.2019.05.020

所属栏目:光电技术及应用

基金项目:国家自然科学基金项目(61471075); 重庆市基础与前沿研究计划项目(csts2017jcyjAX0427); 重庆邮电大学大学生科研训练计划项目(201901014).

收稿日期:2019-06-10

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作者单位    点击查看

袁建国:重庆邮电大学 光电信息感测与传输技术重庆市重点实验室, 重庆 400065
辛雪琪:重庆邮电大学 光电信息感测与传输技术重庆市重点实验室, 重庆 400065
赵鑫鑫:重庆邮电大学 光电信息感测与传输技术重庆市重点实验室, 重庆 400065
彭 云:重庆邮电大学 光电信息感测与传输技术重庆市重点实验室, 重庆 400065
袁 江:重庆邮电大学 光电信息感测与传输技术重庆市重点实验室, 重庆 400065
南蜀崇:重庆邮电大学 光电信息感测与传输技术重庆市重点实验室, 重庆 400065

联系人作者:袁建国(yyyyjg@126.com)

备注:袁建国(1968-), 男, 重庆人, 博士, 教授, 硕士生导师, 主要研究方向为光通信系统中OFDM技术与FEC编译码技术。

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引用该论文

YUAN Jianguo,XIN Xueqi,ZHAO Xinxin,PENG Yun,YUAN Jiang,NAN Shuchong. A Joint-improved PTS Scheme with Low Complexity of The PAPR Reduction Technology for O-OFDM Systems[J]. Semiconductor Optoelectronics, 2019, 40(5): 708-713

袁建国,辛雪琪,赵鑫鑫,彭 云,袁 江,南蜀崇. 光OFDM系统中一种联合改进的低复杂度PTS峰均比抑制技术[J]. 半导体光电, 2019, 40(5): 708-713

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