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요약정보
一种基于多步插值的频偏估计法
Resource Type
article
Authors
李海涛
;
辛鹏
;
李垠韬
;
黄丽艳
;
安慧蓉
;
袁卫国
;
雷学义
Source
Guangtongxin yanjiu, Vol , Pp 19-22 (2017)
Subject
相干光通信
频偏估计
快速傅里叶变换
多步插值
Applied optics. Photonics
TA1501-1820
Language
Chinese
ISSN
1005-8788
Online Access
Open Access (DOAJ)
Find it @ DONGA
초록
提出了一种基于多步插值的频偏估计算法,用于相干光通信中数字相干接收机的频偏估计补偿。该算法首先采用少量的数据点作FFT(快速傅里叶变换),粗估计出频偏值,然后采用DFT(离散傅里叶变换)进行多步插值计算,降低了计算复杂度。在一个28GBaud的QPSK(正交相移键控)仿真系统中进行了仿真验证,结果表明,与最新报道的LS(最小二乘)算法相比,该文所提算法可以大大降低现有算法的复杂度。
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