摘要
文章首先研究了相干光OFDM(正交频分复用)通信系统中的线性损耗,包括IQ(同相/正交相)不平衡以及线性相位噪声;提出了一种DA(基于决策)的不需要周期性地插入训练数据的方法。计算机仿真结果表明,所提出的方法可以有效估计并补偿这两类线性损耗;在此基础上,提出了一种在考虑信道色散噪声的情况下,联合补偿IQ不平衡和线性相位噪声的新算法。
In this paper, the linear impairments of Coherent Optical Orthogonal Frequency-Division-Multiplexed （CO-OFDM） communication systems, including IQ imbalance and linear phase noise, are studied and a decision-aided compensation method without the need of periodic pilots proposed. Simulation results show that the proposed technique can effectively estimate and compensate these two linear losses. On this basis, a novel scheme is presented for joint compensation of IQ imbalance and phase noise in the presence of channel distortion.
出处
《光通信研究》
北大核心
2012年第6期10-12,38,共4页
Study on Optical Communications
