相位估计对DQPSK调制星地相干光通信系统性能的改善分析

2010 5th International ICST Conference on Communications and Networking in China Pub Date : 2010-08-01 DOI:10.4108/CHINACOM.2010.94

Peng Liu, Juanjuan Yan, Zheng Zheng

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引用次数: 3

摘要

采用相位调制的星地光通信系统的性能受到大气湍流引起的相位波动的限制。为了提高系统的性能，采用相干检测是一种有效的方法。本文研究了一种差分正交相移键控(DQPSK)调制的星地相干光通信系统，采用了基于m功率方案的相位估计算法。仿真结果表明，该方法可以有效地抑制大气湍流引起的相位噪声。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Analysis of improved performance for a satellite-to-ground coherent optical communication system with DQPSK modulation due to phase estimation

The performance of a satellite-to-ground optical communication system with phase modulation is limited by phase fluctuations induced by atmospheric turbulence. To improve the system performance, one effective way is to use coherent detection. In this paper, a satellite-to-ground coherent optical communication system with differential quadrature phase-shift keying (DQPSK) modulation is studied, and a phase estimation algorithm based on M-th power scheme is used. The simulation results show that the phase noise induced by atmospheric turbulence can be suppressed greatly.

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2010 5th International ICST Conference on Communications and Networking in China

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