面向5G的偏振复用相干光MIMO-OFDM系统研究

摘要

Coherent optical orthogonal frequency division multiplexing system (CO-OFDM) is considered a promising technology for future 5G systems high speed optical transmission with its proifciency of digital signal processing. To begin with, the 5th generation mobile internet performance indicators and key technologies were brought forward. Then, the mathematical model and mechanism of transmission is emphatically analyzed and a joint channel estimation algorithm is proposed in PMD-MIMO-OFDM systems. Analysis and simulation results showed that, it is sufifcient to hinder the impact of PMD, realizing the insensitive reception for polarization signal.%相干光正交频分复用系统具有高效的数字信号处理能力，这是第5代移动通信骨干光网络实现高速传输的有效方案。首先探讨第五代移动互联网衡量指标、关键技术等，对基于偏振复用技术的相干光OFDM系统传输机理及数学模型进行分析，并在此基础上介绍了系统联合信号均衡算法。结果表明，PMD-CO-OFDM系统采用联合信号均衡可有效抑制偏振复用带来的噪声影响，实现偏振信号的不敏感接收。