PDM-16QAM系统中基于QPSK分区的相位估计算法实验研究
Experimental Study on Phase Estimation Algorithms Based on QPSK Partitioning in PDM-16 QAM system
实验搭建了224 Gb/s偏分复用16 进制正交幅度调制（PDM-16QAM）波分复用传输640 km相干检测系统平台，利用三种基于QPSK分区的相位估计算法对接收到的信号进行了数据处理，从误码率、误差向量幅度与计算复杂度三个方面对三种算法的实验效果进行了比较。并且基于性能最优与计算复杂度的平衡，提出了针对16QAM信号星座图中间圈的点省略的两级处理算法，在误码率性能和误差向量幅度性能基本保持不变的情况下，大大降低了计算复杂度。
In this paper, A 224 Gb/s PDM-16QAM WDM coherent detection 640 km transmission experimental platform is set up. The received signal is processed by three phase estimation algorithms, obtaining the comparison results in aspects of bit error rate, the error vector magnitude and the computational complexity. A modified algorithm omitting the two-stage processing of points in the intermediate ring of 16QAM constellation is proposed based on the trade-off between good performance and computational complexity. Results show that, the modified algorithm P1,3/ML reduced the computational complexity greatly while the BER and EVM performance remain unchanged.
张晓光、翁轩、席丽霞、付璋
通信
通信与信息系统偏分复用16进制正交幅度调制相干检测相位估计计算复杂度
ommunication and information systemPolarization division multiplexing16 quadrature amplitude modulationCoherent detectionPhase estimationComputational complexity
张晓光,翁轩,席丽霞,付璋.PDM-16QAM系统中基于QPSK分区的相位估计算法实验研究[EB/OL].(2013-12-04)[2025-08-16].http://www.paper.edu.cn/releasepaper/content/201312-62.点此复制
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