Modified constant modulus algorithm based on constellation matching error with variable weight

Hongchao Guo; Feng Tian; Lijia Zhang; Qi Zhang; Qinghua Tian; Yongjun Wang; Xiangjun Xin

doi:10.1117/12.2505959

15 November 2018 Modified constant modulus algorithm based on constellation matching error with variable weight

Hongchao Guo, Feng Tian, Lijia Zhang, Qi Zhang, Qinghua Tian, Yongjun Wang, Xiangjun Xin

Proceedings Volume 10964, Tenth International Conference on Information Optics and Photonics; 109643N (2018) https://doi.org/10.1117/12.2505959
Event: Tenth International Conference on Information Optics and Photonics (CIOP 2018), 2018, Beijing, China

Abstract

In this paper, we propose a modified constant modulus algorithm based on constellation matching error with variable weight (VW-CME-MCMA) for polarization-mode dispersion (PMD) equalization in coherent optical communication system. The new algorithm added a constellation matching error (CME) term to the cost function of the traditional modified constant modulus algorithm (MCMA), considering that the CME term does not provide correct error information in the early stage of algorithmic equalization. In this case, the CME is equivalent to the noise role. Therefore, the new algorithm adaptively adjusts the weight of the CME term according to the error value of the current equalizer output signal. Through the analysis of simulation results, the new algorithm proposed in this paper can achieve faster convergence speed and lower steady-state error.

Citation Download Citation

Hongchao Guo, Feng Tian, Lijia Zhang, Qi Zhang, Qinghua Tian, Yongjun Wang, and Xiangjun Xin "Modified constant modulus algorithm based on constellation matching error with variable weight", Proc. SPIE 10964, Tenth International Conference on Information Optics and Photonics, 109643N (15 November 2018); https://doi.org/10.1117/12.2505959

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KEYWORDS

Evolutionary algorithms

Error analysis

Polarization

Telecommunications

Computer simulations

Electronic filtering

Fiber optic communications

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