10 January 2018 MIMO signal progressing with RLSCMA algorithm for multi-mode multi-core optical transmission system
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Abstract
In the process of transmitting signals of multi-mode multi-core fiber, there will be mode coupling between modes. The mode dispersion will also occur because each mode has different transmission speed in the link. Mode coupling and mode dispersion will cause damage to the useful signal in the transmission link, so the receiver needs to deal received signal with digital signal processing, and compensate the damage in the link. We first analyzes the influence of mode coupling and mode dispersion in the process of transmitting signals of multi-mode multi-core fiber, then presents the relationship between the coupling coefficient and dispersion coefficient. Then we carry out adaptive signal processing with MIMO equalizers based on recursive least squares constant modulus algorithm (RLSCMA). The MIMO equalization algorithm offers adaptive equalization taps according to the degree of crosstalk in cores or modes, which eliminates the interference among different modes and cores in space division multiplexing(SDM) transmission system. The simulation results show that the distorted signals are restored efficiently with fast convergence speed.
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Yuan Bi, Yuan Bi, Bo Liu, Bo Liu, Li-jia Zhang, Li-jia Zhang, Xiang-jun Xin, Xiang-jun Xin, Qi Zhang, Qi Zhang, Yong-jun Wang, Yong-jun Wang, Qing-hua Tian, Qing-hua Tian, Feng Tian, Feng Tian, Ya-ya Mao, Ya-ya Mao, } "MIMO signal progressing with RLSCMA algorithm for multi-mode multi-core optical transmission system", Proc. SPIE 10617, 2017 International Conference on Optical Instruments and Technology: Optoelectronic Devices and Optical Signal Processing, 106170A (10 January 2018); doi: 10.1117/12.2295342; https://doi.org/10.1117/12.2295342
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