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Carrier-less amplitude-phase geometric probabilistic hybrid shaping 16QAM scheme applied to data center networks

机译:无载波幅度相位几何概率混合整形16QAM方案应用于数据中心网络

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摘要

A hybrid shaping scheme, carrier-less amplitude and phase modulation geometric-probabilistic hybrid shaping 16QAM (CAP-GPS-16QAM), is proposed for data center networks. The probabilistic shaping is achieved by applying the proposed probabilistic subset shaping to the constellation after geometric shaping (GS). An intensity modulation/direct detection experimental system of 5 GBaud is built to verify the proposal. The results show that the gains of the proposed scheme are 2.4, 2.6, and 3 dB compared with CAP-GS-16QAM, CAP-PAS-16QAM, and CAP-square-16QAM, respectively, at BER = 10~(-3). Meanwhile, in terms of generalized mutual information, the proposal improves the performance by 0.078, 0.125, and 0.153 bits/symbol compared with CAP-GS-16QAM, CAP-PAS-16QAM, and CAP-sauare-16QAM, respectively.
机译:针对数据中心网络,提出了一种混合整形方案,即无载波幅度和相位调制几何概率混合整形16QAM(CAP-GPS-16QAM)。概率整形是通过将拟议的概率子集整形应用于几何整形(GS)之后的星座图来实现的。建立了5 GBaud的强度调制/直接检测实验系统以验证该建议。结果表明,在BER = 10〜(-3)时,与CAP-GS-16QAM,CAP-PAS-16QAM和CAP-square-16QAM相比,该方案的增益分别为2.4、2.6和3 dB。 。同时,在广义互信息方面,与CAP-GS-16QAM,CAP-PAS-16QAM和CAP-sauare-16QAM相比,该建议将性能分别提高了0.078、0.125和0.153位/符号。

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