Iterative Polar Quantization-Based Modulation to Achieve Channel Capacity in Ultrahigh-Speed Optical Communication Systems
Iterative Polar Quantization-Based Modulation to Achieve Channel Capacity in Ultrahigh-Speed Optical Communication Systems
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DOI：
10.1109/jphot.2010.2051219
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发表时间：
2010-06
影响因子：
2.4
通讯作者：
H. Batshon;I. Djordjevic;Lei Xu;Ting Wang
中科院分区：
文献类型：
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作者：
H. Batshon;I. Djordjevic;Lei Xu;Ting Wang
在本文中，我们提出了一种基于迭代极量化（IPQ）的非均匀编码调制格式，作为实现超高速光通信系统信道容量的方案。所提出的调制格式采用针对高斯信道优化的结构化低密度奇偶校验（LDPC）编码，结合极化多路复用，可以实现每波长800 Gb/s的聚合速率，并利用目前可用的50 GS/s的组件。使用编码IPQ，我们表明我们可以实现高达25 dB的信噪比（SNRs）容量，并在编码星正交调幅（QAM）光传输系统中增加275公里的总传播距离。
In this paper, we propose a nonuniform coded-modulation format based on iterative polar quantization (IPQ) as a scheme to enable achieving channel capacity in ultrahigh-speed optical communication systems. The proposed modulation format is coded with structured low-density parity-check (LDPC) codes optimized for Gaussian channels and, in combination with polarization-multiplexing, can achieve 800 Gb/s per wavelength aggregate rate and beyond utilizing the currently available components operating at 50 GS/s. Using coded IPQ, we show that we can achieve capacity for signal-to-noise ratios (SNRs) of up to 25 dB and increase the total propagation distance over optical transmission systems by 275 km over coded star-quadrature amplitude modulation (QAM).