Signal shaping to achieve OOK and PSK co-existence for improved optical access network performance
Signal shaping to achieve OOK and PSK co-existence for improved optical access network performance
复制标题
信号整形以实现 OOK 和 PSK 共存，从而提高光接入网络性能
DOI：
10.11648/j.ajnc.20140304.12
复制
发表时间：
2014
期刊：
影响因子：
--
通讯作者：
Y. Okumura M. Kato and K. Fujii
中科院分区：
文献类型：
--
作者：
玉置公寿;棟安実治;Satsuki Inagaki・Shigeru Shimamoto・Xiwen Li・JIA Gongping;Y. Okumura M. Kato and K. Fujii
本文提出了一种新颖的符号映射，该符号映射使用信号整形来通过相位信息来缓解星座共享中的 BER 问题。这种映射解决了最关键的问题之一；无源光网络 (PON) 中 OOK 和 PSK 星座共享中 PSK 符号的小欧几里得距离。星座共享使下一代 PON 能够使用基于数字信号处理 (DSP) 技术的先进调制格式覆盖现有 PON，从而很好地支持接入网络的迁移。幅移键控 (ASK)、相移键控 (PSK) 和正交幅度调制 (QAM) 的调制格式可以与利用开关键控 (OOK) 的现有 PON 共存。假设 OOK 和 PSK 共存，所提出的映射旨在最大化符号距离。本文展示了所提出的 OOK 和 PSK 信号映射的配置、操作原理和性能。它还表明，星座共享与现有 PON 和下一代技术相结合，改善了 OOK 和 PSK 的 BER 特性。
This paper proposes a novel symbol mapping that uses signal shaping to alleviate the BER problem in constellation sharing with the use of phase information. This mapping solves one of the most critical problems; the small Euclid distance of the PSK symbols in the constellation sharing of OOK and PSK in Passive Optical Networks (PONs). Constellation sharing enables next generation PONs to overlay existing PONs with the use of an advanced modulation format based on the Digital Signal Processing (DSP) technology that well supports migration of the access network. The modulation format of Amplitude Shift Keying (ASK), Phase Shift Keying (PSK), and Quadrature Amplitude Modulation (QAM) can co-exist with the existing PONs, which utilize On-off Keying (OOK). The proposed mapping is designed to maximize the symbol distance assuming the co-existence of OOK and PSK. This paper shows the configuration, operation principles, and performance of the proposed signal mapping for OOK and PSK. It also shows that constellation sharing improves the BER characteristics of OOK and PSK in conjunction with an existing PON and the next generation technology.