Effect of Nonlinear Phase Noise on the Performance of $M$-Ary PSK Signals in Optical Fiber Links
Effect of Nonlinear Phase Noise on the Performance of $M$-Ary PSK Signals in Optical Fiber Links
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DOI：
10.1109/jlt.2012.2233195
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发表时间：
2013-02
影响因子：
4.7
通讯作者：
N. Ekanayake;H. Herath
中科院分区：
文献类型：
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作者：
N. Ekanayake;H. Herath
分析了放大自发发射(ASE)噪声和非线性相位(NLP)噪声对多相相干相移键控(CPSK)和差分相移键控(DPSK)误码率性能的影响。针对独立 ASE 和 NLP 噪声以及相关 ASE 和 NLP 噪声两种情况导出了符号错误概率 (SEP) 的表达式。给出了 2、4、8 和 16 级信号传导的数值结果，以证明 SEP 表达式的适用性。我们的结果表明，除了 M=2 之外，两种情况下 DPSK 的 SEP 大致相同。对于所有 M 的两种情况，CPSK 的 SEP 显着不同，这意味着独立相位噪声假设对于 CPSK 无效。
The effects of amplified spontaneous emission (ASE) noise and nonlinear phase (NLP) noise on the symbol error rate performance of M-ary coherent phase shift keying (CPSK) and differential phase shift keying (DPSK) are analyzed. Expressions for the symbol error probability (SEP) are derived for the two cases of independent ASE and NLP noises and dependent ASE and NLP noises. Numerical results are presented for 2-, 4-, 8-, and 16-level signaling to demonstrate the applicability of the SEP expressions. Our results indicate that the SEPs for DPSK for the two cases are approximately the same except for M=2. The SEPs for CPSK differ significantly for the two cases for all M , implying that independent phase noise assumption is not valid for CPSK.