相移键控
正交调幅
误码率
电子工程
卡姆
串扰
计算机科学
物理
光通信
电信
频道(广播)
光学
工程类
出处
期刊:IEICE Transactions on Communications
[Institute of Electronics, Information and Communications Engineers]
日期:2021-04-01
卷期号:E104.B (4): 370-377
标识
DOI:10.1587/transcom.2020ebp3098
摘要
Inter-channel crosstalk is one of the limiting factors in multichannel optical systems. This paper presents a theoretical analysis of the bit-error-rate (BER) performance of quadrature phase shift keying (QPSK) and quadrature amplitude modulation (QAM) signals influenced by multiple crosstalk channels. The field distribution of multiple crosstalk channels in the constellation map is calculated. The BER of the QPSK/QAM signal, onto which the crosstalk light is superimposed, is then evaluated for a varying number of crosstalk channels under the condition that the total crosstalk power is constant. The results quantitatively confirm that as the channel number increases, the BER degradation caused by crosstalk light approaches that caused by Gaussian noise light. It is also confirmed that the degradations caused by crosstalk light and Gaussian light are similar for QAM signals of high-level modulation.
科研通智能强力驱动
Strongly Powered by AbleSci AI