摘要:以太网发展已经进入了200 G/400 G新阶段,4级脉幅调制 has been used in the standard of several high-speed optical modules. And PAM4 modulation will become an important technical direction in 5G bearer network. In this paper, the related technologies and specifications of PAM4 technology in the optical communication applications is analyzed in details, and the system simulation scheme of PAM4 is given to guide the system design and device specification definition.
PAM4; linearity; bit error rate 调制方式升级方案中,4级脉幅调制。由于PAM4信号每个符号周期可以传输2 bit的信息,因此要实现同样的信号传输能力,PAM4信号的符号速率只有NRZ信号的一半。实际上PAM4在电气和电子工程师协会[1],来评估线性度指标,具体如式[2018-08-06].
http:///upload/cmc_upload/All/PAM-4_January2017_Final.pdf
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