Nonlinear compensation method for jointly using LUT (Loop Under Test) by transmitting and receiving ends in MLSE (Multimedia Local Square Error) detection scheme

The invention relates to the technical field of high-speed optical signal processing, in particular to a nonlinear compensation method for jointly using LUT by a receiving end and a transmitting end in an MLSE detection scheme. According to the method, the LUT technology (Joint Tx and Rx LUT-MLSE) and MLSE detection are jointly used at a receiving end and a transmitting end for the first time, nonlinear distortion of a system is effectively relieved, the inter-symbol crosstalk problem is eliminated, the sensitivity of a system receiver can be obviously improved, and the method is more suitable for being applied to an intensity modulation direct detection system of a bandwidth-limited high-speed high-order modulation format (PAM-8). 本发明涉及高速光信号处理技术领域，更具体地，涉及一种在采用MLSE检测方案中收发端联合使用LUT的非线性补偿方法。首次提出了在收发端共同使用LUT技术(Joint Tx and Rx LUT-MLSE)并使用MLSE检测，来有效缓解系统的非线性失真并消除码间串扰问题，本发明能够明显地提升系统接收机灵敏度，更适合应用于带宽受限的高速率高阶调制格式(PAM-8)的强度调制直接检测系统。