NONLINEAR COMPENSATION METHOD, DEVICE AND SIGNAL RECEIVING SYSTEM

摘要

The present invention relates to the field of communications. A nonlinear compensation method, and in particular a device and a system are provided. The method comprises: computing respectively the square of the module of the input signals R x and R y , and obtaining |R x |2 and |R y |2; computing the filtering coefficient based on R x , R y , |R x |2 and |R y |2, and obtaining the first order filtering coefficient W xy and W yx ; performing filtering on W xy and W yx , and obtaining the filtered first filtering coefficient W' xy and W' yx ; performing delay processing on the input signals R x and R y , and obtaining the signals R xt and R yt synchronized with W' xy and W' yx , and performing filtering on R xt and R yt based on W' xy and W' yx , and obtaining the final output R' x and R' y . The present technical solution has advantages of excellent signal quality and increased OSNR residual of system.