给出接收信号眼图及系统仿真误码率，非归零型差分相位调制信号建模与仿真分析 ，包括广义互相关函数GCC时延估计。- The received signal is given eye and BER simulation systems, NRZ type differential phase modulation signal modeling and simulation analysis, Including the generalized cross-correlation function GCC time delay estimation.