此算法是基于PN序列的经典的定时同步算法，能直接出图，望对大家有用-This algorithm is based on the classic PN sequence timing synchronization algorithms, directly out of maps, useful look on the U.S.

用一个伪随机序列对信号进行扩频，然后解扩，最后得到误码率-Spread the signal with pn code,then de-spread the sequence,and finally get the bit error rate

code division multiple access-message signal, PN sequence signal, spreaded signal, despreaded signal,modulated signal and demodulated signal

M序列生成的matlab程序，m序列是目前CDMA系统中采用的最基本的PN序列。 是最长线性反馈移位寄存器序列的简称-M sequence generation matlab program, m sequence is the most basic PN sequence CDMA systems currently used. Is the longest linear feedback shift register sequences referred to as