First the average and worst Bit error rate(BER) expression of QS-CDMA system was deduced, when the synchronous error is uniformly distributed within the symmetrical area.

• 我们首先推导出了QS-CDMA系统同步误差在对称区间上均匀分布的平均情况和最坏情况下系统误码率(BER)的表达式。