摘要
首先分析了定时恢复在非相干直接序列扩频中的必要性,然后利用滑动平均器将解扩后的非相干扩频信号等效为高倍采样的非扩频信号,最后选择了一种适合于非扩频信号定时估计的算法,并将该算法用于非相干扩频信号的定时估计。仿真表明,该算法性能满足非相干直接序列扩频信号对定时估计误差的要求。
The necessity of timing recovery for Non- coherent DSSS signal is analyzed at first, then the de-correlated signal is converted into high rate sampled non-DSSS signal by applying moving average, and at last, a proper algorithm that is normally used for the timing recovery of non-DSSS signal is used to estimate the timing error of the non-coherent DSSS signal. Simulation results show that the proposed method and the selected algorithm could meet the system performance requirement.
出处
《无线电工程》
2006年第9期30-31,41,共3页
Radio Engineering
