利用准时相关值的PN码定时误差检测器

PN code timing error detectors using on-time arm correlator

从利用准时支路相关值的角度出发,研究了用于DS/CDMA系统的改进型PN码定时误差检测器,分析了其性能,并与传统的定时误差非相干检测器和相干检测器进行对比,给出了数值和计算机仿真结果。研究表明,NCIELG型非相干检测器的性能较传统非相干定时误差检测器有明显改善,并且硬件电路更为简化。

In this paper several coherent and non-coherent all-digital timing error detection schemes using on-time arm correlator are described and analyzed for direct sequence spread spectrum signals. Results of the theoretical analysis and computer simulations show that the proposed NCIELG scheme has an improved tracking performance and simplified hardware structure as compared with the classical non-coherent detector in an AWGN environment.