基于多输入多级递归软序列估计的PN码捕获算法

Acquisition of PN Sequence Based on Multi-Input Multi-Stage Recursion Sequence Estimation

为了进一步改进递归软序列估计(RSSE)算法在低信噪比下的PN码捕获性能,文章提出了多输入多级递归软序列估计(MIMS-RSSE)算法。仿真结果显示,与RSSE算法相比,MIMS-RSSE算法在硬件复杂度增加不多的条件下,较显著地降低了系统对输入信噪比的要求。

In order to improve the pseudo noise （PN） code acquisition performance of the recursion-soft-sequence-estimation （RSSE） algorithm at low chip signal-to-noise ratios （SNR）, a multi-input multi-stage recursion soft sequence estimation （MIMS-RSSE） algorithm is proposed in this paper. Simulation results show that the MIMS-RSSE algorithm performs dramatically better than RSSE algorithm at low chip SNR without significantly increased hardware.