基于LMS的检后盲自适应XPIC算法仿真

Simulation on LMS-based Post-Detection Blind Adaptive XPIC Algorithm

基于对检前、检后、检前-检后级联三种XPIC技术优缺点的分析,提出了采用基于LMS的检后盲自适应的XPIC算法,并对检后算法进行了数学建模与仿真,给出了仿真结果和仿真结论。具体地,给出了交叉极化信道干扰模型和检后对消的算法模型,并在理想同步、存在定时偏差、存在多普勒偏差以及存在定时和多普勒联合偏差等多种情况下进行了仿真。结果显示,所提出的检后对消算法、仿真性能结果和结论,能为后续的算法研究、设计实现、设备研制与测试提供参考。

Based on advantages and disadvantages analysis of pre-detection,post-detection,pre-detection and post-detection joined XPIC,the LMS based blind adaptive XPIC algorithm is proposed.Then,the mathematical modeling and simulation of the post-detection algorithm are done,and the simulation results and simulation conclusions are acquired.Specifically,an algorithm model of cross-polarized channel interference model and post-detection cancellation is given.Simulation are done in various cases such as ideal synchronization,existence of timing deviation,presence of Doppler deviation,and presence timing and Doppler joint deviation.The experiment results indicate that the proposed post-detection cancellation algorithm,simulation performance results and conclusions could provide some reference for subsequent algorithm research,design implementation,equipment development and testing.