宽带CDMA中的多用户检测技术研究

Research On Multi-user Detection Technique for Wideband CDMA System

研究了多用户检测技术在宽带 CD-MA系统中的应用。比较系统地介绍了最佳多用户检测和次最佳多用户检测接收机的原理 ,对多级串行和并行干扰抵消算法进行了仿真 ,并给出了结论 :从复杂度和误码性能两方面综合考虑 ,干扰抵消接收机的抵消级数选为 3级时 ,接收机的性能最优。

This paper studies the application of multi user detection technique in wideband CDMA system. It introduces principles of optimum and sub optimum multi user detection receivers systematically. And then it simulates the algorithms of multi stage serial and parallel interference cancellation, at last, considering complexity and BER performance, it gives the result that the performance of the receiver is optimum while the stage of the interference cancellation receiver is No.3.