摘要
在 TD SCDMA系统中 ,使用联合检测技术来消除多址干扰 ( MAI)和符号间干扰 ( ISI)。本文对基于快速 Cholesky分解的线性联合检测算法迫零线性块均衡器 ( ZF BL E)和最小均方差线性块均衡器 ( MMSE BL E)进行了一定的分析和仿真。仿真结果表明 ,随着移动速度 V增大 ,两种算法的性能都呈现恶化趋势 ;而随着 Eb/ N0 以及天线阵元数的增大 ,都呈现提高趋势 ;且在相同天线数目下 ,随着用户数 K的减小 (干扰减小 ) ,两种算法的性能都呈现提高趋势。总体说来 ,MMSE BL E在性能上优于 ZF BL E。
In TDSCDMA, we use joint detection to eliminate MAI and ISI This paper compares the linear joint detection algorithm based on fast Cholesky which is ZFBLE and MMSE-BLE The simulation results show that the performance of those two algorithm decreases as the velocity increases, and promoted by adding the number of array and signaltonoise and reducing the number of users In summary, MMSEBLE outperforms ZFBLE
出处
《现代电子技术》
2004年第5期86-88,92,共4页
Modern Electronics Technique
