| 基于符号判决反馈均衡的联合检测算法 |
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| 引用本文： | 周化雨,张勤.基于符号判决反馈均衡的联合检测算法[J].电路与系统学报,2009,14(5). |
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| 作者姓名： | 周化雨 张勤 |
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| 作者单位： | 1. 华南理工大学,电子与信息工程学院,广东,广州,510641
2. 中国传媒大学,信息工程学院,北京,100024 |
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| 基金项目： | 教育部科学技术研究重点项目基金资助 |
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| 摘 要： | 传统的联合检测算法使用的块线性均衡和块判决反馈均衡,它们是以整个数据块为单位进行均衡和检测的,导致系统矩阵比较庞大,计算复杂度较高.本文将系统矩阵分成可检测的最小单位--数据符号,来进行逐个符号的联合检测,产生基于符号线性均衡的联合检测.并且将块判决反馈均衡原理应用其中,得到基于符号判决反馈均衡的联合检测算法.此算法系统矩阵尺寸小得多,因此复杂度也小得多.符号判决反馈均衡既能减小噪声项,又能减小前一符号判决误差项,因此总体的性能接近于块判决反馈均衡.仿真实验表明了这一点.本文还讨论了不同用户不同扩频因子情形下该算法的改造,并提出按用户扩频因子大小排列用户数据符号的改进,仿真实验验证了这个改进的好处.
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| 关 键 词： | 均衡 联合检测 |
Symbol decision feedback equalization based joint detection algorithm |
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| ZHOU Hua-yu,ZHANG Qin.Symbol decision feedback equalization based joint detection algorithm[J].Journal of Circuits and Systems,2009,14(5). |
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| Authors: | ZHOU Hua-yu ZHANG Qin |
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| Affiliation: | ZHOU Hua-yu1,ZHANG Qin2(1.Electronic , Information Engineering Institute,South China University of Technology,Guangzhou 510641,China,2.Information Engineering School Communication University of China,Beijing 100024,China) |
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| Abstract: | The traditional joint detections use the block linear equalization and block decision feedback equalization,They all handle the equalization and detection with a whole data block,so the system matrix is much larger.In this paper the system matrix is divided into the minimal detectable units,that are data symbols,to jointly detect data symbol by symbol and finally generate a symbol linear equalization based joint detection.Neitherless we apply the principle of block decision feedback equalization into it to ... |
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| Keywords: | TD-SCDMA |
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