| VBLAST系统译码算法的新方案 |
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| 引用本文： | 祁玉生,孔伟. VBLAST系统译码算法的新方案[J]. 南京邮电大学学报(自然科学版), 2005, 25(3): 37-40 |
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| 作者姓名： | 祁玉生 孔伟 |
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| 作者单位： | 南京邮电大学,通信工程系,江苏 南京,210003;南京邮电大学,通信工程系,江苏 南京,210003 |
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| 摘 要： | VBLAST(垂直分层空时编码)系统具有很高的频谱效率,但是误码性能一般。提出了一种迭代信号处理算法(ISP算法),利用最大的可用分集来改善通过迫零算法得到的初始数据的估计,从而提高系统的误码性能。并结合一种减小迫零算法计算量的改进算法进一步得到一种新的算法———改进ISP算法,仿真结果表明改进ISP算法大大减小了计算复杂度,而且只有很小的性能损失,因而更加适用在实际的系统之中。
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| 关 键 词： | VBLAST系统 迫零算法 ISP算法 改进ISP算法 |
| 文章编号： | 1000-1972(2005)03-0037-04 |
| 修稿时间： | 2004-05-19 |
A Novel Approach for VBLAST System Decoding Algorithm |
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| QI Yu-sheng,KONG Wei. A Novel Approach for VBLAST System Decoding Algorithm[J]. JJournal of Nanjing University of Posts and Telecommunications, 2005, 25(3): 37-40 |
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| Authors: | QI Yu-sheng KONG Wei |
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| Affiliation: | QI Yu-sheng,KONG WeiDepartment of Communication Engineering,Nanjing University of Posts and Telecommunications,Nanjing 210003,China |
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| Abstract: | The spectrum efficiency of VBLAST system is very high,but performance of VBLAST system is very poor.In this paper,iterative signal processing(ISP) algorithm is introduced.The ISP algorithm takes advantage of the maximum available diversity to improve the initial data estimate obtained by the ZF algorithm in order to improve the performance of VBLAST system.Then an improved ISP algorithm is presented by combining the ISP algorithm with an improved algorithm with less complexity.And simulation results show that the complexity of the improved ISP algorithm is decreased greatly,and the performance of the improved ISP algorithm is only decreased a little.Therefore,the improved ISP algorithm is more suitable for a practical system. |
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| Keywords: | Vertical bell laboratories layered space-time system Zero forcing algorithm Iterative signal processing algorithm Improved iterative signal processing algorithm |
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