| 用于MIMO信号检测的降低复杂度V-BLAST算法 |
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| 引用本文： | 刘谦雷,杨绿溪,许道峰.用于MIMO信号检测的降低复杂度V-BLAST算法[J].通信学报,2007,28(9):40-45. |
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| 作者姓名： | 刘谦雷 杨绿溪 许道峰 |
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| 作者单位： | 东南大学,无线电工程系,江苏,南京,210096 |
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| 基金项目： | 国家自然科学基金;江苏省自然科学基金 |
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| 摘 要： | 用于多输入多输出(MIMO)通信系统信号检测的V-BLAST算法其预处理具有较高的运算复杂度。对此作出改进,提出了一种降低复杂度V-BLAST算法。该算法在V-BLAST每一步的检测中不仅选取信噪比/信干噪比最大的一路信号、而且同时选取信噪比/信干噪比足够大的各路信号一起进行检测。仿真结果显示,该降低复杂度V-BLAST算法在取得与常规V-BLAST检测十分接近的误码性能的同时,达到了显著低于后者的预处理复杂度。
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| 关 键 词： | 信号检测 V-BLAST算法 运算复杂度 |
| 文章编号： | 1000-436X（2007）09-0040-06 |
| 修稿时间： | 2006-03-17 |
Reduced-complexity V-BLAST algorithm for MIMO signal detection |
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| LIU Qian-lei,YANG Lv-xi,XU Dao-feng.Reduced-complexity V-BLAST algorithm for MIMO signal detection[J].Journal on Communications,2007,28(9):40-45. |
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| Authors: | LIU Qian-lei YANG Lv-xi XU Dao-feng |
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| Affiliation: | Dept. of Radio Engineering, Southeast University, Nanjing 210096, China |
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| Abstract: | V-BLAST algorithm for the signal detection of multiple-input multiple-output(MIMO)communication sys-tems has a high complexity in its pre-processing.A reduced-complexity V-BLAST algorithm was proposed to improve it.This algorithm detects not only the layer with the maximum signal-to-noise ratio(SNR)/signal-to-interference-and-noise ratio(SINR)but also the ones with sufficiently large SNRs/SINRs in each stage of the V-BLAST algorithm.Simulation results show that while obtaining a very close performance to the conventional V-BLAST detection,the proposed re-duced-complexity V-BLAST algorithm achieves a significantly lower pre-processing complexity. |
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| Keywords: | signal detection V-BLAST algorithm computational complexity |
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