| 几种接收机在MIMO信道下的性能比较 |
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| 引用本文： | 郑卫红,王中鹏.几种接收机在MIMO信道下的性能比较[J].电讯技术,2006,46(1):68-72. |
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| 作者姓名： | 郑卫红 王中鹏 |
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| 作者单位： | 浙江科技学院,信息与电子工程学院,杭州,310012;浙江科技学院,信息与电子工程学院,杭州,310012 |
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| 摘 要： | 多入多出（MIMO）无线信道具有空间复用增益和分集增益特性，因此MIMO系统和单入单出（SISO）无线系统相比能够获得更高的频谱效率。本文在不同天线组合下分析了几种MIMO空时信号处理算法的性能，仿真结果和理论分析表明：空间复用增益和分集增益不能同时获得最大，因此在设计MIMO通信系统时可根据实际情况选择天线数，即不仅考虑系统抵抗信道衰落的分集增益，还要考虑能够提供更高的数据传输速率，通过折衷考虑空间复杂增益和分集增益，从更全面的观点评估系统的性能。
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| 关 键 词： | 多入多出无线通信系统 接收机分层空时码 检测算法 VBLAST 性能比较 |
| 文章编号： | 1001-893X（2006）01-0068-05 |
| 收稿时间： | 2005-08-18 |
| 修稿时间： | 2005-08-182005-11-12 |
Performance Comparison of Several Receivers Based on MIMO Channels |
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| ZHENG Wei-hong,WANG Zhong-peng.Performance Comparison of Several Receivers Based on MIMO Channels[J].Telecommunication Engineering,2006,46(1):68-72. |
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| Authors: | ZHENG Wei-hong WANG Zhong-peng |
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| Affiliation: | School of Information Technology and Electronic Engineering, Zhejiang University of Science and Technology, Hangzhou 310012, China |
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| Abstract: | Multiple Input Multiple Output(MIMO) wireless channel is characterized by multiplexing gains and diversity gains,so MIMO wireless communication systems can offer high spectrum efficiency than single input single output communication systems.In this paper,several MIMO space-time processing algorithms are analyzed based on different antenna configurations.Simulation results and theoretic analysis state that multiplexing gains and diversity gains can not achieve most value at the same time.So when MIMO communication system is designed the antenna configurations may be selected for fact.By doing this,not only the diversity gain of the scheme is taken into considercetion to combat against fading,but also its ability to accommodate higher data rate as SNR increases,and therefore providing a more complete view by diversity-multiplexing tradeoff. |
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| Keywords: | VBLAST |
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