| 一种空间相关的Nakagami-m衰落下MIMO-OFDM系统误码率计算方法 |
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| 引用本文： | 张金荣,王东,曹长修,唐贤伦.一种空间相关的Nakagami-m衰落下MIMO-OFDM系统误码率计算方法[J].郑州大学学报(工学版),2007,28(2):73-76. |
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| 作者姓名： | 张金荣 王东 曹长修 唐贤伦 |
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| 作者单位： | 1. 重庆大学,自动化学院,重庆,400030
2. 重庆工学院,计算机学院,重庆,400050 |
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| 摘 要： | 为了获得Nakagami相关衰落下各参数对MIMO系统误码率的影响,首先给出了一种新的MI-MO-OFDM系统模型.接着对空间相关的基于STBC编码的MIMO-OFDM系统在Nakagami-m平坦衰落下的信道误码率进行了研究,给出了一种误码率的表达式,分析了空间相关性和分布参数对系统的误码率的影响.最后给出空间相关条件下的STBC的误码率性能仿真,以验证理论分析的有效性.结果表明,在Rayleigh和Rice分布都不足以描述信道特性的情况下,采用Nakagami分布比较吻合实际测量的数据,信道衰落基于Nakagami-m分布的STBC编码能很好的满足MIMO-OFDM系统的差错性能要求.
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| 关 键 词： | MIMO-OFDM系统 Nakagami分布 相关衰落 误码率 |
| 文章编号： | 1671-6833（2007）02-0073-04 |
| 修稿时间： | 2006-11-172007-03-02 |
An Algorithm of Symbol Error Rate of MIMO-OFDM System in Nakagami Spatial Fading Channels |
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| ZHANG Jin-rong,WANG Dong,CAO Chang-xiu,TANG Xian-lun.An Algorithm of Symbol Error Rate of MIMO-OFDM System in Nakagami Spatial Fading Channels[J].Journal of Zhengzhou University: Eng Sci,2007,28(2):73-76. |
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| Authors: | ZHANG Jin-rong WANG Dong CAO Chang-xiu TANG Xian-lun |
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| Affiliation: | 1. College of Automation, Chongqing University, Chongqing 400030, China;2. School of Computer Science and Engineering Chongqing Institute of Technology, Chongqing 400050, China |
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| Abstract: | To get the influence on signal error rate(SER) of MIMO system parameters,a basic MIMO-OFDM model is first described.Then researches on SER of this MIMO-OFDM model based on STBC in Nakagami spatial fading channels are conducted,and the corresponding SER formula is given which is followed by influence analysis of spatial correlation and Nakagami distribution parameter on SER.Finally,the analytical results are verified through our computer simulation made for this method.Results reveal that adopting Nakagami fading channels can relatively accord with practice data in contrast with Rayleigh distribution or Rice distribution in some cases,and STBC in Nakagami spatial fading channels can meet with the performance requirement of MIMO-OFDM system. |
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| Keywords: | MIMO-OFDM system Nakagami distribution spatial fading symbol error rate |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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