| 相关性对BLAST系统信道容量性能的影响 |
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| 引用本文： | 张唯希,周杰.相关性对BLAST系统信道容量性能的影响[J].南京气象学院学报,2011(4):380-384. |
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| 作者姓名： | 张唯希 周杰 |
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| 作者单位： | 南京信息工程大学电子与信息工程学院, 南京, 210044;南京信息工程大学电子与信息工程学院, 南京, 210044 |
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| 基金项目： | 教育部留学基金委启动项目(教外司留[2007]1108);江苏省高校自然科学研究计划(08KJB510009) |
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| 摘 要： | 贝尔实验室分层空-时(Bell Labs Layered Space-Time,BLAST)通信系统相比其他的通信系统具有更高的频谱效率,能有效地提高系统信道容量.利用指数相关矩阵和均匀相关矩阵模型,分析比较了相关信道下BLAST系统的信道容量,并利用Matlab进行仿真.仿真结果表明:利用指数相关矩阵模型,BLAST系统可以获得更好的系统性能;在天线数目较小或信噪比较高时,两模型具有较高的近似度.
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| 关 键 词： | 贝尔实验室分层空-时码 信道容量 相关性 |
| 收稿时间： | 2010/9/14 0:00:00 |
The impact of correlation on channel capacity of BLAST architecture |
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| ZHANG Weixi and ZHOU Jie.The impact of correlation on channel capacity of BLAST architecture[J].Journal of Nanjing Institute of Meteorology,2011(4):380-384. |
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| Authors: | ZHANG Weixi and ZHOU Jie |
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| Institution: | School of Electronic & Information Engineering, Nanjing University of Information Science & Technology, Nanjing 210044;School of Electronic & Information Engineering, Nanjing University of Information Science & Technology, Nanjing 210044 |
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| Abstract: | The Bell Labs Layered Space-Time(BLAST)communication system has higher spectral efficiencies far beyond those offered by conventional techniques,and is able to increase the channel capacity effectively.In this paper,we investigate the channel capacities of BLAST architecture using the exponential correlation matrix and the uniform correlation matrix model.Numerical simulations are performed with Matlab to verify the proposed formulas. Simulation ressults show that the exponential correlation matrix model predicts better BLAST performance than the uniform correlation matrix model.With small antenna numbers or high signal-to-noise ratio(SNR),these two models approximate perfectly. |
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| Keywords: | BLAST channel capacity correlation |
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