| Analytical Expression for the MIMO Channel Capacity |
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| 作者姓名： | 赵熠飞 赵明 肖立民 王京 |
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| 作者单位： | Department of Electronic Engineering Tsinghua University Beijing 100084 China，Department of Electronic Engineering Tsinghua University Beijing 100084 China，Department of Electronic Engineering Tsinghua University Beijing 100084 China，Department of Electronic Engineering Tsinghua University Beijing 100084 China |
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| 基金项目： | SupportedbytheNationalNaturalScienceFoundationofChina(No.90204001)andtheNationalHigh-TechResearchandDevel-opment(863)ProgramofChina(No.2003AA12331002) |
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| 摘 要： | Introduction Information theory has demonstrated the enormous po-tential capacity of wireless communication systems with antenna arrays at both the transmitter and the re-ceiver1,2],when the channel exhibits rich scattering and complete channel state inf…
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| 关 键 词： | MIMO CCDF 多输入多输出 通路容量 停止容量 瑞利衰落信道 |
| 收稿时间： | 2004-10-24 |
| 修稿时间： | 2004-10-242005-01-25 |
Analytical Expression for the MIMO Channel Capacity |
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| ZHAO Yifei,ZHAO Ming,XIAO Limin,WANG Jing.Analytical Expression for the MIMO Channel Capacity[J].Tsinghua Science and Technology,2006,11(3):271-277. |
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| Authors: | ZHAO Yifei ZHAO Ming XIAO Limin WANG Jing |
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| Institution: | Department of Electronic Engineering, Tsinghua University, Beijing 100084, China |
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| Abstract: | This paper presents analytical expressions for the multiple-input multiple-output (MIMO) channel capacity in frequency-flat Rayleigh fading environments. An exact analytical expression is given for the er-godic capacity for single-input multiple-output (SIMO) channels. The analysis shows that the SIMO channel capacity can be approximated by a Gaussian random variable and that the MIMO channel capacity can be approximated as the sum of multiple SIMO capacities. The SIMO channel results are used to derive ap-proximate closed-form expressions for the MIMO channel ergodic capacity and the complementary cumula-tive distribution function (CCDF) of the MIMO channel capacity (outage capacity). Simulations show that these theoretical results are good approximations for MIMO systems with an arbitrary number of transmit or receive antennas. Moreover, these analytical expressions are relatively simple which makes them very use-ful for practical computations. |
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| Keywords: | multiple-input multiple-output (MIMO) system ergodic capacity outage capacity analytical ex-pression Rayleigh fading channel |
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