| 双选择瑞利信道MIMO-OFDM存在信道估计误差分析 |
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| 引用本文： | 李巨虎,陈鹏,贺志强,吴伟陵.双选择瑞利信道MIMO-OFDM存在信道估计误差分析[J].北京邮电大学学报,2012,35(1):107-110. |
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| 作者姓名： | 李巨虎 陈鹏 贺志强 吴伟陵 |
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| 作者单位： | 泛网无线通信教育部重点实验室(北京邮电大学),北京,100876;泛网无线通信教育部重点实验室(北京邮电大学),北京,100876;泛网无线通信教育部重点实验室(北京邮电大学),北京,100876;泛网无线通信教育部重点实验室(北京邮电大学),北京,100876 |
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| 基金项目： | 国家重点基础研究发展计划项目(2009CB320401);新一代宽带无线移动通信网科技重大专项项目(2010ZX03003-003-01,2012ZX03004005-002) |
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| 摘 要： | 双选择性(时域多变性和频域选择性)瑞利信道多入多出-正交频分复用(MIMO-OFDM)系统中,信道估计误差客观存在.为了研究双选择性瑞利信道中信道估计误差对MIMO-OFDM系统的影响,使用迫零检测和对Wishart分布的近似处理,从理论上推导出了存在信道估计误差时双选择不相关瑞利信道和双选择指数相关瑞利信道中MIMO-OFDM系统信干噪比(SINR)的概率分布.根据系统SINR概率分布,推导出了存在信道估计误差时系统的平均差错率和中断概率.仿真结果表明了理论分析的正确性.
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| 关 键 词： | 多人多出-正交频分复用 Wishart分布 信道估计误差 |
| 收稿时间： | 2011-10-18 |
Analysis on Performance of MIMO-OFDM Systems in Presence of Channel Estimation Error over Double-Selective Rayleigh Channels |
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| LI Ju-hu
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CHEN Peng
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HE Zhi-qiang
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WU Wei-ling.Analysis on Performance of MIMO-OFDM Systems in Presence of Channel Estimation Error over Double-Selective Rayleigh Channels[J].Journal of Beijing University of Posts and Telecommunications,2012,35(1):107-110. |
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| Authors: | LI Ju-hu CHEN Peng HE Zhi-qiang WU Wei-ling |
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| Affiliation: | (Key Laboratory of Universal Wireless Communications(Beijing University of Posts and Telecommunications), Ministry of Education,Beijing 100876,China) |
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| Abstract: | The multiple-input multiple-output-orthogonal frequency division multiplexing(MIMO-OFDM) system can be impaired by channels estimation error over double selective(time varying and frequency selective) Rayleigh channels.The performance for MIMO-OFDM systems in presence of channels estimation error is investigated using zero-forcing detectors over double selective Rayleigh channels.Approximation to the distribution of complex Wishart distribution is used to derive probability density function of signal-to-interference-plus-noise ratio,average error probability and outage probability of the system.The analysis is shown good by numerical simulations. |
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| Keywords: | multiple-input multiple-output-orthogonal frequency division multiplexing Wishart distribution channels estimation error |
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