| Turbo编码V-BLAST MIMO-OFDM系统中的联合迭代判决反馈信道估计与检测 |
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| 引用本文： | 乔晓强,蔡跃明,徐信,徐友云.Turbo编码V-BLAST MIMO-OFDM系统中的联合迭代判决反馈信道估计与检测[J].通信学报,2006,27(1):103-108. |
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| 作者姓名： | 乔晓强 蔡跃明 徐信 徐友云 |
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| 作者单位： | 1. 解放军理工大学,通信工程学院,江苏,南京,210007;总参第63研究所,江苏,南京,210007
2. 解放军理工大学,通信工程学院,江苏,南京,210007 |
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| 基金项目： | 国家科技攻关项目;江苏省自然科学基金 |
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| 摘 要： | 针对Turbo编码V-BLAST MIMO—OFDM系统，提出了一种联合迭代判决反馈信道估计与检测方案，该方案将Turbo迭代译码与最小二乘（LS，least square）信道估计相结合，充分利用Turbo迭代译码后的信息位和校验位软值信息来改善信道估计性能。仿真结果表明，该方案不仅纠正了低信噪比时的差错传播问题，还使得整个系统的信道估计性能得到进一步提高，且适合于非常恶劣的信道环境。
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| 关 键 词： | 信道估计 Turbo迭代译码 V-BLAST信号检测 |
| 文章编号： | 1000-436X(2006)01-0103-06 |
| 修稿时间： | 2005年1月20日 |
Joint iterative decision feedback channel estimation and detection for Turbo coded V-BLAST MIMO-OFDM systems |
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| QIAO Xiao-qiang,CAI Yue-ming,XU Xin,XU You-yun.Joint iterative decision feedback channel estimation and detection for Turbo coded V-BLAST MIMO-OFDM systems[J].Journal on Communications,2006,27(1):103-108. |
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| Authors: | QIAO Xiao-qiang CAI Yue-ming XU Xin XU You-yun |
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| Abstract: | For Turbo coded V-BLAST MIMO-OFDM systems,a joint iterative decision feedback channel estimation and detection scheme were presented,which combined the Turbo iterative decoding with least square channel estimation,and made full use of the soft systematic bits and soft parity bits of Turbo iterative decoding to improve the channel estimation performance.The simulation results showed that not only the error propagation was corrected at low signal-noise-ratio but also the channel estimation performance of the whole system was improved greatly.Furthermore,the scheme is applicable for very bad channel environments. |
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| Keywords: | MIMO-OFDM |
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