| MIMO-OFDM channel estimation method utilizing correlation in time domain for B3G-TDD uplink |
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| 作者姓名： | ZHOU Ming-yu LI Li-hua JIANG Jun ZHONG Ming-hua TAO Xiao-feng Wireless Technologies Innovation Institute Beijing University of Posts and Telecommunications Beijing China |
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| 作者单位： | ZHOU Ming-yu，LI Li-hua，JIANG Jun，ZHONG Ming-hua，TAO Xiao-feng Wireless Technologies Innovation Institute，Beijing University of Posts and Telecommunications，Beijing 100876，China |
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| 基金项目： | 国家高技术研究发展计划(863计划);国家自然科学基金 |
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| 摘 要： | This article proposes a simple pilot-aided channel estimation method based on correlation in time domain for multiple-input and multiple-output orthogonal frequency division multiplexing (MIMO-OFDM) systems. Pilot symbols in all transmit antennas are generated from different circular shifting of a certain sequence. Through once correlation, the receiver can obtain time-domain pulse responses for channel fading from all transmit antennas to a certain receive antenna, from which channel estimation in frequency domain can be obtained. Beyond 3G time-division duplex (B3G-TDD) uplink is introduced, and the channel estimation method is used in it. Theoretical analysis and simulation are both carried out. Mean square error (MSE) performance shows that the method can exhibit precise estimation. Complexity analysis proves it requires very low complexity. System simulation result shows that it guarantees the performance of B3G-TDD uplink very well.
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| 收稿时间： | 1 November 2006 |
MIMO-OFDM channel estimation method utilizing correlation in time domain for B3G-TDD uplink |
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| ZHOU Ming-yu,LI Li-hua,JIANG Jun,ZHONG Ming-hua,TAO Xiao-feng Wireless Technologies Innovation Institute,Beijing University of Posts and Telecommunications,Beijing ,China.MIMO-OFDM channel estimation method utilizing correlation in time domain for B3G-TDD uplink[J].The Journal of China Universities of Posts and Telecommunications,2007,14(2):23-27. |
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| Authors: | ZHOU Ming-yu LI Li-hua JIANG Jun ZHONG Ming-hua TAG Xiao-feng |
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| Affiliation: | Wireless Technologies Innovation Institute, Beijing University of Posts and Telecommunications, Beijing 100876, China |
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| Abstract: | This article proposes a simple pilot-aided channel estimation method based on correlation in time domain for multiple-input and multiple-output orthogonal frequency division multiplexing (MIMO-OFDM) systems. Pilot symbols in all transmit antennas are generated from different circular shifting of a certain sequence. Through once correlation, the receiver can obtain time-domain pulse responses for channel fading from all transmit antennas to a certain receive antenna, from which channel estimation in frequency domain can be obtained. Beyond 3G time-division duplex (B3G-TDD) uplink is introduced, and the channel estimation method is used in it. Theoretical analysis and simulation are both carried out. Mean square error (MSE) performance shows that the method can exhibit precise estimation. Complexity analysis proves it requires very low complexity. System simulation result shows that it guarantees the performance of B3G-TDD uplink very well. |
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| Keywords: | multiple-input and multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) channel estimation time-domain pulse response |
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