| SUBSPACE METHOD FOR BLIND IDENTIFICATION OF CDMA TIME—VARYING CHANNELS |
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| 引用本文： | LiuYulin PengQicong. SUBSPACE METHOD FOR BLIND IDENTIFICATION OF CDMA TIME—VARYING CHANNELS[J]. 电子科学学刊(英文版), 2002, 19(1): 61-67. DOI: 10.1007/s11767-002-0010-6 |
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| 作者姓名： | LiuYulin PengQicong |
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| 作者单位： | SchoolofCommunicationandInformationEngineering,USETofChina,Chengdu610054 |
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| 摘 要： | A new blind method is proposed for identification of CDMA Time-Varyin(TV) channels in this paper.By representing the TV channel‘s impulse responses in the delay-Doppler spread domain, the discrete-time canonical model of CDMA-TV systems is developed and a subspace method to identify blindly the Time-Invariant(TI) coordingates is proposed.Unlike existing basis expansion methods, this new algorithm does not require estimation of the base frequencies, neither need the assumption of linearly varying delays across symbols.The algorithm offers definite explanation of the expansion coordinates.Simulation demonstrates the effectiveness of the algorithm.
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| 关 键 词： | CDMA 时变信道 盲鉴证 子空间法 移动通信 多普列效应 |
Subspace method for blind identification of CDMA time-varying channels |
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| Yulin Liu,Qicong Peng. Subspace method for blind identification of CDMA time-varying channels[J]. Journal of Electronics, 2002, 19(1): 61-67. DOI: 10.1007/s11767-002-0010-6 |
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| Authors: | Yulin Liu Qicong Peng |
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| Affiliation: | School of Communication and Information Engineering, UEST of China, Chengdu 610054 |
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| Abstract: | A new blind method is proposed for identification of CDMA Time-Varying (TV) channels in this paper. By representing the TV channel's impulse responses in the delay-Doppler spread domain, the discrete-time canonical model of CDMA-TV systems is developed and a subspace method to identify blindly the Time-Invariant (TI) coordinates is proposed. Unlike existing basis expansion methods, this new algorithm does not require estimation of the base frequencies, neither need the assumption of linearly varying delays across symbols. The algorithm offers definite explanation of the expansion coordinates. Simulation demonstrates the effectiveness of the algorithm. |
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| Keywords: | CDMA Time-varying channels Blind identification Delay-Doppler spread domain Subspace method |
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