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| THE SPACE-TIME CHANNEL IMPULSE RESPONSE ESTIMATION AND TRACKING FOR CDMA |
| Jiang Bofeng; Wang Wenjie; Yan Qinye |
| Information Engineering Institute Xi an Jiaotong University Xi an 710049 China |
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Abstract Space-time channel can be described by Vector Channel Impulse Response (VCIR). Estimating and tracking the time varying VCIR is very important for smart antenna systems. In this paper an estimation and tracking method has been proposed. In this method, subspace technology has been used to estimate the VCIR, and approximate subspace tracking technology has been used to track the time varying VCIR. The tracking process has low computation burden. The computer simulation demonstrates that the VCIR tacking speed and accuracy can meet the need of smart antenna systems.
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Received: 19 October 1999
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2001, Vol. 23 
