EM-Based Vector Channel Estimation and Symbol Detection by Using Decision Window in MIMO-CDMA Systems
碩士 === 國立臺北科技大學 === 電腦與通訊研究所 === 93 === We consider multiuser MIMO DS-CDMA systems where each user has multiple transmitter antennas and different antennas of the same user use the same spreading code. We propose a novel adaptive vector channel estimation and decision-window-based symbol detection m...
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| Format: | Others |
| Language: | en_US |
| Published: |
2005
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| Online Access: | http://ndltd.ncl.edu.tw/handle/vev7r8 |
| Summary: | 碩士 === 國立臺北科技大學 === 電腦與通訊研究所 === 93 === We consider multiuser MIMO DS-CDMA systems where each user has multiple transmitter antennas and different antennas of the same user use the same spreading code. We propose a novel adaptive vector channel estimation and decision-window-based symbol detection method. Compared to the previous scheme, the proposed adaptive method can be applied to the channel with time varying or non-time varying Doppler shift and reduces the length of training sequence. The proposed decision-window-based symbol detection method reduces decision ambiguity among transmitted symbols from different antennas of the desired user. Computer simulations show the improvement of our proposed method.
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