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| Studies on Space-Time Block Coded Cooperative Communication System |
| Luo Tao; Li Xiang-ming; Wang Jian-kang; Yue Guang-xin |
| School of Telecommunications Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China |
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Abstract A communication system With Cooperative Communication based on Space-Time Block Coding (WCC-STBC) is proposed in this paper. A closed-form expression of bit error ratio for WCC-STBC system is also derived. The results through computer Monte Carlo simulation show that the diversity gain, which is dependent on the characteristics of the user’s individual channel and the cooperative channel between them, can be gotten in the WCC-STBC system. When BER is 10-3, and if the cooperative channel between them is 5dB better than their individual’s, about 3dB gain could be gotten in WCC-STBC system; and if one user’s channel is 5dB better than his partner’s, 5dB gain for the performance of the worse user could be improved while that of the better one is less loss, only about 0.5dB or so.
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Received: 13 February 2006
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2007, Vol. 29 
