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| Multi-hop Alamouti Amplify and Forward Cooperative Scheme Based on Phase Rotation |
| Tian Xin-ji Yuan Chao-wei Hu Zi-wei Li Lin |
| School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China |
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Abstract The Channel State Information (CSI) is not taken into consideration in Multi-Hop Alamouti Amplify and Forward (AAF-MH) cooperation protocol. For this issue, Multi-Hop Alamouti Amplify and Forward with Phase Rotation (AAF-MH-PR) cooperative scheme is proposed, in which the effective channel matrix is changed by applying a proper rotation at transmitted signals of partial relay. Theoretical analysis shows that the reliability of AAF-MH-PR is significantly better than that of AAF-MH. Simulation demonstrats the validity of theoretical analysis and the proposed scheme provides a 5 dB gain at a Symbol Error Rate (SER) of 10-5 over AAF-MH with only 1 bit feedback amount.
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Received: 31 August 2010
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Corresponding Authors:
Yuan Chao-wei
E-mail: yuancw2000@bupt.edu.cn
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2011, Vol. 33 
