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http://dx.doi.org/10.3745/KIPSTC.2006.13C.6.749

Performance Analysis of Adaptive Collaborative Communications in Wireless Networks  

Khuong Ho Van (울산대학교 전기 전자정보시스템공학과)
Kong Hyung-Yun (울산대학교 전기전자정보시스템공학부)
Jeong Hwi-Jae (울산대학교 전기 전자정보시스템공학과)
Publication Information
The KIPS Transactions:PartC / v.13C, no.6, 2006 , pp. 749-756 More about this Journal
Abstract
Broadcast nature of wireless medium and path-loss reduction create a favourable condition for collaborative communications (CC) among single-antenna users to gain the powerful benefits of multi-antenna system without the demand for physical arrays. This paper proposes a CC strategy adapting to the propagation environment changes by optimizing the transmit signal amplification factors to simplify the structure of maximum likelihood (ML) detector and to obtain the minimum error probability as well. The closed-form BER expression was also derived and compared to the simulation results to evaluate the performance of the suggested solution. A variety of numerical results revealed the cooperation significantly outperforms non-cooperative counterpart under flat Rayleigh fading channel plus AWGN (Additive White Gaussian Noise).
Keywords
Collaborative Communications; Optimization; Rayleigh Fading; AWGN; ML;
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