Cooperative diversity in wireless networks: Efficient protocols and outage behavior
IEEE Transactions on Information Theory
Cooperative communication in wireless networks
IEEE Communications Magazine
Space-time block coding for wireless communications: performance results
IEEE Journal on Selected Areas in Communications
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Cooperative transmission is an efficient solution to improve the performance of wireless communications over fading channels without the need for physical colocated antenna arrays. In this paper, we propose a novel cooperative transmission scheme with amplify-and-forward relay which can obtain the diversity order of 3. Its closed-form bit error rate (BER) expression is also derived and confirmed by Monte-Carlo simulations. A variety of simulated and numerical results show that the proposed scheme saves a significant amount of consumed power compared to direct transmission subject to the same BER performance and bandwidth efficiency.