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Cooperative relaying takes advantage of spatial diversity to improve the performance of wireless communication systems. In theory, the larger the diversity, the more capability to combat fading. Several cooperative relaying schemes have been proposed in the past. Here we focus on timer-based-best-select, distributed space-time coded, and M-group space-time coded. In this paper, an equal transmission...
It is well known that cooperative relaying has the potential to improve the performance of wireless communication. However, compared with point-to-point communication, cooperative relaying requires much more overhead to implement. In this paper, we quantitatively analyze the overhead in implementing cooperative relaying, in particular, the overhead to acquire essential channel state information, to...
Cooperative relaying has been shown to be an effective method to combat fading in wireless communications. Among relaying strategies, distributed ones are more attractive because of the simplicity, scalability, robustness and low overhead incurred. In this paper, two previously proposed distributed relaying strategies are investigated: Timer-based Best-Select relaying and M-group Dis-STBC All-Select...
Joint power allocation, relay selection, and sub-carrier assignment are critical and challenging for achieving full benefits of OFDM based cooperative relay networks. In this paper, we study such a problem in a dual-hop multi-relay OFDM system with an objective of maximizing the spectral efficiency under a total power constraint. The system consists of a pair of source and destination and multiple...
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