On the design of opportunistic cooperative transmission strategies with partial CSI information
Ding, Z., Ratnarajah, T., Gong, Y. and Cowan, C.F.N. (2008) On the design of opportunistic cooperative transmission strategies with partial CSI information. In: IEEE Vehicular Technology Conference 2008 (VTC Spring 2008), Singapore.
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To link to this article DOI: 10.1109/VETECS.2008.134
The aim of this paper is to study the impact of channel state information on the design of cooperative transmission protocols. This is motivated by the fact that the performance gain achieved by cooperative diversity comes at the price of the extra bandwidth resource consumption. Several opportunistic relaying strategies are developed to fully utilize the different types of a priori channel information. The information-theoretic measures such as outage probability and diversity-multiplexing tradeoff are developed for the proposed protocols. The analytical and numerical results demonstrate that the use of such a priori information increases the spectral efficiency of cooperative diversity, especially at low signal-to-noise ratio.