On the Performance of Opportunistic Cooperative Wireless Networks
Zhiguo Ding, Yu Gong, Tharmalingam Ratnarajah, Colin F. N. Cowan · IEEE Transactions on Communications · 2008
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 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.