Symbol Error Rate of Selection
Amplify-and-Forward Relay Systems
Yi Zhao, Raviraj Adve and Teng Joon Lim
Dept. of Electrical and Computer Engineering,
University of Toronto, M5S 3G4, Canada.
E-mail: zhaoyi, rsadve, firstname.lastname@example.org.
Cooperative diversity schemes significantly improve the performance of wireless networks by transmitting
the same information through several nodes. The amplify-and-forward (AF) relaying method is one of the most
attractive cooperative diversity schemes due to its low complexity. Selection AF relaying has recently been proven
to achieve the same diversity order as and lower outage probability than All-Participate relays. In this letter, we
present an asymptotic analysis of the symbol error rates of a selection AF network, and compare it with the
conventional all-participate scheme.
Cooperative diversity gain is available in distributed wireless networks with nodes that help each other
to relay transmissions . Amplify-and-Forward (AF) relaying is one of the most popular cooperation
protocols where the relay simply amplifies the signal received from the source and transmits the amplified
signal to the destination. It requires no decoding at relay nodes and hence is well-suited to systems with