Title :
Relay Selection Schemes and Performance Analysis Approximations for Two-Way Networks
Author :
Atapattu, Saman Udaya Bandara ; Yindi Jing ; Hai Jiang ; Tellambura, C.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Alberta, Edmonton, AB, Canada
Abstract :
This paper studies relay selection schemes for two-way amplify-and-forward (AF) relay networks. For a network with two users that exchange information via multiple AF relays, we first consider a single-relay selection (SRS) scheme based on the maximization of the worse signal-to-noise ratio (SNR) of the two end users. The cumulative distribution function (CDF) of the worse SNR of the two users and its approximations are obtained, based on which the block error rate (BLER), the diversity order, the outage probability, and the sum-rate of the two-way network are derived. Then, with the help of a relay ordering, a multiple-relay selection (MRS) scheme is developed. The training overhead and feedback requirement for the implementation of the relay selection schemes are discussed. Numerical and simulation results are provided to corroborate the analytical results.
Keywords :
amplify and forward communication; diversity reception; error statistics; interference suppression; relay networks (telecommunication); AF relay network; BLER; CDF; MRS scheme; SNR; SRS scheme; block error rate; cumulative distribution function; diversity order; multiple AF relay; multiple-relay selection; outage probability; relay ordering; relay selection scheme; signal-to-noise ratio; single-relay selection; sum-rate; two-way amplify-and-forward relay network; Approximation methods; Error analysis; Performance analysis; Relays; Signal to noise ratio; Training; Diversity order; error rate; outage probability; relay selection; sum-rate; two-way networks;
Journal_Title :
Communications, IEEE Transactions on
DOI :
10.1109/TCOMM.2012.010313.100669
