Relay selection for AF wireless relay networks in adverse communication environments

This paper addresses wireless relay networks consisting of a one-source-one-destination pair and N noncooperative relays. An objective of this paper is to analytically derive a closed form of an optimal relay amplifying vector (or matrix) for an amplify-and-forward (AF) wireless relay network under channel uncertainty (CU), jamming, and transmission power constraints at the relays, using the minimum mean square error (MMSE) criterion. In addition, this paper presents an efficient relay-selection strategy using the maximum SNR and minimum MMSE cost function criterions under an adverse wireless communication environment with transmission power constraint at the relays.