… In this paper, we introduce a relay beamforming approach for … Our system model consists
of static relays deployed in … optimal relay selection and distributed cooperative beamforming …

… we use cooperative beamforming or user selection techniques … , while [25] does not use
cooperative nodes, and [26] does … either cooperative beamforming or user selection only. To …

… then reoptimize power for the assigned relays. From the above … designs of the beamforming
and relay selection have not been … beamforming and relay selection in multi-user multi-relay …

… for cooperative beamforming (BF) and relay selection in CR networks, where a pair of secondary
users communicates with each other assisted by some multiple antenna relay … of relay …

… Using beamforming, the authors of [3] and [9] proposed to use multiple-relay selection
and … The DF networks with cooperative beamforming among relays can be regarded as a …

… at the relays and the interference power constraints at the primary users. In our proposed
scheme, the relay selection and beamforming … relay beamforming schemes and relay selection …

… In each block, we solve the joint multi-relay selection, power allocation and beamformer
design problem based on the current channels. All the results were obtained by averaging over …

… -power relays have been previously investigated, this paper addresses the collaborative
use of variable-phase variable-power amplify-and-forward (AF) relays for robust beamforming, …

… tive beamforming. Hence, we propose combined relay selection and cooperative beamforming
schemes, where only two of the available relays are selected for beamforming and data …

… to obtain the corresponding relay beamforming weights. Since the number of relays is often
… data-driven based joint relay selection and cooperative beamforming scheme. The Section …