Mobility

On the Capacity of Multiple Cognitive Links Through CommonRelay Under Spectrum-Sharing Constraints

Date Added: Apr 2011
Format: PDF

In this paper, the authors consider an underlay cognitive relaying network consisting of multiple secondary users and introduce a cooperative transmission protocol using a common relay to help with the communications between all secondary source-destination pairs for higher throughput and lower realization complexity. A whole relay-assisted transmission procedure is composed of multiple access phase and broadcast phase, where the relay is equipped with multiple antennas, and the secondary sources and destinations are single-antenna nodes. Considering the spectrum-sharing constraints on the secondary sources and the relay, they analyze the capacity behaviors of the underlay cognitive relaying network under study.