6533b7d8fe1ef96bd1269721

RESEARCH PRODUCT

A Multi-Phase Decode-and-Forward Transmission Protocol in Cognitive Relay Networks: Outage Analysis and Relay Power Allocation

Frank Y. LiYing WangWenxuan Lin

subject

Link Access Procedure for Frame Relaybusiness.industryComputer scienceComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKSData_CODINGANDINFORMATIONTHEORYlaw.inventionPower (physics)RelaylawComputer Science::Networking and Internet ArchitectureUnderlayTransmission protocolbusinessDecoding methodsRelay channelComputer Science::Information TheoryCommunication channelRayleigh fadingComputer network

description

Consider an underlay cognitive relay network with multiple source and destination pairs and that a decode-and-forward scheme is adopted at the relay. We propose a multi-phase transmission protocol in this paper which involves cooperation among source, relay and destination nodes. Given perfect interference elimination before decoding at the destination nodes, we derive closed-form expressions for outage probability calculation over Rayleigh fading channels. Furthermore, the optimal relay power allocation factor which leads to minimal outage probability is determined. Numerical results reveal the conditions under which satisfactory performance can be achieved based on the proposed scheme.

yearjournalcountryeditionlanguage
2015-05-012015 IEEE 81st Vehicular Technology Conference (VTC Spring)
https://doi.org/10.1109/vtcspring.2015.7145626