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Cognitive Fixed-Gain Amplify-and-Forward Relay Networks under Interference Constraints
Dac-Binh HA Vo Nguyen Quoc BAO Xuan-Nam TRAN Tuong-Duy NGUYEN
IEICE TRANSACTIONS on Communications
Publication Date: 2013/01/01
Online ISSN: 1745-1345
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Wireless Communication Technologies
spectrum sharing, cognitive radio, fixed-gain (FG), amplify-and-forward (AF), relay networks, selection diversity,
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In this work, we analyze the performance of cognitive amplify-and-forward (AF) relay networks under the spectrum sharing approach. In particular, by assuming that the AF relay operates in the semi-blind mode (fixed-gain), we derive the exact closed-form expressions of the outage probability for the cognitive relaying (no direct link) and cognitive cooperative (with direct link) systems. Simulation results are presented to verify the theoretical analysis.