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 · 2012
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.