In cognitive radio (CR) networks, the radio access from opportunistic users depends on their capabilities to detect spectrum holes. Typically, the detection problem has been considered separately from the optimization of the transmission strategy. However, the detection phase has a direct impact on the overall network efficiency. Hence, in this work we propose a game theoretic set-up where each secondary user (player) competes against the others to maximize his own opportunistic throughput, under a constraint on the interference generated towards the primary users. Each secondary user optimizes his own throughput by choosing, jointly, the detection thresholds and the vector power allocation over a multichannel link.
Joint optimization of detection thresholds and power allocation in multiuser wideband cognitive radios
Sardellitti S;
2009-01-01
Abstract
In cognitive radio (CR) networks, the radio access from opportunistic users depends on their capabilities to detect spectrum holes. Typically, the detection problem has been considered separately from the optimization of the transmission strategy. However, the detection phase has a direct impact on the overall network efficiency. Hence, in this work we propose a game theoretic set-up where each secondary user (player) competes against the others to maximize his own opportunistic throughput, under a constraint on the interference generated towards the primary users. Each secondary user optimizes his own throughput by choosing, jointly, the detection thresholds and the vector power allocation over a multichannel link.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
