Name
Abstract | ||
|---|---|---|
In cognitive radio networks, spectrum sensing and access scheme affects the system performance. In this paper, a new wideband mixed access scheme is proposed, in which the Secondary Users (SUs) sense the channels via wideband spectrum sensing, and access them with a mixed access strategy. In order to maximize the ergodic throughput of SUs, we find optimal sensing time and transmission power of each channel, while protecting the Primary Users (PUs) from interference. It is shown that the optimization problem can be formulated as a convex problem. Moreover, we present a QoS-aware low complexity scheme, in which the SUs select several specific channels to sense. An effective sensing channels selection criterion is proposed. Numerical results show that the proposed schemes can effectively improve the system performance. |
Year | DOI | Venue |
|---|---|---|
2012 | 10.1109/WCNC.2012.6213974 | WCNC |
Keywords | Field | DocType |
cognitive radio networks,secondary users,convex problem,wideband spectrum sensing,qos-aware low complexity scheme,mixed access,quality of service,cognitive radio,pu,system performance,convex programming,effective sensing channels selection criterion,transmission power,optimization problem,optimal wideband mixed access strategy algorithm,optimal sensing time,su,spectrum sensing,throughput,primary users,cognitive radio network | Wideband,Computer science,Computer network,Quality of service,Communication channel,Interference (wave propagation),Throughput,Convex optimization,Optimization problem,Cognitive radio | Conference |
Volume | Issue | ISSN |
null | null | 1525-3511 |
ISBN | Citations | PageRank |
978-1-4673-0436-8 | 1 | 0.35 |
References | Authors | |
11 | 5 | |