Detection of Signals in Noise
Handbook of Mathematical Functions, With Formulas, Graphs, and Mathematical Tables,
Handbook of Mathematical Functions, With Formulas, Graphs, and Mathematical Tables,
Dynamic spectrum access -- concepts and future architectures
BT Technology Journal
Cognitive PHY and MAC layers for dynamic spectrum access and sharing of TV bands
TAPAS '06 Proceedings of the first international workshop on Technology and policy for accessing spectrum
Clear channel assessment in energyconstrained wideband wireless networks
IEEE Wireless Communications
On acquisition of wideband direct-sequence spread spectrum signals
IEEE Transactions on Wireless Communications
Analysis of dynamic spectrum access with heterogeneous networks: benefits of channel packing scheme
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
A cognitive communication based wide-area monitoring system of smart grid
Multiagent and Grid Systems
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Dynamic spectrum access (DSA) is a promising approach for the more effective use of existing spectrum. Of fundamental importance to DSA is the need for fast and reliable spectrum sensing over a wide bandwidth. A model for two-stage sensing is described based on an analysis of the mean time to detect an idle channel. Simulation results show that it provides significantly faster idle channel detection than conventional single-stage random searching. Several system-level issues are also investigated including the settling time of the phase-locked loop (PLL) in the frequency synthesizer, which determines the channel switching time. Effects of the bandwidth of the coarse sensing block and the integration duration of the energy detector are also presented.