Cyclostationarity: half a century of research
Signal Processing
NeXt generation/dynamic spectrum access/cognitive radio wireless networks: a survey
Computer Networks: The International Journal of Computer and Telecommunications Networking
An efficient quiet period management scheme for cognitive radio systems
IEEE Transactions on Wireless Communications
Asymptotic efficiency of a sequential multihypothesis test
IEEE Transactions on Information Theory - Part 2
Detection of stochastic processes
IEEE Transactions on Information Theory
Cyclostationary Signatures in Practical Cognitive Radio Applications
IEEE Journal on Selected Areas in Communications
Cooperative sensing via sequential detection
IEEE Transactions on Signal Processing
Spectrum Sensing Based on Antenna Correlation in Cognitive Radio Systems
Wireless Personal Communications: An International Journal
Hi-index | 0.01 |
The cyclostationary feature detector is a viable candidate for a primary user (PU) detection method of the cognitive radio (CR) system. However, it requires very long detection time, which leads to inefficient spectrum utilization. To reduce the detection time, we propose to apply the sequential detection framework to the cyclostationary feature detector. Unfortunately, a straightforward application cannot achieve a sufficient gain, which is expected with the sequential detection. To solve this problem, we design a novel detector, taking account of the cyclic phase of the cyclostationary signal. The simulation results show that the proposed detector reduces the average detection time almost in half. The proposed detector can well be applied to the CR systems that operate in the frequency bands, where the PUs have long interarrival and sojourn time. For example, the CR systems equipped with the proposed detector can efficiently exploit the white space in the VHF/UHF TV bands.