Spectrum Sensing Using Multi-Resolution Spectrum Analysis

Spectrum sensing is one of the key technologies of cognitive radio.Usually the spectrum sensing in wideband results as high complexity.The spectrum sensing principle and method using multi-resolution spectrum analysis are discussed in this paper.A dynamical selection method of the detection threshold is presented.The effect of spectrum analysis parameters on the spectrum sensing is simulated in detail.The detection performance of spectrum is also simulated.This approach can find spectrum holes in wideband rapidly and reliability,and is easy implemented with low complexity.