Noise enhancement and SNR equivalence in Bernoulli nonuniform sampling
Document typeConference report
Rights accessRestricted access - publisher's policy
This paper addresses the problem of nonuniform spectral analysis and spectrum sensing by means of Bernoulli sampling. The statistical treatment of sampling shows that nonuniformly sampling below the Nyquist rate produces in average the e ects of noise enhancement and power loss on the second-order statistics of the signal (correlation and spectrum). The main focus of the paper is to obtain an equivalence in terms of signal-to-noise ratio (SNR) to model the noise enhancement and power loss effects. The Bernoulli nonuniform sampling is further extended to matrix formulation, which allows the application of spectrum sensing for cognitive radio signal detection. Numerical results assess the noise enhancement eff ect and SNR equivalence in spectral analysis and spectrum sensing.
CitationFont-Segura, J.; Vazquez, G.; Riba, J. Noise enhancement and SNR equivalence in Bernoulli nonuniform sampling. A: International Conference on Cognitive Radio and Advanced Spectrum Management. "4rt International Conference on Cognitive Radio and Advanced Spectrum Management". Barcelona: 2011, p. 1-5.