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Interrupted reporting has recently been introduced as an effective method to increase the energy efficiency of cooperative spectrum sensing schemes in cognitive radio networks. In this paper, joint optimization of the reporting and fusion phases in a cooperative sensing with interrupted reporting is considered. This optimization aims at finding the best weights used at the fusion center to construct...
Detection of the number of signals is a key issue in array signal processing. In the case of small number of snapshots, the performance of Akaike Information theoretic Criteria (AIC) and Maximum Description Length (MDL) will deteriorate due to the large estimation error of covariance matrix of observed data. In this paper a new method for detecting the number of signals based on Multi-Stage Wiener...
We evaluate all the real and complex zeros λ1,...,λn of an n-th degree univariate polynomial with the relative precision 1/2nc for a given positive constant c. If for all g,h, log |λg/λh-1| ≥ 1/2O(n) unless λg = λh, then we need O(n3log2n) arithmetic operations or O(n2log n) steps, n log n processors. O(n2log n) operations or O(n log n) parallel steps, n processors suffice if either all the zeros...
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