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In recent years there has been a growing interest in sparse representation of signals based on overcomplete dictionaries. Selecting few atoms that best match the signal structure, the signal is described by linear combination of these atoms. In this paper, we propose a novel overcomplete dictionary design algorithm for sparse representation of piecewise stationary signals. An effective and easy-to-use...
Cognitive radio has been proposed recently as the means to improve spectrum utilization, where the cognitive users (also referred to as secondary users) are permitted to share spectrum resource with the primary user. In this paper, we investigate the spectrum sensing by using cooperative diversity in multiple-user cognitive radio networks. A novel cooperative spectrum sensing scheme based on the best...
The quantum multi-user detection technique with quantum detection under quantum multiple-access channel is a promising field in communications, it has promised an efficient solution to the NP hard problem in conventional optimal solution of multi-user detection. In this paper, a solution of multi-user detection in multi-access quantum channel based on the quantum square-root measurement is proposed,...
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