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Smart grid integrates the latest advances in information and communication technologies to contribute to a more reliable and efficient electricity system. By realizing the two-way communication between the utility and the smart meters in the houses, smart grid enables a time-of-use tariff to reduce peak load through incenting residents to adopt a more(More)
Two-way seamless communication is the key aspect of realizing the vision of smart grid. Reliable and real-time information becomes the key factor for reliable delivering of power from the generating units to the end-users. Given the smart grid use cases, this article is focused on proposing a cognitive based communication paradigm. The proposal is related(More)
Spectrum sensing is a fundamental requirement in cognitive radio (CR) networks. In this paper, a novel spectrum sensing scheme based on energy detection is presented which enables a significant reduction in the number of samples. The sensing process involves several stages and each stage employs two thresholds that are adjusted according to the number of(More)
The structure of block sparsity in multi-band signals is prevalent. Among the block-sparse signal problems for compressive sensing, the most presenting recovery algorithms require block sparsity as prior information, whereas it may not be available in many practical applications. In this paper, a block sparsity adaptive regularized orthogonal matching(More)
Beamspace propagator method is suggested to estimate the central direction of arrival and angular spread for distributed source jointly. Especially for coherently distributed source, when the deterministic angular signal density is uniform, the nominal steering vector is deduced to subject to Vandermonde matrix. The proposed method is a possible alternative(More)
In MIMO channel, the presence of scatters results in angular spread. The point source model corresponding to discrete direction of arrival (DOA) becomes restrictive and leads to DOA estimation errors. To compensate for this effect, the distributed source model is proposed. In this paper, the coherently distributed source model is analysed. Based on that(More)
A computationally efficient method for 2D direction-of-arrival (DOA) estimation of coherently distributed source is presented. The key idea is to construct second-order statistics calculated analytically based on the Schur-Hadamard product steering vector. So a closed form solution to 2D DOA estimation can be derived, which does not involve any(More)
—In this paper, the problem of estimating the central direction of arrival (DOA) of coherently distributed source impinging upon a uniform linear array is considered. An efficient method based on the support vector regression is proposed. After a training phase in which several known input/output mapping are used to determine the parameters of the support(More)
—Cognitve radar can be aware of its environment, utilize intelligent signal processing, provide feedback from the receiver to the transmitter for adaptive illumination and preserve the information contents of radar returns. In this paper, based on the analysis of the parameters of radar mesurements, range-Doppler resolution cell is built up, then stochastic(More)