Athanassios Manikas

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In this paper, a novel source/target localization approach is proposed using a number of sensors (surrounding or not surrounding one or more sources) to form a sparse large aperture array of known geometry. Under a large array aperture, the array response (manifold vector) obeys a spherical wave rather than a plane wave propagation model. By rotating the(More)
In this paper, the problem of ambiguities inherent in the manifold of any linear array structure is investigated. Ambiguities, which can be classified into trivial and nontrivial, depending on the ease of their identification, arise when an array cannot distinguish between two different sets of directional sources. Initially, the new concept of an ambiguous(More)
In this paper, an asynchronous, multicarrier directsequence code-division multiple-access (DS-CDMA) array receiver is proposed based upon blind, composite channel vector estimation. Due to the fact that the combined effect of all received paths is estimated, the total number of paths can be greater than the number of antennas in the receiver array.(More)
In this paper, an innovative beamforming-type approach for suppressing cochannel interference in mobile radio networks is introduced. This approach combines a super-resolution direction and power profile finding algorithm, together with a signal subspace-type broad null beamformer which can steer both sharp and controlled broad nulls in the appropriate(More)
Mobility enables numerous functionalities in wireless sensor networks (WSN's) including coverage optimization, network self-healing and adaptive resource management. In this paper, a novel wireless array-based sensor relocation (WA-SR) algorithm is proposed based on the cooperative sensing model, WA-CSM, presented in [4]. The WA-CSM model improves the(More)