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Future handsets are characterized by their small size which limits the number of antennas and the spacing between them. This paper mainly focuses on Direction-of-Arrival (DOA) estimation in Multiple-Input-Multiple-Output (MIMO) systems based on Compressive Sensing (CS) with practical limitations. The main objective is to strike an optimal balance between complexity and accuracy. A comparison between...
This paper addresses the research question on how digital beamsteering algorithms can be combined with analog beamforming in the context of millimeter-wave communication for next generation (5G) cellular systems. Key is the use of coarse quantisation of the individual antenna signals next to the analog beamforming. The extreme case of single bit quantization is analyzed. Direction-of-Arrival (DoA)...
Smart antenna technology is a key technology adopted in TD-SCDMA communication system. There are two main functions of smart antenna, including DOA estimation and beamforming. It is usually difficult to implement the function of smart antenna directly in TD-SCDMA system simulation in OPNET, which is a network simulation tool suited for system level simulation. In this paper, two simulation methods...
In this paper, we consider the problem of using space-time adaptive processing (STAP) in ground-based rotating radars, in the case where no jamming alone reference is available. Thus, we propose the use of a STAP algorithm, in which adaptive processing is applied in beam post-Doppler space. First, we give design rules for the implementation of this processing, after considering two cases depending...
The current antenna systems have limited capacity when it comes to the frequency usage. Smart antennas provide a smart solution to this problem by steering the beam power in the desired direction and pointing nulls in the undesired direction. Genetic Algorithm is an optimization algorithm which mimics the underlying phenomenon of evolution of natural species and genetic recombination. In this paper...
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