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We propose sensing protocols for a cognitive dual-hop relay system where transmission from source (S) to destination (D) is accomplished over two phases with the assistance of a relay (R). A naive sensing protocol is to perform sensing at S and R before the respective transmission phase. This leads to substantial loss in spectral efficiency. We propose a sensing protocol where sensing is only performed...
An approach based on second order cone programming (SOCP) is proposed to the optimum beamforming of non-uniform linear array (NULA). The approach designs the optimum beamforming according to control sidelobe and improves the problem that the Chebychev methods can only be used in the optimum beamforming of uniform linear array(ULA). The GUI(graphical user interfaces) of the MATLAB is applied to computer...
This paper proposes an LCL-filter-based hybrid active power filter for harmonic mitigation of a 10/0.4 kV residential distribution system. Adaptive linear neuron network (ADALINE) is applied for individual harmonic component extraction from distorted nonlinear load currents, and the estimated signals are used for the selective harmonic elimination (SHE) purpose in the current-loop controller. A robust...
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