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In this paper, an enhanced differential carrier phase extraction method for carrier-suppressed wideband signal in CEI measurement is proposed. Based on Costas loop, after orthogonal transformation, low-pass filtering and phase detection, the differential carrier phase of the received signal of the two measuring stations can be obtained directly. It is more efficient comparing with the traditional...
A novel palmprint feature extraction method is proposed by using the Weight Coding Based Non-negative Sparse Coding (WCBNNSC). The WCBNNSC algorithm can model the respective field of V1 in the primary visual system of brain. And this algorithm includes more image information than the early Non-negative Sparse Coding (NNSC). Utilizing the WCBNNSC algorithm, the feature basis vectors of palmprint images...
This article develops a mathematical framework for analyzing the average bit error rate (ABER) performance of four different selection diversity combining (SDC) schemes over slow, frequency non-selective Nakagami-m fading channels. Aside from the traditional SDC, generalized selection combining (??-GSC) and 'maximum matched filter output' selection methods, two new selection rules based on choosing...
We consider the problem of estimating the central direction of arrival (DOA) of a coherently distributed source. In this paper, the integral steering vector of coherently distributed source is deduced to be a Schur-Hadamard product comprising point source steering vector and a real vector. And then a blind estimator based on second order statistics is proposed to estimate the central DOA without adopting...
We consider the problem of estimating the parameters-the central direction of arrival (DOA) and angular spread of a coherently distributed source. This problem is encountered due to the presence of local scatterers in the vicinity of a transmitter or due to signals propagating through a random inhomogeneous medium. Since the computational complexity of the parameter estimation is normally highly demanding,...
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 eigendecomposition or singular value decomposition as...
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