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The convex combination of two momentum term based algorithms with different momentum factors is an effective solution to highlight the tradeoff between convergence rate and steady-state error of a blind source separation system. As the smoothing factor is chosen in the range from 0 to 1, however, the performance of this convex combination is restricted. In this paper, a novel variable smoothing factor...
The estimation of the a priori signal-to-noise ratio (SNR) is a very significant issue for many speech enhancement algorithms. The widely-used decision-directed (DD) algorithm largely depresses the musical noise, but the estimated a priori SNR suffer from one frame delay which results in the degradation of speech quality. In this paper, we propose a novel algorithm to a priori SNR estimation which...
A low-complexity, joint frequency offset and carrier phase estimation algorithm based on QPSK partitioning is proposed for dual-polarization 16-ary quadrature-amplitude-modulation.
Cloud estimation of distribution particle swarm optimizer combining PSO and cloud model is introduced. In the algorithm's offspring generation scheme, new particles are generated in the cloud estimation of distribution way or in the PSO way. The innovation of the algorithm is production of cloud particles according to the cloud model theory. The cognitive population obtained during optimization is...
It is well know that microwave fading channel is a complicated channel. This channel may cause inter-symbol interference(ISI) ,channel equalization is a good way to deal with ISI. Taking advantage of the achievements of past researchers. We combine them into a novel improved max-log-map turbo equalization method. The simulation results based on a given microwave fading channel show that the improved...
Combining higher order statistics that can identify non-minimum phase system with shift block method of blind separation (SHIBBS) algorithm which is good in separation and moderate amount of computation, an algorithm was proposed to identify and separate mixed sources for muti-input and muti-output (MIMO) system in frequency domain. However, the received signals have some disadvantages such as the...
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