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In order to improve the performance of equalization algorithm for joint blind equalization and carrier recovery in underwater acoustic channel, a modified super-exponential algorithm is proposed by substituting the constant modulus error of super-exponential iteration algorithm (SEI) with a square contour error in the fractionally spaced system. The proposed algorithm combines the fast convergence...
In order to compensate current harmonic in power system, a direct harmonic analysis algorithm, which was based on Fourier transform, was designed to identify and track harmonics. Compared with traditional FFT, the proposed algorithm was less dependent on hardware and could be used to for selective harmonic compensation. In order to improve the current tracking accuracy and compensation precision,...
To improve the performance of the blind equalizer in alpha-stable noise environments, a robust constant modulus blind equalization algorithm is proposed. The error function of the original algorithm is improved and nonlinearly transformed, thus the affection of alpha-stable noise is effectively suppressed. Using shallow water acoustic channel, computer simulations were performed under Gaussian and...
This paper studies identification problems for two-input multirate systems with colored noises (The method in the paper can be easily extended to multi-input multirate systems). The state-space models are derived for the multirate systems with two different input sampling periods and furthermore the corresponding transfer functions are obtained. To solve the difficulty of identification models with...
The fast affine projection (FAP) algorithm is widely used in many applications for its advantages of low computational complexity and high convergence rate. The acoustic echo cancellation (AEC) system is one of the typical applications. In this paper, a novel system of subband AEC (SAEC) based on FAP algorithm is proposed. The proposed SAEC structure employs several subband adaptive filters to determine...
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