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The quantization of block DCT coefficients is too coarse, and will result in much non-uniform artifacts, therefore, blocking and ring artifacts are usually visible in reconstructed video frames especially when the bitrate is not sufficient. In this paper, we present an adaptive perceptual preprocessing (APP) method to reduce the probability of these artifacts generated in video encoding. The APP algorithm...
In this paper, we present an FPGA implementation of a low complexity affine projection (AP) adaptive filtering algorithm based on a novel low complexity recursive filtering technique and filter update that is incorporated in dichotomous coordinate descent iterations. This adaptive algorithm is simple for finite precision implementation, requires small chip resources, and exhibits numerical stability...
In this paper, we present an FPGA implementation of a Recursive Least Squares adaptive filtering algorithm based on dichotomous coordinate descent iterations. The algorithm is simple for finite precision implementation, requires small chip resources, and exhibits numerical stability. For arbitrary regressors (as in antenna array beamforming), the proposed implementation allows significant increase...
In this paper, we analyze the 802.1x access control protocol and the firewall packet filtering strategy, as well as elaborated how to design the security access control system of the adaptive wireless gateway in the aspect of the port control, bi-directional user certificate authentication and packet filtering. Furthermore, the experimental results showed that this system has higher security.
In this paper, we present an FPGA implementation of a dynamically regularized recursive least squares adaptive filtering algorithm based on dichotomous coordinate descent iterations. The algorithm is simple for finite precision implementation, requires small chip resources, and exhibits numerical stability. The proposed implementation allows significant increase in the weight update rate compared...
The recursive least squares (RLS) adaptive filtering problem is expressed in terms of auxiliary normal equations with respect to increments of the filter weights. By applying this approach to the exponentially weighted case, a new structure of the RLS algorithm is derived. For solving the auxiliary equations, dichotomous coordinate descent (DCD) iterations with no explicit division and multiplication...
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