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According to the nonlinear amplification characteristic with memory effection of power amplifier (PA) in WCDMA systems, digital predistorter model is established and an identification algorithm for Wiener PA model with memory is proposed. The method can avoid the local convergence problem of NG algorithm effectively. Moreover it has a very good suppression of signal spectral regrowth. Theoretical...
Skin color detection is an important subject in computer vision research. Color segmentation takes a great attention because color is an effective and robust visual cue for characterizing an object from the others. To aim at existing skin color algorithms considering the luminance information not enough, a reliable color modeling approach was proposed. It is based on the fact that color distribution...
Peer-to-peer (P2P) networks have attracted more and more attentions in recent years. The access control model is very important for network environment especially for the dynamic networks such as P2P networks. In this paper, a novel time-sensitive access control was proposed for the P2P networks. Firstly, the time point and time span described by the OCL (object constraint language) was introduced...
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