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This paper introduces a new method of extracting mixed characteristic parameters using the principal component analysis (PCA), this method proposed is based on widely use of the PCA and K-means clustering in image and speech signal processing. The first work is systematic study of extracting algorithm and theory for speaker recognition system, which is on the most commonly used LPCC (Linear Prediction...
In order to adapt channel variation and maximize throughput performance, Adapt Modulation and Coding (AMC) is used in Long-Term Evaluation (LTE) downlink. However, due to the wireless channel random variation, inaccurate reported Channel Quality Indicator (CQI) is introduced, which will affect quality of data transmission. Therefore, it is necessary to modify reported CQI in AMC process. Although...
Video streaming is a multimedia service that gains significant development in recent years. The main problem that arises within that service is bandwidth fluctuation utilization on wireless channel network. In this paper, we propose adaptive methods of scalability as an attractive solution for the aforementioned problem. Scalable method on wireless communication must be suited to processed input/video...
This paper proposes an improved discrete cosine transform (DCT) domain block video watermarking scheme which based on the video sequences' characteristics. The watermarking scheme fully considered the characteristic of human visual system and moving object detection technology, and chose the movement and complex field as embedding regions. In the watermarking embedding process, we used the sub-pixel...
Speech endpoint detection is a crucial component in speech recognition system, especially in the noisy environment. It's accuracy affects the computational complexity and the recognition performance of the speech recognition system. The paper proposes an endpoint detection of speech signals based on Teager Energy Operator(TEO).It uses a threestate transition and judgment mechanism based on double...
With the rapid development of information technology, a variety of control functions in intelligent building is strengthening, BACnet is the most open and interoperability building automatic control network, which integrated with the Internet, have been an inevitable trend. This paper has provided a technology of BACnet integrate with Internet using XML and SOAP, which has a good characteristic of...
The watermark embedding scheme is a improved algorithm of video watermarking. Basing on the Jordan motion vector watermarking algorithm and the human visual identification system and the secret key principle, we divide the motion vectors into two types. And according to the specific circumstances of motion vectors, we embed the watermark into the selected motion vectors, then the extraction process...
Severe noise and interference on the upstream channel in the HFC system and noise funneling effects are very hard. These noise and interference abstract as narrow band interference and take a nonlinear suppression measure from the point of signal processing. High efficient nonlinear suppression arithmetic MLMS/MRLS/MFTF can be applied in the narrow band interference suppression. The SNR improvement...
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