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In this paper, an Interference Alignment and Cancellation (IAC) based transmission and scheduling scheme is proposed for an infrastructured Cognitive Radio (CR) Multiple-Input Multiple-Output (MIMO) system with multiple secondary users. With the cooperation of Primary Base Station (PBS) and Secondary Base Station (SBS), a signal processing procedure is designed to guarantee the priority of the primary...
Through theoretical analysis and numerical simulation, this paper proves that the classical bistable system is existence of output saturation. When the system output reaches saturation, the output signal to noise ratio (SNR) will drop rapidly, and it's poor to extract a useful signal from the strong background noise. Therefore, we put forward a new piecewise hybrid system, and prove that there is...
In this paper a joint design of signal processing at transmitter and receiver end in both primary and cognitive system is devised. Then a spatio-temporal resource model and correspondingly a management strategy are proposed. Simulation results show that the performance of cognitive system is effectively improved and no interference is imposed on the primary transmission.
A wrist-worn health monitoring terminal is developed to realize body's multi-parameter measurement by including a common mobile phone. The common mobile phone wireless connected to the health monitoring terminal is included to be the memory and the displayer. Also the mobile phone acts as the wireless module to communicate with the health service centre. The physiological parameters includes body...
Power quality disturbance (PQD) identification is an important technology in power system especially when power market is realized. The producers of PQD are different which result in the difference of abnormity and complexity. Fractal dimension is a mean to characterize the abnormity and complexity of PQD and it is potential for PQD identification. Traditional fractal box counting dimension is based...
An on-line BCI system is designed to control self-designed robot for photo-taking. The simulated experiment of BCI's application outside space-ship in aerospace is included in this paper. The P300-based BCI system includes three modules: visual stimulus, EEG sampling and signal processing, external robot controlling. A robot acts as the carrier for the camera. The robot is developed with the ability...
The research adopts the classical visual evoked potentials paradigm, designs the stimulation program and experimental scheme base on the labview platform,and the way of visual stimulate is studied in this paper. In this way we can produce event-related potentials more effectively. On the platform in labview, achieve the event-related potential signal acquisition and processing. Explore how extract...
The new method for discrete fractional cosine transform is proposed, and it was introduced in acoustic emission signal enhancement. According to the characteristic of rub-impact acoustic emission (AE) signal from rotating machinery, two constructions are proposed to enhance AE signal, which based on three cycles discrete fractional cosine transform (FDCT3), and modified transform (MFDCT3). The experiment...
AVS-M is part seven of AVS standard, which is the second generation source coding standard of China. Because the system resource is limited in mobile platform compared with AVS P2, AVS-M has lower complexity, and is suitable for mobile-multimedia applications. The performance of AVS-M is close to H.264/AVC in the case of low rate bitstream. It is very important to increase the real-time encoding and...
The maximum amplitude of matching Fourier transform (MFT) spectrum based on re-sampling of sine (single pulse, SP) signal reflected the frequency of the signal. The analysis of the MFT spectrum of SP signal reflected the MFT theories, from which a method to estimate the frequency of SP signal was proposed; The similarity of the MFT spectrum of the SP and linear FM (LFM) signal was analyzed, then the...
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