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We consider a multi-way relay network with multiple users exchanging information with each other via a multi-antenna relay. We jointly design relay beamforming matrices and users' linear processing receivers to maximize the minimum signal-to-interference-and-noise ratio (SINR) under the relay power budget. We solve the joint optimization problem by iteratively optimizing the relay beam matrices and...
P300 speller is a traditional brain computer interface paradigm and focused by lots of current BCI researches. In this paper a support vector machine based recursive feature elimination method was adapted to select the optimal channels for character recognition. The margin distance between target and nontarget stimulus in feature space was evaluated by training SVM classifier and then the features...
In the experiments of the transmission fault diagnosis, acquiring vibration signals from three measurement locations by multi-sensors. Using improved fastICA algorithm to de-nosing and order analysis algorithm to get the order spectrum, the paper proposed two evaluation indexes. According to the experiment result by using evaluation indexes, the fault characteristics contained in the vibration signals...
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...
Based on signal to noise ratio and probabilistic neural network method associated with experimental data, an analysis model in gastric carcinoma is presented. According to the available information, the samples of gastric carcinoma can be tested and analyzed. The signal to noise ratio is first calculated. Secondly, records in the database are chosen as a training set to build a probabilistic neural...
A single-loop third-order switched-capacitor sigma-delta modulator for hearing aid application is presented. Double-sampling is introduced to achieve a high performance with comparative low power consumption. The effect of capacitor mismatch is further discussed. To over come the switch-on problem under low-voltage, bootstrapping is adopted in this design. The modulator is implemented under SMIC 0...
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