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In this paper, we propose an algorithm for detecting the number of Gaussian sources received by an array of a number ( ) of sensors. This algorithm is based on the minimum description length (MDL) principle using the outer-products of the array output. We show that as long as the covariance matrix of the array output has the full rank , the covariance matrix of a vectorized outer-product...
This paper presents a new method to draw particles in the particle filter. The standard bootstrap filter draw particles randomly from the prior density which does not use the latest information of the observation. Some improvements consist in using extended Kalman filter or unscented Kalman filter to produce the importance distribution in order to move the particles from the domain of low likelihood...
The concept of spectrum sharing has received increasing interest in an attempt to alleviate the spectrum scarcity issue. In this paper, the problem of K pairs of cognitive radios sharing N available channels and its associated problem of optimal power allocation across users and channels are studied. A new metric indicating user satisfaction in both data rate and power consumption is formulated. Joint...
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