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In this paper medical ICT scenarios are considered where a user/patient communicates to a base station with the help of one or more mobile devices in its close proximity. The system model assumes all the wireless devices cooperate in a mobile cloud. First of all, we identify medical ICT scenarios and select the most promising ones where the concept of mobile cloud can be readily exploited. Two cooperative...
The estimation of communication links quality plays a critical role not only in sensor network routing protocol, but also in maintaining the sensor network. By evaluating the estimation, when identify some failures occurrence, mobile robots can be deployed to automatically move to the region to cover communication gaps. This paper presents a comprehensive metric to evaluate the links quality and the...
In this paper, we propose a cross-layer optimization approach that exploits retransmission diversity in wireless CDMA communications. Conventionally, data packets that are not correctly detected are usually dropped. These dropped packets can be used to help data packet detection. By exploiting all the retransmitted packets, data packets can be correctly detected with higher probability. The proposed...
In this paper, we propose a cognitive radio-based multi-user resource allocation framework for mobile ad hoc networks using multi-carrier DS CDMA modulation over a frequency-selective fading channel. In particular, given pre-existing communications in the spectrum where the system is operating, in addition to potential narrow-band interference, a channel sensing and estimation mechanism is provided...
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