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Data transmission from sources to sink is the most common service in wireless sensor networks (WSNs) but sink mobility brings new challenges to it. How to keep the sensors informed of the current state of the mobile sink is the primary issue for the mobile sink management. In this paper, we propose a distributed mobility management scheme that uses a set of access points (APs) to support the data...
Prior study on the cognitive radio (CR) has mostly adopted the passive sensing protocol, where the CR keeps monitoring the spectrum of interest, and decides to transmit when the sensing result indicates that the primary radio (PR) is inactive. In this paper, we propose an alternative active sensing protocol where, prior to the sensing, the CR generates a temporary jamming signal to deliberately interfere...
FUWA is a developmental humanoid built in the Embodied Intelligence Laboratory at Fudan University. The body of the robot is designed and manufactured by the researchers, but the actual sensorimotor association is developed autonomously from its own experience. For FUWA, no task is given during the programming time. It learns while performing. In this paper, key issues in designing the architecture...
In this letter, a method is proposed to optimally combine the received signal samples in space and time based on the principle of maximizing the signal-to-noise ratio (SNR). After the combining, energy detection (ED) is used. However, optimal combining needs information of the source signal and channel, which is usually unknown. To overcome this difficulty, a method is proposed to blindly combine...
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