Wenbo Wang

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—This paper investigates the energy-efficient power allocation for a two-tier, underlaid femtocell network. The behaviors of the Macrocell Base Station (MBS) and the Femtocell Users (FUs) are modeled hierarchically as a Stackelberg game. The MBS guarantees its own QoS requirement by charging the FUs individually according to the cross-tier interference, and(More)
The central problem in cognitive radio (CR) is how to adapt, given a wireless environment, so as to operate while meeting the constraints of a primary incumbent in a spectrum band. Adaptation for transmission of real-time multimedia lends itself to a cross-layer approach. This paper discusses a cross-layer CR scheme for real-time multimedia transmission(More)
—The framework of cognitive wireless radio is expected to endow the wireless devices with the cognition-intelligence ability, with which they can efficiently learn and respond to the dynamic wireless environment. In many practical scenarios, the complexity of network dynamics makes it difficult to determine the network evolution model in advance. As a(More)
This paper studies the problem of robust spectrum-aware routing in a multi-hop, multi-channel Cognitive Radio Network (CRN) with the presence of malicious nodes in the secondary network. The proposed routing scheme models the interaction among the Secondary Users (SUs) as a stochastic game. By allowing the backward propagation of the path utility(More)
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