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Cochannel interference is the most important issue in cellular mobile systems. It can be reduced by increasing the frequency re-use distance among the cochannel cells while keeping constant cell radius which improves the quality of a cellular mobile system. But this will decrease the overall network capacity because cluster size, which is inversely proportional to network capacity, also increases...
The SINR balancing problem involving joint beamforming and power control is considered in the cognitive radio network, wherein the single-input multi-output multiple access channels are assumed. Subject to two sets of constraints: the interference temperature constraints of primary users and the peak transmission power constraints of cognitive users, a low-complexity joint beamforming and power control...
This paper considers a cooperative and cognitive radio (CCR) system where two secondary users (SUs) exchange their information through a "cognitive" relay station (RS) via the two-way relaying. The SUs share the same spectrum with a primary user (PU) while maintaining the interference power at the PU under a certain level. In order to enhance the achievable sum rate, the cognitive RS exploits...
The introduction of advanced radio resource management features such as directional antennas, power control and variable data rates have been proposed to increase the performance of multihop wireless networks. In this paper we will study the combined effects of adaptive rate selection and power control in spatial time division multiple access (STDMA) networks where nodes are equipped with advanced...
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