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In cognitive radio networks, Secondary Users (SUs) can access the spectrum simultaneously with the Primary Users (PUs) in underlay mode. In this case, interference caused to the licensed users has to be effectively controlled. The SUs have to make spectrum access decisions in order to enhance their quality of service, but without causing harmful interference to the coexisting PUs. In this paper, we...
Cloud computing is often presented as the fifth generation of computing providing a wide range of techniques (virtualization, utility-based pricing, etc.) to deliver everything as a service through Internet. It is an attractive way that enables users to take advantage of the powerful computation solutions and the numerous available network services. And as any other new technology, cloud computing...
Cloud Computing is a revolutionary model that offers everything as a service (storage, servers, network, etc.). It enables users to outsource their data and entrust a service provider with its storage and processing. However, we are doing with resource-limited environment where users compete to have enough resources for their tasks. Thus, a resource allocation model is needed for a better utilization...
Relaying is a promising technique for the next generation cellular networks. It is highly recommended in the 3GPP LTE-Advanced because it is expected to satisfy the ever growing capacity and coverage demands in a cost-efficient way. Yet, in order to fully exploit the benefits of relaying, we should examine the radio resource allocation between the eNB and the relay nodes. In this paper, we propose...
Femtocells are new devices that are recently developed to address the poor indoor coverage of the 3G cellular network and beyond. This solution may, however, cause significant interference in the system. In our paper, we propose a new approach based on game theory which aims at enhancing the femtocells' capacity in a HSDPA network while mitigating the interference impact on the macro users' quality...
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