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In this paper we study quality-of-service (QoS) provisioning in an ad hoc cognitive radio network with spectrum underlay. Both streaming traffic and non-real-time (nrt) data traffic are considered. An admission control scheme is first proposed based on relatively static information such as path loss and average interference levels in order to guarantee the average throughput of each connection. Outage...
In cognitive radio systems, Dynamic Spectrum Leasing (DSL) can improve the efficiency of spectrum utilization. In DSL, the primary user who has the license for a part of the bandwidth, decides to lease it to a secondary user or not. In this paper, we assume an OFDM-based system and perform the leasing operation in this system where the primary user leases the spectrum for a number of OFDM symbols...
Validity of content service on ad hoc networks is significantly affected by the QoS of network and quality of service content. Many current models of content service resolve mainly service selecting and accessing. However, many duplicate services in a heterogeneous environment have often been polluted before service published. Our work proposes an audition model to ensure availability of service content...
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