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2010

Cooperative Adaptive Spectrum Sharing in Cognitive Radio Networks

8 years 10 months ago
Cooperative Adaptive Spectrum Sharing in Cognitive Radio Networks
The cognitive radio (CR) paradigm calls for open spectrum access according to a predetermined etiquette. Under this paradigm, CR nodes access the spectrum opportunistically by continuously monitoring the operating channels. A key challenge in this domain is how the nodes in a CR network (CRN) cooperate to access the medium in order to maximize the CRN throughput. Typical multi-channel MAC protocols assume that frequency channels are adjacent and that there are no constraints on the transmission power. However, a CRN may operate over a wide range of frequencies, and a power mask is often enforced on the transmission of a CR user to avoid corrupting the transmissions of spectrum-licensed primary-radio (PR) users. To avoid unnecessary blocking of CR transmissions, we propose a novel distance-dependent MAC protocol for CRNs. Our protocol, called DDMAC, attempts to maximize the CRN throughput. It uses a novel probabilistic channel assignment mechanism that exploits the dependence between th...
Haythem Bany Salameh, Marwan Krunz, Ossama Younis
Added 22 May 2011
Updated 22 May 2011
Type Journal
Year 2010
Where TON
Authors Haythem Bany Salameh, Marwan Krunz, Ossama Younis
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