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Joint Optimal Rate, Power, and Spectrum Allocation in Multi-hop Cognitive Radio Networks
Blekinge Tekniska Högskola, Sektionen för datavetenskap och kommunikation.
Ansvarlig organisasjon
2012 (engelsk)Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

Interference due to the sharing of common spectrum band among links and congestion due to the contention among flows sharing the same link have become obstacles to good performance in wireless networks, especially in multi-hop cognitive radio networks (MHCRNs). Consequently, the high end-to-end throughput for MHCRNs calls for a framework of cross-layer optimization design. In this paper, by taking into account the problem of joint optimal rate, power, and spectrum allocation (JORPS), we propose a new cross-layer optimization framework for MHCRNs under spectrum underlay manner using orthogonal frequency division multiple access (OFDMA). The formulation is shown to be a mix-integer non-linear non-convex optimization problem, which is NP-hard in general. To solve the problem, we develop a partially distributed solution, which has been proved to converge to the global optimum with the tradeoff complexity and convergence speed.

sted, utgiver, år, opplag, sider
Ottawa: IEEE , 2012.
HSV kategori
Identifikatorer
URN: urn:nbn:se:bth-7307Lokal ID: oai:bth.se:forskinfo930F6F317DE82F95C12579D30066BF25OAI: oai:DiVA.org:bth-7307DiVA, id: diva2:834909
Konferanse
IEEE International Communications Conference (ICC)
Tilgjengelig fra: 2012-09-18 Laget: 2012-04-01 Sist oppdatert: 2018-01-11bibliografisk kontrollert

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