Adaptive fair subcarrier/rate allocation in multirate OFDMA networks: Radio link level queuing performance analysis

Simple item page
dc.contributor.authorNiyato, D
dc.contributor.authorHossain, E
dc.date.accessioned2007-10-04T12:34:15Z
dc.date.available2007-10-04T12:34:15Z
dc.date.issued2006-11-30T12:34:15Z
dc.description.abstractThis paper presents a semi-analytical methodology for radio link level performance analysis in a multirate "orthogonal frequency-division multiple-access" (OFDMA) network with adaptive fair rate allocation. Multirate transmission is assumed to be achieved through adaptive modulation, and fair rate allocation-is based on the principle of generalized processor sharing to allocate the subcarriers adaptively among the users. The fair rate allocation problem is formulated as an optimization problem with the objective of maximizing system throughput while maintaining fairness (in terms of transmission rate) among the users. The "optimal" fair rate allocation is obtained by using the "Hungarian method." A heuristic-based approach, namely the "iterative approach," that is more implementation friendly is also presented. The throughput performance of the iterative fair rate allocation is observed to be as good as that of optimal fair rate allocation and is better than that of the static subcarrier allocation scheme. Also, the iterative fair allocation provides better fairness compared to that for each of the optimal and the static subcarrier allocation schemes. To this end, a queuing model is formulated to analyze radio link level performance measures such as packet dropping probability and packet transmission delay under the above rate allocation schemes. In this formulation, packet arrivals are modeled by the discrete Markov modulated Poisson process, which is flexible to model different types of traffic arrival patterns. The proposed framework for radio link level performance analysis of multirate OFDMA networks is validated by extensive simulations. Also, examples on the application of the proposed model for connection admission control and quality-of-service provisioning are illustrated.en
dc.format.extent900258 bytes
dc.format.mimetypeapplication/pdf
dc.identifier.citation0018-9545; IEEE TRANS VEH TECHNOL, NOV 2006, vol. 55, no. 6, p.1897 to 1907.en
dc.identifier.doihttp://dx.doi.org/10.1109/TVT.2006.878740
dc.identifier.urihttp://hdl.handle.net/1993/2861
dc.language.isoengen_US
dc.rights©2006 IEEE. This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of the University of Manitoba's products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to pubs-permissions@ieee.org. By choosing to view this document, you agree to all provisions of the copyright laws protecting it.en
dc.rightsrestricted accessen_US
dc.statusPeer revieweden
dc.subjectadaptive fair subcarrier allocationen
dc.subjectadaptive modulation (AM)en
dc.subjectorthogonal frequency-division multiple access (OFDMA)en
dc.subjectqueuing analysisen
dc.subjectSYSTEMSen
dc.subjectMODULATIONen
dc.subjectCHANNELen
dc.subjectACCESSen
dc.titleAdaptive fair subcarrier/rate allocation in multirate OFDMA networks: Radio link level queuing performance analysisen
Files
Collections
University of Manitoba Scholarship (login required)