Erlang Capacity of Multi-class TDMA Systems with Adaptive Modulation and Coding

Publication: Research - peer-reviewArticle in proceedings – Annual report year: 2008

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Erlang capacity is traditionally defined as the maximum value of offered traffic among different service classes that the system can support when the blocking probabilities at the call admission control (CAC) level do not exceed certain thresholds. That is valid when a fixed amount of bandwidth is allocated to each user in each frame during the whole service time. However, with the introduction of adaptive modulation and coding (AMC) scheme employed at the physical layer, outage might occur due to the fact that the allocation of bandwidth is dynamic based on the time-varying wireless channel conditions. In this paper, we evaluate the Erlang capacity of a TDMA system with AMC supporting voice and data traffics, by taking both the blocking and the outage probabilities into account. The analytical models for calculating the blocking and the outage probabilities are developed separately, and a joint algorithm for determining the Erlang capacity of the system is proposed with some numerical examples.
Original languageEnglish
Title of host publicationProceedings of IEEE ICC 2008
PublisherIEEE
Publication date2008
Pages115-119
ISBN (print)14-24-42075-X
DOIs
StatePublished

Conference

Conference2008 IEEE International Conference on Communications
CountryChina
CityBeijing
Period19/05/0823/05/08
Internet addresshttp://www.ieee-icc.org/2008/

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Copyright: 2008 IEEE. 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 to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE

CitationsWeb of Science® Times Cited: 3
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