NDLI: Erlang Capacity of Multi-Class TDMA Systems with Adaptive Modulation and Coding

Content Provider	IEEE Xplore Digital Library
Author	Hua Wang Iversen, V.B.
Copyright Year	2008
Description	Author affiliation: Dept. of Commun., Tech. Univ. of Denmark, Lyngby (Hua Wang; Iversen, V.B.)
Abstract	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.
Starting Page	115
Ending Page	119
File Size	206056
Page Count	5
File Format	PDF
ISBN	9781424420759
DOI	10.1109/ICC.2008.30
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-05-19
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Time division multiple access Adaptive systems Modulation coding Capacity planning Bandwidth Call admission control Physical layer Traffic control Analytical models Probability
Content Type	Text
Resource Type	Article

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