Performance evaluation and parameterization of the IEEE 802.16 contention-based CDMA bandwidth request mechanism for the OFDMA physical layer
2009 (English)In: MSWiM '09: Proceedings of the 12th ACM international conference on Modeling, analysis and simulation of wireless and mobile systems, New York: Association for Computing Machinery (ACM), 2009, p. 374-383Conference paper, Published paper (Refereed)
Abstract [en]
The IEEE 802.16 standard specifies two contention-based mechanisms for the OFDMA physical layer to transmit bandwidth requests from subscriber station to base station: the standard mechanism is based on Slotted Aloha with a truncated binary exponential backoff; the alternative one is based on CDMA. This paper describes the CDMA-based contention mechanism and presents an analytic model to compute its performance in terms of delay and consumed resources. The tunable parameters for the CDMA-based random access procedure are the number of ranging subchannels, the number of codes per ranging subchannels, and the detection threshold. An optimal configuration is derived for a given load in terms of the request arrival rate.
Place, publisher, year, edition, pages
New York: Association for Computing Machinery (ACM), 2009. p. 374-383
Keywords [en]
CDMA, Dimensioning, IEEE 802.16, Performance evaluation, Random access, WiMAX
National Category
Communication Systems
Identifiers
URN: urn:nbn:se:hh:diva-21000DOI: 10.1145/1641804.1641868ISI: 000281753300051Scopus ID: 2-s2.0-74049132726ISBN: 978-1-60558-616-8 OAI: oai:DiVA.org:hh-21000DiVA, id: diva2:587609
Conference
12th ACM international conference on Modeling, analysis and simulation of wireless and mobile systems, Tenerife, SPAIN, OCT 26-29, 2009
2013-01-142013-01-142015-09-29Bibliographically approved