Publications:Performance evaluation and parameterization of the IEEE 802.16 contention-based CDMA bandwidth request mechanism for the OFDMA physical layer
From CERES
| Title | Performance evaluation and parameterization of the IEEE 802.16 contention-based CDMA bandwidth request mechanism for the OFDMA physical layer |
|---|---|
| Author | Dirk Staehle and Rastin Pries and Alexey Vinel and Andreas Mäder |
| Year | 2009 |
| PublicationType | Conference Paper |
| Journal | |
| HostPublication | MSWiM '09 : Proceedings of the 12th ACM international conference on Modeling, analysis and simulation of wireless and mobile systems |
| DOI | http://dx.doi.org/10.1145/1641804.1641868 |
| Conference | 12th ACM international conference on Modeling, analysis and simulation of wireless and mobile systems, Tenerife, SPAIN, OCT 26-29, 2009 |
| Diva url | http://hh.diva-portal.org/smash/record.jsf?searchId=1&pid=diva2:587609 |
| Abstract | 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. |
