UCT CS Research Document Archive

DS-CDMA Fading Channels with Bursty IP Traffic Arrivals

Landman, Jesse and Pieter Kritzinger (2004) DS-CDMA Fading Channels with Bursty IP Traffic Arrivals. In Proceedings WiOpt 2004, Cambridge, England.

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We propose an analytic model for the performance of a faded DS-CDMA radio channel carrying bursty traffic. For the IP traffic model we propose a two-state Markov Modulated Poisson Process (MMPP) to model slow Poisson arrivals of packets interspersed by bursts of IP traffic with a much higher arrival rate. The channel model is a modified multi-state Gilbert-Elliot model which takes into account both the number of interfering users and whether the channel is in a faded or non-faded state. We analyse both Ricean and Rayleigh distributions for the user signal. For the final result we relied on a discrete event simulation of the same DS-CDMA radio channel data transmission process in order to parameterise the model. Results for metrics such as the slot success rate as a function of the number of interfering users and the packet throughput as a function of the IP traffic arrival rate are derived.

EPrint Type:Conference Poster
Subjects:C Computer Systems Organization: C.2 COMPUTER-COMMUNICATION NETWORKS
ID Code:129
Deposited By:Landman, Jesse
Deposited On:06 May 2004