Modelling a DS-CDMA fading Channel with Bursty Traffic Arrivals
Landman, Jesse (2003) Modelling a DS-CDMA fading Channel with Bursty Traffic Arrivals. Technical Report CS04-02-00, Department of Computer Science, University of Cape Town.
We propose an analytic model for the performance of a faded DSCDMA radio channel carrying bursty traffic. For the IP traffic model we propose a twostate 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 multistate GilbertElliot model which takes into account both the number of interfering users and whether the channel is in a faded or nonfaded 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 DSCDMA 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:||Departmental Technical Report|
|Subjects:||C Computer Systems Organization: C.2 COMPUTER-COMMUNICATION NETWORKS|
|Deposited By:||Landman, Jesse|
|Deposited On:||22 April 2004|