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Modelling of the RACH channel in a real environment for a high efficiency and stability on wireless communications

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3 Author(s)
A. Mendez ; Wireless Commun. Group, CICESE Res. Centre, Ensenada, Mexico ; D. Covarrubias ; C. Vargas

The purpose of this work is to present realistic behaviour of slotted Aloha (S-Aloha), used as request access channel (RACH), with good performance regarding stability, efficiency, delay and capacity of traffic control. We present modelling and simulation of those parameters, which most influence the performance in terms of stability, and efficiency of the MAC technique based on S-Aloha. Considering particularly those aspects that degrade in greater scale the response of the system, such as: retransmission algorithm, capture effect and radio channel effects, we show that throughput can be improved by 70% and can be stabilised. Therefore, if we use S-Aloha as request access channel (RACH), it could be a good alternative for third-generation systems.

Published in:

Personal, Indoor and Mobile Radio Communications, 2002. The 13th IEEE International Symposium on  (Volume:3 )

Date of Conference:

15-18 Sept. 2002