The Performance Of ALOHA Protocol In Indoor Radio Environment

Abstract

1.0 Abstract Radio transmission is an attractive alternative in deploying a local area network in indoor environment. ALOHA is a possible medium access protocol in transporting traffics with bursty nature. One potential threat in indoor radio transmission is multipath interference caused by signal reflections. This paper studies the effect of multipath interference on the performance of pure ALOHA random access technique. Key performance measures, channel throughput and mean packet delay, are obtained. These results are derived partially using minislot approximation and verified by computer simulations. To be practical, in the evaluation of the successful packet reception probability the signal capture effect is also taken into consideration. How seriously that indoor multipath interference affects this protocol is witnessed through numerical examples.