Home // International Journal On Advances in Internet Technology, volume 3, numbers 1 and 2, 2010 // View article

Collision Reduction in Cognitive Wireless Local Area Network over Fibre

Authors:
Haoming Li
Alireza Attar
Victor C. M. Leung
Qixiang Pang

Keywords: cognitive radio; radio over fibre; WLAN; diversity; capture effect

Abstract:
Cognitive wireless local area network over fiber (CWLANoF), which employs remote antenna units (RAUs) connected to a central cognitive access point through optical fibres, can provide a cost-effective and efficient architecture for devices to equally share the industrial, scientific, and medical band by taking advantage of cognitive radio capabilities. Based on the CWLANoF architecture, we propose two methods to reduce collisions among stations, with multiple independent channels operating at each RAU, and transmitter and receiver diversity through cooperation of adjacent RAUs. Multi-channeloperation method is enabled by wide-band optical fibres and diversity method is enabled by distributed RAUs in the CWLANoF architecture. Extensive simulations show substantial improvements in Transmission Control Protocol throughput and packet error rate reduction of constant-bit-rate traffic streams, especially under dynamic traffic conditions.

Pages: 1 to 12

Copyright: Copyright (c) to authors, 2010. Used with permission.

Publication date: September 5, 2010

Published in: journal

ISSN: 1942-2652