NDLI: Parallel Use of Multiple Channels in Multi-hop 802.11 Wireless Networks

Content Provider	IEEE Xplore Digital Library
Author	Chen-Mou Cheng Pai-Hsiang Hsiao Kung, H.T. Vlah, D.
Copyright Year	2006
Description	Author affiliation: Div. of Eng. & Appl. Sci., Harvard Univ., Cambridge, MA (Chen-Mou Cheng; Pai-Hsiang Hsiao; Kung, H.T.; Vlah, D.)
Abstract	We consider parallel use of multiple channels in a multi-radio, multi-hop 802.11 wireless network, with the goal of maximizing the total multi-hop throughput. We first quantify several fundamental forms of radio interference that cause performance degradation when the number of hops increases and that prevent total throughput from scaling up with number of radio interfaces at each node. We then evaluate three different methods of parallel channel use: ad-hoc, frequency-division multiplexing (FDM), and time-division multiplexing (TDM). We measure their performance on a linearly connected multi-hop network of dual-radio nodes. Although theoretically these three methods should have comparable performance, their actual measured performances are quite different. We find that TDM has the best performance, followed by ad-hoc and then FDM. The performance differences are due to these methods' capabilities of combating interference. We conclude that interference, especially adjacent channel interference, has significant effect on the achievable performance of a multi-radio, multi-hop network and hence should be carefully taken into account in the design and deployment of such a network.
Starting Page	1
Ending Page	9
File Size	12013410
Page Count	9
File Format	PDF
ISBN	142440617X
DOI	10.1109/MILCOM.2006.302315
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-10-23
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Spread spectrum communication Wireless networks Throughput Time division multiplexing Signal to noise ratio Electromagnetic interference Wireless LAN Dipole antennas Decoding Frequency division multiplexing
Content Type	Text
Resource Type	Article

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