NDLI: A Systematic Evaluation of Interference Characteristics in 802.11-Based Wireless Networks

Content Provider	IEEE Xplore Digital Library
Author	Wee Lum Tan Portmann, M. Peizhao Hu
Copyright Year	2011
Abstract	Interference is a crucial factor that impacts the overall throughput performance of IEEE 802.11-based wireless networks. As such, understanding interference characteristics is essential towards the optimal management and operation of these networks. In this paper, we use a conducted testbed (that allows us to completely control the signal propagation and received signal strength) to systematically evaluate the impact of interference in terms of the carrier-sensing interference and the receiver interference. Our results show that carrier-sensing interference does not conform to the often-used binary model of "either carrier-sense or no carrier-sense", and that the sum of the normalized sending rates of nodes that can fully carrier-sense each other is greater than 1.0. In terms of receiver interference, our results show that while the interference impact on a data link's throughput is approximately linear with respect to the offered load of the interferer node, its relationship with respect to the offered load of the data sender is non-linear. Our results also show that the combined interference impact of multiple interferer nodes cannot be predicted by just using independent measurements of the interference impact of individual interferer nodes. The results in this paper indicate that commonly made underlying assumptions of interference models are not valid, and consequently show the limitations of the corresponding models.
Starting Page	646
Ending Page	652
File Size	1437333
Page Count	7
File Format	PDF
ISBN	9781612843131
ISSN	1550445X
DOI	10.1109/AINA.2011.19
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-03-22
Publisher Place	Singapore
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Interference Receivers Throughput Attenuators Broadcasting Wireless networks Wireless sensor networks interference model 802.11 wireless networks carrier-sensing interference receiver interference
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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