NDLI: Optimizing practical adaptive frequency hopping and medium access control in ad hoc networks

Content Provider	IEEE Xplore Digital Library
Author	Tanbourgi, Ralph Elsner, Jens P. Jakel, Holger Jondral, Friedrich K.
Copyright Year	2012
Description	Author affiliation: Communications Engineering Lab, Karlsruhe Institute of Technology, Germany (Tanbourgi, Ralph; Elsner, Jens P.; Jakel, Holger; Jondral, Friedrich K.)
Abstract	Adaptive frequency hopping (AFH) as proposed, e.g., in IEEE 802.15.2 aims at increasing system reliability in the presence of quasi-static external interference. Practical approaches require autonomous sensing of the interference environment, with the measurements containing both external interference and network self -interference. In prior work, a simplistic model for AFH-based ad hoc networks was developed to analyze how this issue affects the area spectral efficiency (ASE). It was found that the AFH mechanism severely degrades ASE when self-interference is increased. In this paper, we modify the model to account for the correlation between the nodes' adapted hop sets. We then address the question of how to design the system parameters to achieve optimal performance and avoid the degradation. We discuss different optimization problems and identify sensing techniques that can cope with increased self-interference. Among these techniques, carrier detection sensing was found to be robust against self-interference while showing good performance. We further discuss cases where joint optimization of the AFH and CSMA mechanisms is beneficial and cases where there is little to be gained.
Starting Page	368
Ending Page	373
File Size	383422
Page Count	6
File Format	PDF
ISBN	9781467322942
e-ISBN	9783901882456
e-ISBN	9783901882470
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-05-14
Publisher Place	Germany
Access Restriction	Subscribed
Rights Holder	IFIP
Subject Keyword	Fading area spectral efficiency Interference Receivers Sensors Adaptive frequency hopping interference Approximation methods stochastic geometry ad hoc networks Probes Optimization
Content Type	Text
Resource Type	Article

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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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