NDLI: Improving the efficiency of wireless networks via a passive rate-adaptation strategy

Content Provider	IEEE Xplore Digital Library
Author	Annamalai, A. Jing Lu Vaman, D.R.
Copyright Year	2008
Description	Author affiliation: ARO Center for Battlefield Commun. (CeBCom) Dept. of Electr. & Comput. Eng., Prairie View A&M Univ., Prairie View, TX (Annamalai, A.; Jing Lu; Vaman, D.R.)
Abstract	A simple receiver-oriented rate-adaptation strategy is proposed for improving the throughput of mobile ad-hoc networks (MANETs) while transmitting multimedia data. The quality of a randomly fluctuating wireless link is maintained at a desired level by multiplexing and mapping different traffic sources that require unequal error protection into a multiresolution (multicast) modulation and dropping the "less important" bits (i.e., passive rate reduction) when the channel condition deteriorates. The throughput (effective data rate) is increased by not discarding the correctly received bits within the noisy received symbols with a high probability (i.e., by adaptively selecting appropriate decision regions for each symbol demodulation based on the channel quality estimate available at the receiver). The salient feature of our rate-adaptation scheme relies on the fact that it does not require any feedback of channel quality estimates from the receiver to the sender, and our improvements are achieved without adaptively altering the signal constellation size at the transmitter according to the link quality or by using error control coding with incremental redundancy. Moreover, it can still be very effective even in fast fading channels (i.e., high Dopplerfrequency).
Starting Page	370
Ending Page	379
File Size	231778
Page Count	10
File Format	PDF
ISBN	9781424418695
ISSN	19345070
DOI	10.1109/WTS.2008.4547590
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-04-24
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Constellation diagram Transmitters Wireless networks Feedback Telecommunication traffic Throughput Ad hoc networks Error correction codes Signal resolution Demodulation
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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