NDLI: OFDMA/TDD packet transmission system with an adaptive subcarrier selection scheme for asymmetric wireless communication services

Content Provider	IEEE Xplore Digital Library
Author	Matsui, Y. Sampei, S. Morinaga, N.
Copyright Year	2001
Description	Author affiliation: Graduate Sch. of Eng., Osaka Univ., Japan (Matsui, Y.)
Abstract	This paper proposes an orthogonal frequency division multiple access/time division duplex (OFDMA/TDD) packet transmission system with an adaptive subcarrier selection scheme to support high speed and flexible bit rate transmission in wireless local area networks (LANs) and home link. In the proposed scheme, the spectral resource ratio between the uplink and downlink is adaptively controlled by changing the frame format, coding rate and transmit power in the OFDMA/TDD system, according to the uplink traffic load estimated by the ratio of used to unused subcarriers at the base station. For suppression of inter-subchannel interference, packet-switching based transmission is employed in the uplink. Moreover, to enhance frequency selective fading immunity, a channel monitoring-assisted adaptive subcarrier selection scheme is employed. Computer simulation confirms that the proposed system is effective in achieving a low message delay system even under dynamically varying traffic conditions.
Starting Page	54
Ending Page	55
File Size	198093
Page Count	2
File Format	PDF
ISBN	0780366220
DOI	10.1109/ICCE.2001.935209
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2001-06-19
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Adaptive systems Frequency conversion Bit rate Wireless LAN Downlink Control systems Telecommunication traffic Base stations Interference suppression Fading
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
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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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