By Topic

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

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

3 Author(s)
Matsui, Y. ; Graduate Sch. of Eng., Osaka Univ., Japan ; Sampei, S. ; Morinaga, N.

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

Published in:

Consumer Electronics, 2001. ICCE. International Conference on

Date of Conference:

2001