Cart (Loading....) | Create Account
Close category search window
 

Optimal user scheduling and allocation for WiMAX OFDMA systems

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

4 Author(s)
Al-Janabi, M.S. ; Sch. of Electr., Electron. & Comput. Eng., Newcastle Univ., Newcastle upon Tyne, UK ; Tsimenidis, C.C. ; Sharif, B.S. ; Le Goff, S.Y.

We propose a strategy that optimally schedules and allocates users for adaptive modulation and coding based orthogonal frequency multiple access systems (AMC-OFDMA). This strategy aims to maximize the average system throughput as a function of bit error rate (BER) and spectral efficiency by exploiting the user diversity. It sorts the available users of an assigned base station (BS) in queues based on their priority levels and optimally selects a user from each queue, in which the average system throughout is maximized. Moreover, the proposed strategy guarantees fair services for all users in distinct priority levels. The scheduled users are allocated over the utilized bands in an optimal manner in order to improve the performance of the investigated system. Each user selects a suitable modulation and coding scheme (MCS) based on the corresponding minimum signal-to-noise ratio (SNR). The sub-carriers of the transmitted OFDMA frame are grouped in different bands depending on the number of utilized priority levels in a BS. Simulation results show the performance improvement obtained by the proposed strategy over other compared schemes.

Published in:

Wireless Communication Systems (ISWCS), 2010 7th International Symposium on

Date of Conference:

19-22 Sept. 2010

Need Help?


IEEE Advancing Technology for Humanity About IEEE Xplore | Contact | Help | Terms of Use | Nondiscrimination Policy | Site Map | Privacy & Opting Out of Cookies

A not-for-profit organization, IEEE is the world's largest professional association for the advancement of technology.
© Copyright 2014 IEEE - All rights reserved. Use of this web site signifies your agreement to the terms and conditions.