By Topic

Integrated Approach to Proportional-Fair Resource Allocation for Multiclass Services in an OFDMA System

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
$33 $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

2 Author(s)

This paper presents the novel resource allocation scheme for multiclass services in the downlink OFDMA system, in which the frame-based transmission with multiple subchannels and multiple time slots is used. As system utilization and fairness are necessary, the scheme is based on proportional fairness (PF) utility function. Two main service classes are considered. One is the guaranteed service class. The other is the non-guaranteed service class. The scheme guarantees the minimum bit rate for the former class. The PF-based optimization problem with minimum bit rate requirement is formed and solved by using the Lagrange multiplier method with relaxed constraints. The novel PF-based utility function is derived and used for this class. The non-guaranteed class is served after the guaranteed class by using the conventional PF utility function. Extensive simulation with user mobility and finite backlog is conducted. The results show that the proposed scheme is able to satisfy the minimum rate requirement for the guaranteed class with moderate system utilization. Furthermore, within the same class, the scheme can provide very high throughput fairness.

Published in:

Global Telecommunications Conference, 2009. GLOBECOM 2009. IEEE

Date of Conference:

Nov. 30 2009-Dec. 4 2009