Distributed Probabilistic Scheduling in OFDMA Uplink using Subcarrier Sensing

Author

Yaacoub, Elias ; Dawy, Zaher

Author_Institution

Dept. of Electr. & Comput. Eng., American Univ. of Beirut, Beirut

fYear

2009

fDate

5-8 April 2009

Firstpage

1

Lastpage

5

Abstract

Distributed uplink scheduling in OFDMA systems is considered. In the proposed scenario, mobile users have the responsibility of making their own transmission decisions. Users are grouped into categories according to their channel state on each subcarrier. Users from each category decide on their own transmission by waiting for a random delay then transmitting with a certain probability. The proposed algorithm is completely distributed and does not require scheduling effort from the base station. Although no centralized control is present in the proposed approach, promising results are achieved in terms of throughput and fairness.

Keywords

OFDM modulation; frequency division multiple access; probability; radio links; scheduling; OFDMA uplink; base station; distributed probabilistic scheduling; distributed uplink scheduling; subcarrier sensing; Base stations; Centralized control; Communications Society; Delay; Feedback; Iterative algorithms; Multiaccess communication; Processor scheduling; Scheduling algorithm; Throughput;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications and Networking Conference, 2009. WCNC 2009. IEEE

Conference_Location

Budapest

ISSN

1525-3511

Print_ISBN

978-1-4244-2947-9

Electronic_ISBN

1525-3511

Type

conf

DOI

10.1109/WCNC.2009.4917677

Filename

4917677