Resource allocation for OFDMA downlink with per-user MCS constraint

Author

Lin, Yicheng ; Wang, Wenbo ; Shi, Jiong ; Wang, Li ; Shao, Lan

Author_Institution

Key Lab. of Universal Wireless Commun., Beijing Univ. of Posts & Telecommun., Beijing, China

fYear

2009

fDate

20-21 Sept. 2009

Firstpage

267

Lastpage

270

Abstract

In this paper, we study the resource allocation problem in the downlink of an OFDMA system. Taking into account the constraint that each user can be assigned only one modulation and coding scheme (MCS), our goal is to maximize the system utility, which can be either the sum rate of users or certain fairness metric. The joint subcarrier, rate, and power allocation problem is formulated, and a straightforward suboptimal algorithm is proposed to solve this problem efficiently. Through computer simulation, our proposed algorithm is verified to be better in performance compared to the existing ones.

Keywords

OFDM modulation; frequency division multiple access; resource allocation; MCS constraint; OFDMA downlink; modulation and coding scheme; per-user; resource allocation; straightforward suboptimal algorithm; Base stations; Computer simulation; Downlink; Laboratories; Modulation coding; Resource management; Signal processing; Signal processing algorithms; Wireless LAN; Wireless communication; OFDMA; downlink; per-user MCS constraint; proportional fairness; resource allocation;

fLanguage

English

Publisher

ieee

Conference_Titel

Information, Computing and Telecommunication, 2009. YC-ICT '09. IEEE Youth Conference on

Conference_Location

Beijing

Print_ISBN

978-1-4244-5074-9

Electronic_ISBN

978-1-4244-5076-3

Type

conf

DOI

10.1109/YCICT.2009.5382373

Filename

5382373