Title :
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
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;
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
DOI :
10.1109/YCICT.2009.5382373
