Aggressive Subchannel Allocation Algorithm for Efficient Dynamic Channel Allocation in Multi-User OFDMA System

Author

Ko, SangJun ; Heo, Joo ; Chang, KyungHi

Author_Institution

Inha Univ., Incheon

fYear

2006

fDate

11-14 Sept. 2006

Firstpage

1

Lastpage

5

Abstract

This paper solves the problem of finding an intelligent subchannel allocation method to communicate with multiple users in OFDMA wireless systems. We propose an ASA (aggressive sub-channel allocation) algorithm, which is an intelligent dynamic channel allocation algorithm considering all users´ channel state information conditionally to maximize throughput in an OFDMA system. We compare the ASA algorithm with round-robin, PF (proportional fair) and ACG (amplitude craving greedy) in the 2-tier cell environment and then analyze the performance of each algorithm through computer simulation in downlink OFDMA system. Simulation results show that the proposed ASA algorithm gets 24 %, 16 % and 14 % better ring throughput compared with the round-robin, PF and ACG, respectively

Keywords

channel allocation; frequency division multiple access; aggressive subchannel allocation algorithm; amplitude craving greedy; channel state information; intelligent dynamic channel allocation; multiuser OFDMA system; proportional fair; round-robin; Algorithm design and analysis; Channel allocation; Channel state information; Computational modeling; Computer simulation; Downlink; Heuristic algorithms; Performance analysis; Round robin; Throughput;

fLanguage

English

Publisher

ieee

Conference_Titel

Personal, Indoor and Mobile Radio Communications, 2006 IEEE 17th International Symposium on

Conference_Location

Helsinki

Print_ISBN

1-4244-0329-4

Electronic_ISBN

1-4244-0330-8

Type

conf

DOI

10.1109/PIMRC.2006.253975

Filename

4022747