A frequency domain scheduling algorithm for IEEE 802.16 OFDMA systems

Author

Zheng, Yousi ; Zhong, Xiaofeng ; Wan, Lei ; Kang, Jianfeng

Author_Institution

Dept. of Electron. Eng., Tsinghua Univ., Beijing

fYear

2009

Firstpage

1

Lastpage

5

Abstract

AMC (adaptive modulation and coding) is an important technology adopted by IEEE 802.16. Based on AMC, we introduce a frequency domain scheduling and subchannel resource allocation algorithm (FDSA) in this paper for IEEE 802.16 OFDMA systems. According to this algorithm which is applied in physical layer, the paper also proposes a simple AMC link adaptive mechanism. In different conditions, the throughput performance simulation results among PUSC, AMC without FDSA, and AMC with FDSA are also shown in both downlink (DL) mode and uplink (UL) mode. Comparison among this mechanism with AMC under other modulations and code rates and PUSC shows link adaptive mechanism can give a dramatic improvement for IEEE 802.16 OFDMA systems.

Keywords

OFDM modulation; WiMax; adaptive codes; adaptive modulation; channel allocation; frequency division multiple access; frequency-domain analysis; modulation coding; resource allocation; scheduling; AMC link adaptive mechanism; FDSA; IEEE 802.16 OFDMA systems; WiMax; adaptive coding; adaptive modulation; downlink mode; frequency domain scheduling algorithm; physical layer; subchannel resource allocation algorithm; uplink mode; Communication standards; Constraint optimization; Frequency domain analysis; Job shop scheduling; Modulation coding; Performance analysis; Quality of service; Resource management; Scheduling algorithm; Throughput; AMC; IEEE 802.16; frequency domain scheduling algorithm; link adaptive mechanism;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless and Optical Communications Networks, 2009. WOCN '09. IFIP International Conference on

Conference_Location

Cairo

Print_ISBN

978-1-4244-4704-6

Electronic_ISBN

978-1-4244-3474-9

Type

conf

DOI

10.1109/WOCN.2009.5010524

Filename

5010524