Real-Time Traffic Scheduling Algorithm for MIMO-OFDMA Systems

Author

Lei, Haipeng ; Zhang, Xin ; Wang, Yafeng

Author_Institution

Sch. of Telecommun. Eng., Beijing Univ. of Posts & Telecommun., Beijing

fYear

2008

Firstpage

4511

Lastpage

4515

Abstract

A real-time traffic scheduling algorithm is proposed for the downlink of multi-cell and multi-user MIMO-OFDMA systems. This proposed scheduling algorithm takes the spatial and frequency characters of users into account, and transmission antenna selection and modified water-filling power allocation algorithms are adopted in the allocation of space-frequency subchannels. Simulation results show that this algorithm can not only obtain better system throughput, but also lower outage rate of real-time traffic and guarantee the fairness among users.

Keywords

MIMO communication; OFDM modulation; antenna arrays; channel allocation; frequency allocation; frequency division multiple access; multiuser channels; scheduling; telecommunication traffic; transmitting antennas; multiple-input multiple-output system; multiuser MIMO-OFDMA system; orthogonal frequency division multiple access; real-time traffic scheduling algorithm; space-frequency subchannel allocation; transmitting antenna; water-filling power allocation algorithm; Delay; Downlink; MIMO; Radio spectrum management; Real time systems; Receiving antennas; Scheduling algorithm; Telecommunication traffic; Traffic control; Transmitting antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, 2008. ICC '08. IEEE International Conference on

Conference_Location

Beijing

Print_ISBN

978-1-4244-2075-9

Electronic_ISBN

978-1-4244-2075-9

Type

conf

DOI

10.1109/ICC.2008.846

Filename

4533882