Title :
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
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;
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
DOI :
10.1109/ICC.2008.846
