Title :
A QoS-Guarantee Resource Allocation Scheme in Multi-User MIMO-OFDM Systems
Author :
Tian Hui ; Wang Shuang ; Gao Youjun ; Sun Qiaoyun ; Zhang Ping
Author_Institution :
Beijing Univ. of Posts & Telecommun., Beijing
Abstract :
In this paper, a new QoS-Guarantee resource allocation scheme is proposed for multi-user MIMO- OFDM systems. Based on channel state information (CSI) , the base station (BS) employs singular value decomposition (SVD) to transmit the MIMO channel into parallel eigenmode subchannels for each subcarrier, and then subcarriers, bits and power are dynamically allocated to users according to user´s support subcarrier rate, the queue status of traffics and user´s quality of service (QoS) requirement. Moreover, subcarrier reallocation is executed in order to heighten user´s transmission rate and improve the utilization of system´s resources. Simulation results demonstrate the superior performance of our proposed scheme, which can not only guarantee user´s QoS requirement, keep user fairness, but also can greatly improve the cell throughput.
Keywords :
MIMO communication; channel allocation; frequency division multiplexing; multiuser channels; quality of service; resource allocation; singular value decomposition; QoS-guarantee resource allocation scheme; base station; channel state information; multi-user MIMO-OFDM systems; parallel eigenmode subchannels; singular value decomposition; subcarrier reallocation; Bandwidth; Channel state information; Fading; MIMO; OFDM; Quality of service; Resource management; Signal to noise ratio; Throughput; Traffic control;
Conference_Titel :
Vehicular Technology Conference, 2007. VTC-2007 Fall. 2007 IEEE 66th
Conference_Location :
Baltimore, MD
Print_ISBN :
978-1-4244-0263-2
Electronic_ISBN :
1090-3038
DOI :
10.1109/VETECF.2007.380
