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IEICE Transactions on Communications 2006 E89-B(6):1939-1942; doi:10.1093/ietcom/e89-b.6.1939
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Copyright © 2006 The Institute of Electronics, Information and Communication Engineers

Regular Section -- Letters -- Wireless Communication Technologies

Joint Transmit Rate, Power and Antenna Allocation for MIMO Systems with Multimedia Traffic*

Kai ZHANG and Zhisheng NIU

The authors are with the State Key Lab on Microwave and Digital Communications, Department of Electronic Engineering, Tsinghua University, Beijing 100084, China. E-mail: zhangkai98{at}mails.tsinghua.edu.cn, E-mail: niuzhs{at}tsinghua.edu.cn

This paper proposes an adaptive transmission scheme for MIMO systems to provide different bit error rates and transmission rates for multimedia traffic. The adaptive transmission scheme allocates antennas, rate and power jointly according to the feedback information to satisfy the diverse QoS requirements of the multimedia traffic. Furthermore, an efficient search algorithm with low complexity is proposed for practical implementation. Simulation results show that the proposed scheme improves the spectral efficiency while guaranteeing the QoS requirements of multimedia traffic. Moreover, the proposed search algorithm achieves close optimal performance with great complexity reduction.

Key Words: adaptive transmission, MIMO systems, multimedia traffic

Manuscript received November 15, 2005. Manuscript revised December 23, 2005.

* This paper has been partially presented at ITC19.


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