Optimal power allocation for minimizing visual distortion over MIMO communication systems

Authors:
Jincheol Park;Uk Jang;Taegeun Oh;Sanghoon Lee;Alan C. Bovik
Affiliations:
Wireless Network Lab., Center for IT, Yonsei University, Seoul, Korea;Electronics and Telecommunications Research Institute, Taejeon, Korea;Wireless Network Lab., Center for IT, Yonsei University, Seoul, Korea;Wireless Network Lab., Center for IT, Yonsei University, Seoul, Korea;Department of Electrical and Computer Engineering, The University of Texas at Austin, Austin, TX
Venue:
ICIP'09 Proceedings of the 16th IEEE international conference on Image processing
Year:
2009

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Abstract

A recent dynamic increase in demand for wireless multimedia services has greatly accelerated the research on cross layer optimization techniques for transmitting multimedia data over wireless channel. In this paper, we explore a novel theoretical approach for joint optimization between the rate distortion (RD) of H.264/AVC video and the link-capacity of MIMO parallel subchannels. We obtain the optimal power level of subchannels through an optimization problem to minimize total visual distortion. In the simulation results, compared to the water filling (WF) method, the proposed scheme provides better results in aspects of visual quality in the face of sum rate loss.