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Distortion Minimization Resource Allocation Scheme for Multiuser Video Transmission Over OFDM Network with Proportional Rates  

Ha, Ho-Jin (연세대학교 전기전자공학부)
Yim, Chang-Hoon (건국대학교 인터넷미디어공학부)
Kim, Young-Yong (연세대학교 전기전자공학부)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.33, no.7B, 2008 , pp. 583-591 More about this Journal
Abstract
This paper proposes a resource allocation algorithm for minimizing the overall distortion of multiple users in orthogonal frequency division multiplex (OFDM). The proposed algorithm exploits the diversity of multiuser and the rate-distortion function using packet distortion model in a system with limited resources. We first induce a rate-distortion function considering error concealment and error propagation properties of H.264 video structures. Then we perform adaptive resource allocation utilizing multiuser diversity for minimizing the overall video quality degradation. We also consider the proportional rate which is pre-determined for each user. Simulation results show that compared to the previous time division multiple access method and the resource allocation method maximizing data rate, the proposed rate allocation algorithm substantially improves the received video quality.
Keywords
Multiuser orthogonal Frequency Division Multiplex(OFDM); Adaptive Resource Allocation; Rate Distortion Function; Multiple Video Transmission; H.264;
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Times Cited By KSCI : 1  (Citation Analysis)
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