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Power-efficient MPEG-4 FGS video transmission over MIMO-OFDM systems

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5 Author(s)
Zhu Ji ; Dept. of Electron. Eng., Tsinghua Univ., Beijing, China ; Qian Zhang ; Zhu, Wenwu ; Zihua Guo
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Orthogonal frequency division multiplexing (OFDM) with multiple antennas makes it possible for efficient transmission of high-speed multimedia over wireless channels. This paper proposes an approach for power-efficient video transmission of MPEG-4 fine granularity scalable (FGS) bit-stream over OFDM systems with multiple antennas at both transmitter and receiver. Our proposed approach minimizes the total distortion while satisfying the constraint of transmission power, which is achieved by optimal power allocation and transmission rate control of power efficient assignment of scalable source to spatial subchannels. The performance of our proposed scheme is compared with one using fixed transmission rate or power allocation. Simulation results show significant performance gain of our approach.

Published in:

Communications, 2003. ICC '03. IEEE International Conference on  (Volume:5 )

Date of Conference:

11-15 May 2003

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