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A novel hierarchical QAM-based unequal error protection scheme for H.264/AVC video over frequency-selective fading channels

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4 Author(s)
Peng Li ; State Key Lab. of ISN, Xidian Univ., Xi''an, China ; Yilin Chang ; Nina Feng ; Fuzheng Yang

A novel unequal error protection (UEP) scheme based on the hierarchical quadrature amplitude modulation (QAM) is proposed for H.264/AVC video transmission over frequency selective fading channels. In order to avoid the situation that data with higher priority in the H.264/AVC video streams to be mapped onto subcarriers in deep fading, an OFDM subcarrier classification strategy with two signal-to-noise ratio (SNR) thresholds is presented. Simulation results show that the proposed UEP scheme outperforms the state-of-the-art UEP method by up to 1.6 dB in terms of the quality of the reconstructed video.

Published in:

Consumer Electronics, IEEE Transactions on  (Volume:56 ,  Issue: 4 )

Date of Publication:

November 2010

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