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Article Dans Une Revue Journal of Visual Communication and Image Representation Année : 2011

A solution to efficient power allocation for H.264/SVC video transmission over a realistic MIMO channel using precoder designs

Wassim Hamidouche
SIC
Clency Perrine
SIC
Christian Olivier
  • Fonction : Auteur
  • PersonId : 921174
SIC
Yannis Pousset
SIC

Résumé

In this paper we propose a novel scheme for real time SVC-based video transmission over MIMO channels in the context of Joint Source Channel Coding (JSCC). This scheme compares the transmission of the H.264/SVC video over four precoder solutions, namely Max-SNR, WF, QoS and E-dmin. We exploit the high flexibility of the QoS precoder to minimize the total distortion of the received video. The proposed adaptive QoS precoder takes into account the scalability of the H.264/SVC standard jointly with the instantaneous MIMO channel statue. Finally, the proposed scheme is evaluated over both statistical and time Optimal power allocation varying realistic MIMO channels. This study provides the performance of these four precoder designs in term of BER, ML decoder complexity and the quality of the received video. We show that the precoder solutions providing the best BER MIMO channels performance are not usually the most appropriate for real time video transmission. However, the adaptive QoS precoder which uses three configurations, by considering both the importance of the video bit-QoS precoder stream and the channel statue, provides the best Rate-Distortion performance regardless the channel conditions. We assess the accuracy of these four precoder solutions against channel estimation errors over time varying realistic MIMO channel. The results shows that the adaptive QoS precoder remains robust against channel estimation errors even at high mobility speed.

Dates et versions

hal-00577149 , version 1 (16-03-2011)

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Citer

Wassim Hamidouche, Clency Perrine, Christian Olivier, Yannis Pousset. A solution to efficient power allocation for H.264/SVC video transmission over a realistic MIMO channel using precoder designs. Journal of Visual Communication and Image Representation, 2011, 22 (6), pp.563-574. ⟨10.1016/j.jvcir.2011.02.003⟩. ⟨hal-00577149⟩
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