Robust H.263 video transmission over spectrally shaped channels using multicarrier modulation

This work proposes an efficient and robust technique for transmission of entropy coded video over noisy channels, especially for spectrally shaped channels which are commonly used in ADSL environments. Combining multicarrier modulation and the error resilient entropy coding (EREC) technique together, we develop a new loading algorithm which achieves unequal error protection (UEP) by optimally allocating the available channel resources among the subchannels. Without adding any redundancy, the proposed system offers significant improvement over the EREC system. Simulation results on the H.263 video coder over typical spectrally shaped channels which are typical in ADSL are provided.