Heterogeneous Error Protection of H.264/AVC Video Using Hierarchical 16-QAM

Heterogeneous error protection (HEP) of H.264/AVC coded video is investigated using hierarchical quadrature amplitude modulation (HQAM), which takes into consideration the non- uniformly distributed importance of intracoded frame (I-frame) and predictive coded frame (P-frame) as well as the sensitivity of the coded bitsream against transmission errors. The HQAM constellation are used to give different degrees of error protection of the most important information of the video content. The performance of the transmission system is evaluated under additive Gaussion Noise (AWGN). The simulation results indicate that the strategy produces a high quality of the reconstructed video data compared with uniform protection.