Unequal error protection (UEP) of wavelet coded video using multi-layered Hierarchical QAM

In this paper, the performance of unequal error protection (UEP) scheme for wavelet coded video using multi-layered 64-Hierarchical QAM (64-HQAM) is presented. Depending on the error sensitivity of coded video bitstream against channel errors, the bitstream is partitioned into multiple sub-streams. The most sensitive sub-stream is assigned highest protection while least sensitive are assigned lowest protection by adjusting the distance between points in the constellation diagram of HQAM. The performance of the communication system is evaluated for Additive White Gaussian Noise (AWGN) channel. The simulation results demonstrate that three-layer UEP provides increased Quality-of-Service (QoS) compared to level two-layer UEP.