Joint optimized transmission based on M-QAM and UEP for wireless scalable video

Scalable video coding has the ability to transmit partial bit streams which can be used to reconstruct lower quality video according to the channel status to adapt to channel quality fluctuations.A rate-distortion optimized wireless video streaming algorithm was developed which considers the allocation of multiple quadrature amplitude modulation(M-QAM) sub-channels,the number of scalable video layers,and the channel coding protection priorities for various layers.Comparisons with the equal error protection(EEP) without consideration of prioritized sub-channels show that the algorithm provides 1.5-2 dB gain with robust video streaming over wireless channels.