Metadata Reduction for Soft Video Delivery

Soft video delivery allows a graceful degradation of video quality matching to user's channel quality. However, existing schemes require a considerable amount of metadata to be transmitted. In this letter, we propose a blind data detection method that recovers video signals from the squared amplitude of received signals, which is almost metadata free. Simulation results show that our proposed method can significantly reduce the metadata overhead, and outperforms the existing soft video delivery scheme by nearly 2 dB. It does not require a time-consuming process to fit signal energy distributions (SED) and video quality can improve gracefully.