Non-causal error control for wireless video streaming with noncoherent signaling

The existence of large receiver-side buffers in typical video streaming applications allows us to implement non-causal algorithms for video processing at the receiver. We have recently proposed an error control scheme that takes advantage of this fact, and uses backward error concealment to recover lost video data. It was demonstrated that such a scheme can be several times more energy efficient than ARQ over a wireless channel modeled in the capacity-outage framework. In this paper we examine the behavior of non-causal error control (NCEC) with noncoherent signaling over a Rayleigh fading channel. We demonstrate that NCEC remains to be superior to ARQ even in this more realistic setting.