Joint transceiver bit allocation for wireless video communication

摘要

A global bit-allocation algorithm for wireless video communication is presented in this paper. Specifically, a generalized distortion-rate model at macroblock level is first proposed, which reflects the relation among the source coding rates, channel coding rates and the end-to-end distortion consisting of quantization distortion and channel loss distortion compensated by error concealment. Based on this model, a classification algorithm with modified equal mean normalized standard deviation is applied for optimal bit-allocation. Simulation results manifest that the proposed algorithm outperforms conventional bit allocation schemes both in terms of rate-distortion framework and perceptual evaluation.