This paper proposes three methods to estimate the distortion
deriving from packet losses in wireless video communication. The
proposed models take into account the short-term properties of the
encoded video sequences and the properties of the wireless links.
A suitable set of functions is adopted to model the distortion
envelope resulting from multiple losses. The performance of the
employed models, which depends on the average Packet Loss Rate
(PLR), is compared with the actual distortion, evaluated by
decoding the received sequence with a properly designed, robust
decoder. Numerical results confirm the accuracy of the proposed
models, that are able to closely approximate the actual Mean
Square Error (MSE) behavior for a wide range of loss rates. Some
applications of the proposed algorithms are also presented in the
paper.
