Optimization of the index assignments for multiple description vector quantizers
N. Görtz, P. Leelapornchai · IEEE Transactions on Communications · 2003
The optimization criterion and a practically feasible new algorithm is stated for the optimization of the index assignments of a multiple-description unconstrained vector quantizer with an arbitrary number of descriptions. In the simulations, the index-optimized multiple-description vector quantizer achieves significant gains in source signal-to-noise ratio over scalar multiple description schemes.