On channel-constrained vector quantization and index assignment for discrete memoryless channels

This correspondence introduces an approach to the design of channel robust vector quantizers. Design criteria are derived based on a new expression for the channel distortion as a function of the code vectors of the quantizer. The introduced framework for design and analysis holds for arbitrary discrete memoryless channels. Simulations demonstrate good performance. The correspondence also presents new results regarding the channel distortion as a function of the index assignment given to the code vectors of a vector quantizer.