High Dimension Adaptive Vector Quantization

It is well known that block coding systems have displayed better performance at a given bit rate, or require lower bit rate at a given performance criteria then scalar coding schemes [1-5]. For block coding systems Vector Quantization (VQ) has achieved performance near rate-distortion function [6]. The major disadvantage of VQ with stationary codebook was substantial degradation in quality for out-of-training-sequence inputs. Also the training requirements of regular VQ consumes tremendous amounts of CPU cycles, thereby making it unsuitable for real-time adaptation for digital communication applications.