JOINT SCALAR QUANTITY QUANTIFICATION METHOD AND METHOD OF SELF-ADAPTED SCALAR QUANTIFICATION LEVEL ADJUSTMENT

摘要

PPROBLEM TO BE SOLVED: To overcome the defect of different scalar quantization in the prior art where a statistical interrelation among the sample values of source is not taken into account. PSOLUTION: A method for joint scalar quantization is disclosed, characterized by: transforming the original variables into intermediate variables according to a special transforming relationship; according to the variance of the intermediate variables, quantizing, feedbacking and transmitting the intermediate variables; and when the original variables are needed, transforming the intermediate variables into the original variables according to the special transforming relationship. Two schemes about the intermediate variables quantization are also provided to adapt to the different system requirements. Further, based on the joint scalar quantization schemes the above, two methods for adaptively adjusting scalar quantization level according to the interrelation among signals are provided. PCOPYRIGHT: (C)2009,JPO&INPIT