Subvector-based Fast Encoding Algorithm for Vector Quantization
A fast encoding algorithm for vector quantization based on hadamard transform and features of sub vector is presented in this paper.Making use of three characteristics of a subvector: the sum,the norm and the variance,an efficiency five-step eliminating algorithm is introduced,more unnecessary codewords are rejected without the full distance calculation.The simulation results show that the proposed algorithm can greatly reduce the distortion calculation and the computational complexit.
vector quantization hadamard transform codeword search subvector
Shanxue Chen Libin Wu Fangwei Li Feng Du
Communication and Information Engineering College,Chongqing University of Posts and Telecommunications Chongqing 400065,China
国际会议
太原
英文
221-225
2011-02-26（万方平台首次上网日期，不代表论文的发表时间）