| 分布式信源矢量量化性能分析 |
| |
| 引用本文： | 王四平,刘志文,徐友根.分布式信源矢量量化性能分析[J].北京理工大学学报,2007,27(10):911-914. |
| |
| 作者姓名： | 王四平 刘志文 徐友根 |
| |
| 作者单位： | 北京理工大学,信息科学技术学院电子工程系,北京,100081;北京理工大学,信息科学技术学院电子工程系,北京,100081;北京理工大学,信息科学技术学院电子工程系,北京,100081 |
| |
| 摘 要： | 研究分布式信源量化维数与量化性能之间的定量关系. 通过量化器输出点密度函数分别描述了量化码率和失真,推导出量化码率、失真、维数之间的关系,并分析了量化渐近性能. 得到量化维数同量化性能之间的关系函数. 仿真结果表明,随着维数增加,量化率失真性能渐进逼近Wyner-Ziv限. 在较低维数情况下,分布式信源矢量量化也能较好地逼近Wyner-Ziv限,即可以用低复杂度的低维量化器达到性能的需求.
|
| 关 键 词： | 分布式信源 矢量量化 码率-失真函数 Wyner-Ziv限 |
| 文章编号： | 1001-0645（2007）10-0911-04 |
| 收稿时间： | 2007/3/15 0:00:00 |
| 修稿时间： | 2007-03-15 |
Performance Analysis for Vector Quantization of Distributed Source |
| |
| WANG Si-ping,LIU Zhi-wen and XU You-gen.Performance Analysis for Vector Quantization of Distributed Source[J].Journal of Beijing Institute of Technology(Natural Science Edition),2007,27(10):911-914. |
| |
| Authors: | WANG Si-ping LIU Zhi-wen and XU You-gen |
| |
| Institution: | Department of Electronic Engineering, School of Information Science and Technology, Beijing Institute of Technology, Beijing 100081, China |
| |
| Abstract: | To study the quantitative relation of dimension and complexity.The rate and distortion of distributed source vector quantization are characterized and analyzed through the point density function of a quantizer.The function of rate,distortion,dimension is then derived,and the asymptotic performance of vector quantization is analyzed.The function of dimension and performance is then obtained.Simulation results showed that rate-distortion performance can approach WynerZiv bound gradually with increasing dimension.The performance of distributed source vector quantization can approach Wyner-Ziv bound in the lower dimension case.So performance requirements can be met by low-dimension quantizer of less complexity. |
| |
| Keywords: | distributed source vector quantization rate-distortion function Wyner-Ziv bound |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《北京理工大学学报》浏览原始摘要信息 |
| 点击此处可从《北京理工大学学报》下载免费的PDF全文 |
|
