Vector Superposition Quadratic Gaussian Wyner-Ziv Coding
Date Issued
2008
Date
2008
Author(s)
Lin, Song-Jheng
Abstract
We present practical codes designed for Wyner-Ziv coding in the quadratic Gaussian case. The structure of Wyner-Ziv coding is first introduced and discussed. Wyner-Ziv coding in the quadratic Gaussian case is then analyzed. This case is of interest since the rate distortion bound in this case is equal to the case that side information is known at both the encoder and decoder. For Wyner-Ziv coding in the quadratic Gaussian case, we propose a practical code design, which is based on superposition coding. This technique is named superposition quadratic Gaussian Wyner-Ziv coding and is abbreviated as SQG-WZC. SQG-WZC is able to achieve the Wyner-Ziv rate distortion bound by using random coding and joint typicality. Finally, we extend SQG-WZC to the vector case and show that the Wyner-Ziv rate distortion bound can also be achieved by vector SQG-WZC.
Subjects
VSQG-WZC
Wyner-Ziv coding
rate-distortion bound
superpositon coding
quadratic Gaussian case
Type
thesis
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