Analysis and Design of Multiple Description Codes for Wired and Wireless Channels
The increasing demand on multimedia communication over wired and wireless networks
imposes a continuous pressure on developing more robust coding schemes.
Recently, joint source-channel coding with multiple description codes has become
an attractive solution to ensure robust communication over noisy channels. In this
thesis, we conduct analysis and design of multiple description codes for wired and
wireless communication channels. First, a multiple description quantizer (MDQ) design
method based on channel optimized quantization is developed. The proposed
multiple channel optimized quantizer design scheme does not require index assignment
and offers the benefit of resilience to both symbol and erasure errors. Low complexity
MDQ is further explored and used to build a multiple description audio coder.
Next, the advantages of employing multiple description coding over multiple-input
multiple-output wireless channels are investigated. Information theoretical analysis
is conducted and practical MDQ codes are designed. Finally, a new E-model based
performance measure accounting for both rate-distortion performance and delay impairment
is proposed to compare multiple description coding and layered coding for
communication over packet networks.
Advisor:Queen's University (Kingston, Ont.). Theses (Queen's University (Kingston, Ont.)); Wai-Yip Geoffrey Chan; Electrical & Computer Engineering
Source Type:Master's Thesis
Keywords:multiple description coding
Date of Publication:09/28/2007