Search for dissertations about: "channel optimized vector quantization"

Showing result 1 - 5 of 7 swedish dissertations containing the words channel optimized vector quantization.

2. 1. Interframe quantization of spectrum parameters in speech coding

   Author : Jan Lindén; Chalmers tekniska högskola; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; spectrum coding; memory vector quantization; interframe coding; speech coding; channel optimized vector quantization; linear predictive vector quantization; finite state vector quantization; line spectrum frequencies;

   Abstract : .... READ MORE

4. 2. On Soft Decoding and Robust Vector Quantization

   Author : Mikael Skoglund; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; speech and image coding; intersymbol interference; Rayleigh fading; soft decoding; CDMA; index assignment; Hadamard transform; channel optimized VQ; robust VQ; combined source-channel coding; vector quantization VQ ; noisy channels;

   Abstract : This thesis considers vector quantization for noisy channels. Vector quantization (VQ) is an important technique for block-based source coding, with applications in, e.g., speech and image coding. READ MORE

5. 3. On error-robust source coding with image coding applications

   Author : Tomas Andersson; Mikael Skoglund; Astrid Lundmark; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; source coding; channel coding; joint source-channel coding; multiple description coding; image coding; vector quantization; channel optimized vector quantization; Telecommunication; Telekommunikation;

   Abstract : This thesis treats the problem of source coding in situations where the encoded data is subject to errors. The typical scenario is a communication system, where source data such as speech or images should be transmitted from one point to another. A problem is that most communication systems introduce some sort of error in the transmission. READ MORE

6. 4. Source and Channel Coding for Audiovisual Communication Systems

   Author : Moo Young Kim; Bastiaan Kleijn; Richard Heusdens; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Telekommunikation; Information theory; high-rate theory; source coding; channel coding; quantization; Telekommunikation; Telecommunication; Telekommunikation;

   Abstract : Topics in source and channel coding for audiovisual communication systems are studied. The goal of source coding is to represent a source with the lowest possible rate to achieve a particular distortion, or with the lowest possible distortion at a given rate. Channel coding adds redundancy to quantized source information to recover channel errors. READ MORE

7. 5. Source and Channel Coding for Compressed Sensing and Control

   Author : Amirpasha Shirazinia; Mikael Skoglund; Pier Luigi Dragotti; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Source coding; quantization; channel coding; compressed sensing; control; Electrical Engineering; Elektro- och systemteknik;

   Abstract : Rapid advances in sensor technologies have fueled massive torrents of data streaming across networks. Such large volume of information, indeed, restricts the operational performance of data processing, causing inefficiency in sensing, computation, communication and control. READ MORE