Power constrained channel optimized vector quantizers used for bandwidth expansion

• This paper deals with algorithms for determining well performing bandwidth expanding joint source-channel coding (JSCC) systems. The JSCC systems are realized as direct source-channel mappings. The algorithms presented are "Power Constrained Channel Optimized Vector Quantizers" (PCCOVQ). The PCCOVQ algorithm is a modified generalized Lloyd algorithm. Theory on PCCOVQ is presented, with the emphasis on bandwidth expansion. Examples and results concerning bandwidth expansion by a factor of 2 and 3 are given.

Subject headings

TEKNIK OCH TEKNOLOGIER  -- Elektroteknik och elektronik -- Telekommunikation (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Electrical Engineering, Electronic Engineering, Information Engineering -- Telecommunications (hsv//eng)

TEKNIK OCH TEKNOLOGIER  -- Elektroteknik och elektronik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)

Keyword

(e

2e) theory

Bandwidth expansion (BWE)

Generalized Lloyd algorithm (GLA)

International symposium

Joint source-channel coding (JSCC) systems

Source channels

vector quantizers

wireless communication systems

Bandwidth

Boolean functions

Cellular telephone systems

Channel coding

Codes (symbols)

Communication

Communication systems

Constrained optimization

Global system for mobile communications

Mobile computing

Optimization

Programming theory

Technical presentations

Telecommunication

Vector quantization

Vectors

Telecommunication systems

Publication and Content Type

ref (subject category)

kon (subject category)