Change search
ReferencesLink to record
Permanent link

Direct link
Sigma-delta based techniques for future multi-standard wireless radios
KTH, School of Information and Communication Technology (ICT), Microelectronics and Information Technology, IMIT.
2005 (English)Doctoral thesis, monograph (Other scientific)
Abstract [en]

Improvements in process technology and design innovations have resulted in compact and cost effective digital baseband solutions. The radio part, however, has remained a bottleneck in terms of chip area and power consumption as the feature size of analog devices does not directly benefit from scaling. With the addition of yet more standards into emerging products, the requirements of future radios will extend over characteristic performance features into demands of programmable and reconfigurable hardware for radios covering multiple frequency bands. Hence, a guideline in the design of such radios is a large degree of hardware sharing.

The thesis investigates the application of sigma-delta modulation to arising multistandard wireless radios. First, it reviews principles in wireless radios, such as selected modulation and access techniques. It also examines several communication standards of personal wireless radios as well as common receiver architectures for their implementation. This is followed by general considerations and background information about sigma-delta modulators. In the third and fourth chapter, implementations to two blocks of a wireless radio receiver system are suggested: An architecture for a frequency synthesizer and an implementation of an analog-to-digital converter.

In the first contribution, the thesis develops a novel concept for frequency synthesis that is more suitable for multi-band, multi-standard radio architectures, achieving a large amount of hardware sharing among different wireless standards. As a second pillar, the thesis contributes with the design of a dual-standard sigma-delta modulator for data conversion within a radio receiver. Parts of the work concerning the dual-standard modulator are embodied in a granted swedish patent.

Place, publisher, year, edition, pages
Stockholm: KTH , 2005. , xvi, 97 p.
Trita-IMIT. LECS, ISSN 1651-4076 ; 2005:07
National Category
Condensed Matter Physics
URN: urn:nbn:se:kth:diva-459ISBN: 91-7178-170-6OAI: diva2:13008
Public defence
2005-11-03, Sal E, KTH-Forum, 14:00
QC 20100830Available from: 2005-10-21 Created: 2005-10-21 Last updated: 2010-08-30Bibliographically approved

Open Access in DiVA

fulltext(727 kB)6183 downloads
File information
File name FULLTEXT01.pdfFile size 727 kBChecksum SHA-1
Type fulltextMimetype application/pdf

Search in DiVA

By author/editor
Albrecht, Steffen
By organisation
Microelectronics and Information Technology, IMIT
Condensed Matter Physics

Search outside of DiVA

GoogleGoogle Scholar
Total: 6183 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Total: 1234 hits
ReferencesLink to record
Permanent link

Direct link