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On fixed-point implementation of symmetric matrix inversion
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- Ingemarsson, Carl, 1983- (author)
- Linköpings universitet,Datorteknik,Tekniska fakulteten
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- Gustafsson, Oscar, 1973- (author)
- Linköpings universitet,Datorteknik,Tekniska fakulteten
- (creator_code:org_t)
- Piscataway, NJ, USA : IEEE, 2015
- 2015
- English.
- In: Proceedings of the European Conference on Circuit Theory and Design (ECCTD). - Piscataway, NJ, USA : IEEE. - 9781479998777 ; , s. 440-443
- Conference paper (peer-reviewed)
Abstract
Subject headings
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- In this work we explore the trade-offs between established algorithms for symmetric matrix inversion for fixed-point hardware implementation. Inversion of symmetric positive definite matrices finds applications in many areas, e.g. in MIMO detection and adaptive filtering. We explore computational complexity and show simulation results where numerical properties are analyzed. We show that LDLT decomposition combined with equation system solving are the most promising algorithm for fixed-point hardware implementation. We further show that simply counting the number of operations does not establish a valid comparison between the algorithms as the required word lengths differ significantly.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Signalbehandling (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Signal Processing (hsv//eng)
Keyword
- matrix inversion
- fixed point arithmetic
- symmetric matrix
Publication and Content Type
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- kon (subject category)
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