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Reduced-Rank Shift-Invariant Technique and Its Application for Synchronization and Channel Identification in UWB Systems
- Source :
- EURASIP Journal on Wireless Communications and Networking, Vol 2008 (2009), EURASIP Journal on Wireless Communications and Networking, Vol 2008, Iss 1, p 892193 (2008)
- Publication Year :
- 2009
- Publisher :
- SpringerOpen, 2009.
-
Abstract
- We investigate reduced-rank shift-invariant technique and its application for synchronization and channel identification in UWB systems. Shift-invariant techniques, such as ESPRIT and the matrix pencil method, have high resolution ability, but the associated high complexity makes them less attractive in real-time implementations. Aiming at reducing the complexity, we developed novel reduced-rank identification of principal components (RIPC) algorithms. These RIPC algorithms can automatically track the principal components and reduce the computational complexity significantly by transforming the generalized eigen-problem in an original high-dimensional space to a lower-dimensional space depending on the number of desired principal signals. We then investigate the application of the proposed RIPC algorithms for joint synchronization and channel estimation in UWB systems, where general correlator-based algorithms confront many limitations. Technical details, including sampling and the capture of synchronization delay, are provided. Experimental results show that the performance of the RIPC algorithms is only slightly inferior to the general full-rank algorithms.
- Subjects :
- Theoretical computer science
Computational complexity theory
Computer Networks and Communications
Computer science
lcsh:Electronics
Sampling (statistics)
lcsh:TK7800-8360
Synchronization
Computer Science Applications
lcsh:Telecommunication
lcsh:TK5101-6720
Signal Processing
Principal component analysis
Matrix pencil
Invariant (mathematics)
Algorithm
Subjects
Details
- Language :
- English
- ISSN :
- 16871499 and 16871472
- Volume :
- 2008
- Database :
- OpenAIRE
- Journal :
- EURASIP Journal on Wireless Communications and Networking
- Accession number :
- edsair.doi.dedup.....67bac03c1087278ee67066f37d189e92