Phase-shifted interpolation for complex signals

Zhang, J; Huang, X; Suzuki, H

Phase-shifted interpolation for complex signals

Zhang, J

Huang, X

Suzuki, H

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Publication Type:: Journal Article
Citation:: IEEE Communications Letters, 2012, 16 (9), pp. 1466 - 1469
Issue Date:: 2012-07-27

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Field	Value	Language
dc.contributor.author	Zhang, J https://orcid.org/0000-0002-6102-3762	en_US
dc.contributor.author	Huang, X https://orcid.org/0000-0001-6869-5732	en_US
dc.contributor.author	Suzuki, H	en_US
dc.date.issued	2012-07-27	en_US
dc.identifier.citation	IEEE Communications Letters, 2012, 16 (9), pp. 1466 - 1469	en_US
dc.identifier.issn	1089-7798	en_US
dc.identifier.uri	http://hdl.handle.net/10453/113861
dc.description.abstract	This letter proposes simple algorithms for computing a phase shift term, which is introduced to greatly improve the accuracy of complex signal interpolation, applicable to any interpolator. Based on a cost function targeting at minimizing the phase transition between adjacent samples, the phase shift term can be easily computed using either signal statistics obtained in advance or known base samples in real time. Simulation results, exemplified for channel interpolation in OFDM systems, show that the proposed phase estimators can significantly improve the interpolation performance for various interpolators such as spline, low-pass filter, and linear and cubic polynomial interpolators, compared to the case without phase shifting. © 2012 IEEE.	en_US
dc.relation.ispartof	IEEE Communications Letters	en_US
dc.relation.isbasedon	10.1109/LCOMM.2012.071612.121037	en_US
dc.subject.classification	Networking & Telecommunications	en_US
dc.title	Phase-shifted interpolation for complex signals	en_US
dc.type	Journal Article
utslib.citation.volume	9	en_US
utslib.citation.volume	16	en_US
utslib.for	0805 Distributed Computing	en_US
utslib.for	0906 Electrical and Electronic Engineering	en_US
utslib.for	1005 Communications Technologies	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Electrical and Data Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - GBDTC - Global Big Data Technologies
utslib.copyright.status	closed_access
pubs.issue	9	en_US
pubs.publication-status	Published	en_US
pubs.volume	16	en_US

Abstract:

This letter proposes simple algorithms for computing a phase shift term, which is introduced to greatly improve the accuracy of complex signal interpolation, applicable to any interpolator. Based on a cost function targeting at minimizing the phase transition between adjacent samples, the phase shift term can be easily computed using either signal statistics obtained in advance or known base samples in real time. Simulation results, exemplified for channel interpolation in OFDM systems, show that the proposed phase estimators can significantly improve the interpolation performance for various interpolators such as spline, low-pass filter, and linear and cubic polynomial interpolators, compared to the case without phase shifting. © 2012 IEEE.

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http://hdl.handle.net/10453/113861