PAPR reduction for carrier aggregated uplink in LTE-A system

An, L; Zhu, X; Guo, G; Wu, L

PAPR reduction for carrier aggregated uplink in LTE-A system

An, L Zhu, X Guo, G Wu, L

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Publication Type:: Conference Proceeding
Citation:: International Conference on Communication Technology Proceedings, ICCT, 2013, pp. 271 - 275
Issue Date:: 2013-01-01

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Field	Value	Language
dc.contributor.author	An, L	en_US
dc.contributor.author	Zhu, X	en_US
dc.contributor.author	Guo, G	en_US
dc.contributor.author	Wu, L https://orcid.org/0000-0002-8577-0367	en_US
dc.date.issued	2013-01-01	en_US
dc.identifier.citation	International Conference on Communication Technology Proceedings, ICCT, 2013, pp. 271 - 275	en_US
dc.identifier.isbn	9781479900749	en_US
dc.identifier.uri	http://hdl.handle.net/10453/120775
dc.description.abstract	The adoption of Carrier Aggregation (CA) technology enables the LTE-Advanced (LTE-A) system to support very-high-data-rate transmission over wide frequency bandwidths and to keep the backward compatibility of LTE system. Nevertheless, the authors have to deal with the significant increase of peak-to-average power ratio (PAPR) associated with the carrier aggregation, which determines the efficiency of Power Amplifier (PA) and the coverage of the terminal. This paper proposes an improved Selected Mapping (SLM) scheme to reduce PAPR of the LTE-A uplink data and demodulation reference signal (DMRS) symbols by 2 to 3 dB for different component carrier (CC) numbers and modulation modes, in which the signaling overhead of conventional SLM is eliminated by exploiting the features of DMRS. The linear property of Inverse Fast Fourier Transformation (IFFT) is used to reduce the computational complexity of SLM. The proposed scheme with 4 initial phase sequences reduces the complex multiplications by 63.5% and the complex additions by 68.2% compared with the conventional SLM scheme with 16 phase sequences while keeping the similar PAPR reduction performance. © 2013 IEEE.	en_US
dc.relation.ispartof	International Conference on Communication Technology Proceedings, ICCT	en_US
dc.relation.isbasedon	10.1109/ICCT.2013.6820385	en_US
dc.title	PAPR reduction for carrier aggregated uplink in LTE-A system	en_US
dc.type	Conference Proceeding
utslib.for	0805 Distributed Computing	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
utslib.copyright.status	closed_access
pubs.publication-status	Published	en_US

Abstract:

The adoption of Carrier Aggregation (CA) technology enables the LTE-Advanced (LTE-A) system to support very-high-data-rate transmission over wide frequency bandwidths and to keep the backward compatibility of LTE system. Nevertheless, the authors have to deal with the significant increase of peak-to-average power ratio (PAPR) associated with the carrier aggregation, which determines the efficiency of Power Amplifier (PA) and the coverage of the terminal. This paper proposes an improved Selected Mapping (SLM) scheme to reduce PAPR of the LTE-A uplink data and demodulation reference signal (DMRS) symbols by 2 to 3 dB for different component carrier (CC) numbers and modulation modes, in which the signaling overhead of conventional SLM is eliminated by exploiting the features of DMRS. The linear property of Inverse Fast Fourier Transformation (IFFT) is used to reduce the computational complexity of SLM. The proposed scheme with 4 initial phase sequences reduces the complex multiplications by 63.5% and the complex additions by 68.2% compared with the conventional SLM scheme with 16 phase sequences while keeping the similar PAPR reduction performance. © 2013 IEEE.

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