Presentation	2008-11-19 Investigation on Channel Structures for Layered OFDMA Radio Access in LTE-Advanced Yoshihisa Kishiyama, Nobuhiko Miki, Motohiro Tanno, Kenichi Higuchi, Mamoru Sawahashi,
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Abstract(in English)	This paper presents an investigation on radio parameters and physical channel structures for proposed Layered OFDMA radio access in Long Term Evolution (LTE)-Advanced, which is the candidate radio interface for IMT-Advanced in the 3^ Generation Partnership Project (3GPP) as well as an advanced radio interface of LTE. Layered OFDMA comprises layered transmission bandwidth assignment, support for layered environments, and a layered control signalling structure, and can efficiently support a wider bandwidth maintaining the backward compatibility with LTE and achieve a higher system performance according to various radio environments. Furthermore, we propose radio parameters in frequency domain for Layered OFDMA radio access to achieve both efficient transmission/reception using a single Fast Fourier Transform (FFT) and simultaneous access with existing LTE user equipments (UEs). Moreover, we propose basic physical channel structures for Layered OFDMA radio access to provide optimum signal structures for LTE-Advanced UE with wider transmission/reception bandwidth capability.
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Keyword(in English)	LTE-Advanced / Layered OFDMA / radio parameters / channel structure
Paper #	RCS2008-137
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Committee	RCS
Conference Date	2008/11/12(1days)
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Paper Information
Registration To	Radio Communication Systems (RCS)
Language	JPN
Title (in Japanese)	(See Japanese page)
Sub Title (in Japanese)	(See Japanese page)
Title (in English)	Investigation on Channel Structures for Layered OFDMA Radio Access in LTE-Advanced
Sub Title (in English)
Keyword(1)	LTE-Advanced
Keyword(2)	Layered OFDMA
Keyword(3)	radio parameters
Keyword(4)	channel structure
1st Author's Name	Yoshihisa Kishiyama
1st Author's Affiliation	Radio Access Network Development Department, NTT DOCOMO, INC.()
2nd Author's Name	Nobuhiko Miki
2nd Author's Affiliation	Radio Access Network Development Department, NTT DOCOMO, INC.
3rd Author's Name	Motohiro Tanno
3rd Author's Affiliation	Radio Access Network Development Department, NTT DOCOMO, INC.
4th Author's Name	Kenichi Higuchi
4th Author's Affiliation	Department of Science and Engineering, Tokyo University of Science
5th Author's Name	Mamoru Sawahashi
5th Author's Affiliation	Department of Knowledge Engineering, Musashi Institute of Technology
Date	2008-11-19
Paper #	RCS2008-137
Volume (vol)	vol.108
Number (no)	305
Page	pp.pp.-
#Pages	6
Date of Issue