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Paper Abstract and Keywords
Presentation 2012-06-22 10:00
Investigation on Frequency Diversity Effects for Various Transmission Schemes Using Frequency Domain Equalizer in DFT-Precoded OFDMA
Lianjun Deng (Tokyo City Univ.), Teruo Kawamura (NTT DOCOMO), Hidekazu Taoka (DOCOMO Europe Labs.), Mamoru Sawahashi (Tokyo City Univ.) RCS2012-59
Abstract (in Japanese) (See Japanese page) 
(in English) This paper presents frequency diversity effects of localized transmission, clustered transmission, and intra-subframe frequency hopping (FH) using frequency domain equalizer (FDE) for Discrete Fourier Transform (DFT)-precoded Orthogonal Frequency Division Multiple Access (OFDMA). In the evaluations, we employ the normalized frequency mean square covariance (NFMSV) as a measure of frequency diversity effect, i.e., randomization level of frequency domain interleaving associated with turbo code. Link-level computer simulation results show that frequency diversity is very effective in decreasing the required average received signal-to-noise power ratio (SNR) at the target average block error rate (BLER) according to the increase in the entire frequency region in the DFT-precoded OFDMA using linear minimum mean square error (LMMSE) based FDE. Moreover, we show that the NFMSV is an accurate measure of frequency diversity effect for localized transmission in terms of the average BLER and that the NFMSV for the entire frequency region also approximates the frequency diversity effect for clustered transmission well. Finally, we show that the effect of intra-subframe FH is saturated at the relatively narrow FH separation and that there is no close relationship between FH separation and the NFMSV for the intra-subframe FH.
Keyword (in Japanese) (See Japanese page) 
(in English) Mobile communications / Single-carrier FDMA / Frequency diversity / NFMSV / Localized transmission / / /  
Reference Info. IEICE Tech. Rep., vol. 112, no. 89, RCS2012-59, pp. 93-98, June 2012.
Paper # RCS2012-59 
Date of Issue 2012-06-14 (RCS) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
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Conference Information
Committee RCS  
Conference Date 2012-06-21 - 2012-06-22 
Place (in Japanese) (See Japanese page) 
Place (in English) Hakodate City Central Library 
Topics (in Japanese) (See Japanese page) 
Topics (in English) First Presentation in IEICE Technical Committee, Railroad Communications, Inter-Vehicle Communications, Road to Vehicle Communications, Resource Control, Scheduling, Wireless Communication Systems, etc. 
Paper Information
Registration To RCS 
Conference Code 2012-06-RCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Investigation on Frequency Diversity Effects for Various Transmission Schemes Using Frequency Domain Equalizer in DFT-Precoded OFDMA 
Sub Title (in English)  
Keyword(1) Mobile communications  
Keyword(2) Single-carrier FDMA  
Keyword(3) Frequency diversity  
Keyword(4) NFMSV  
Keyword(5) Localized transmission  
1st Author's Name Lianjun Deng  
1st Author's Affiliation Tokyo City University (Tokyo City Univ.)
2nd Author's Name Teruo Kawamura  
2nd Author's Affiliation NTT DOCOMO (NTT DOCOMO)
3rd Author's Name Hidekazu Taoka  
3rd Author's Affiliation DOCOMO Communications Laboratories Europe GmbH (DOCOMO Europe Labs.)
4th Author's Name Mamoru Sawahashi  
4th Author's Affiliation Tokyo City University (Tokyo City Univ.)
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Date Time 2012-06-22 10:00:00 
Presentation Time 20 
Registration for RCS 
Paper # IEICE-RCS2012-59 
Volume (vol) IEICE-112 
Number (no) no.89 
Page pp.93-98 
#Pages IEICE-6 
Date of Issue IEICE-RCS-2012-06-14 

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