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Paper Abstract and Keywords
Presentation 2015-06-26 11:01
A Study on Approximated LLR Computation for Space Time Block Code and Forward Error Correction Code in Presence of Phase Noise
Makoto Nishikori, Shinsuke Ibi, Seiichi Sampei (Osaka Univ.) RCS2015-94
Abstract (in Japanese) (See Japanese page) 
(in English) This paper proposes a computation method of log likelihood ratio (LLR) of frequency domain equalizer (FDE) output in presence of phase noise for single carrier millimeter-wave (mmW) transmissions with low density parity check (LDPC) coded space-time block code (STBC). In mmW systems, local oscillators at both transmitter and receiver are suffering from severe phase noise while operating much higher frequency bands. In order to mitigate the impairment of phase noise, STBC and forward error correction (FEC), such as LDPC, techniques are effective tools. However, if the probabilistic model does not capture exact behavior of a random process on received signal, the capability of FEC is severely deteriorated. To address this issue, we appropriately define approximated LLR of FDE output for LDPC coded STBC. We have demonstrated that the derived LLR is capable of improving bit error rate (BER) performances in the presence of phase noise.
Keyword (in Japanese) (See Japanese page) 
(in English) log likelihood ratio / phase noise / millimeter wave / space-time block code / frequency domain equalizer / / /  
Reference Info. IEICE Tech. Rep., vol. 115, no. 113, RCS2015-94, pp. 281-286, June 2015.
Paper # RCS2015-94 
Date of Issue 2015-06-17 (RCS) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
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reproduction		 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 2015-06-24 - 2015-06-26 
Place (in Japanese) (See Japanese page) 
Place (in English) Hokkaido Univ. 
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 2015-06-RCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Study on Approximated LLR Computation for Space Time Block Code and Forward Error Correction Code in Presence of Phase Noise 
Sub Title (in English)  
Keyword(1) log likelihood ratio  
Keyword(2) phase noise  
Keyword(3) millimeter wave  
Keyword(4) space-time block code  
Keyword(5) frequency domain equalizer  
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1st Author's Name Makoto Nishikori  
1st Author's Affiliation Osaka University (Osaka Univ.)
2nd Author's Name Shinsuke Ibi  
2nd Author's Affiliation Osaka University (Osaka Univ.)
3rd Author's Name Seiichi Sampei  
3rd Author's Affiliation Osaka University (Osaka Univ.)
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Speaker Author-1 
Date Time 2015-06-26 11:01:00 
Presentation Time 8 minutes 
Registration for RCS 
Paper # RCS2015-94 
Volume (vol) vol.115 
Number (no) no.113 
Page pp.281-286 
#Pages 6 
Date of Issue 2015-06-17 (RCS) 

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