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Paper Abstract and Keywords
Presentation 2008-04-17 16:10
UMTS TDD-CDMA Adjacent Channel Interference Cancellation Using Kalman Filter
Le Tien Anh, Masao Nakagawa (Keio Univ.) SIP2008-13 IE2008-13
Abstract (in Japanese) (See Japanese page) 
(in English) Inadequate filtering is the main cause of adjacent
channel interference (ACI) between adjacent frequency
bands. To avoid the lost of UMTS WCDMA systems窶 capacity,
guard-bands have to be used to separate those bands.
However, this solution is wasting a lot of frequency resources.
In UMTS, ACI occurs in TDD mode more seriously than in
FDD mode. The reason is because of the asynchronisation
among switching points between up-links and down-link
of different networks. In UMTS-TDD mode, ACI occurs
between Mobile Station - Mobile Station, Base Station - Base
Station, Mobile Station - Base Station, both in up-link and
down-link time-slots. Since UMTS-TDD mode uses only one
common frequency band for both up-link and down-link,
using guard-bands is really ineffective against ACI. In this
paper, firstly, ACI is carefully researched in both UMTSFDD
and UMTS-TDD modes to see the limitations of current
solutions. After that, an ACI cancellation algorithm applying
Kalman filter is proposed. Simulations are then performed
to show the advantages of this proposal over the current
solutions.
Keyword (in Japanese) (See Japanese page) 
(in English) Adjacent channel interference / adaptive interference cancellation / TDD-CDMA / UMTS-TDD / Kalman Filter / / /  
Reference Info. IEICE Tech. Rep., vol. 108, no. 3, SIP2008-13, pp. 73-78, April 2008.
Paper # SIP2008-13 
Date of Issue 2008-04-10 (SIP, IE) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
and
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)
Download PDF SIP2008-13 IE2008-13

Conference Information
Committee SIP IE  
Conference Date 2008-04-17 - 2008-04-17 
Place (in Japanese) (See Japanese page) 
Place (in English) Kikai-Shinko-Kaikan Bldg. 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To SIP 
Conference Code 2008-04-SIP-IE 
Language English 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) UMTS TDD-CDMA Adjacent Channel Interference Cancellation Using Kalman Filter 
Sub Title (in English)  
Keyword(1) Adjacent channel interference  
Keyword(2) adaptive interference cancellation  
Keyword(3) TDD-CDMA  
Keyword(4) UMTS-TDD  
Keyword(5) Kalman Filter  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Le Tien Anh  
1st Author's Affiliation Keio University (Keio Univ.)
2nd Author's Name Masao Nakagawa  
2nd Author's Affiliation Keio University (Keio Univ.)
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Speaker Author-1 
Date Time 2008-04-17 16:10:00 
Presentation Time 25 minutes 
Registration for SIP 
Paper # SIP2008-13, IE2008-13 
Volume (vol) vol.108 
Number (no) no.3(SIP), no.4(IE) 
Page pp.73-78 
#Pages 6 
Date of Issue 2008-04-10 (SIP, IE) 

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