Paper Abstract and Keywords |
Presentation |
2007-01-26 09:45
Impact of Timing Error on DS-CDMA with Frequency-domain Equalization Le Liu, Chiao-yi Chen, Fumiyuki Adachi (Tohoku Univ.) SIP2006-161 RCS2006-219 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
Recently, the frequency-domain equalization (FDE) has been attracting much attention since it is an effective equalization technique for direct-sequence code division multiple access (DS-CDMA) signal transmission in a frequency-selective fading channel. In practical systems, the square-root Nyquist transmit and receive filters are used for the bandwidth limitation of the transmitted signals. The presence of timing error produces the inter-symbol interference (ISI) and thus degrades the transmission performance. In this paper, we present a theoretical analysis on the bit error rate (BER) performance of DS-CDMA using FDE in the presence of timing error and the analysis is confirmed by computer simulation. In the presence of timing error, the received signal spreads in the time domain and the FFT window should be shifted to contain most of desired signal components. The optimum rolloff factor that minimizes the average BER is around 0.2. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
DS-CDMA / frequency-domain equalization / timing error / Nyquist filter / / / / |
Reference Info. |
IEICE Tech. Rep., vol. 106, no. 480, RCS2006-219, pp. 19-24, Jan. 2007. |
Paper # |
RCS2006-219 |
Date of Issue |
2007-01-19 (SIP, RCS) |
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) |
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SIP2006-161 RCS2006-219 |
Conference Information |
Committee |
RCS SIP |
Conference Date |
2007-01-24 - 2007-01-26 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
NICT Okinawa |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
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Paper Information |
Registration To |
RCS |
Conference Code |
2007-01-RCS-SIP |
Language |
English |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Impact of Timing Error on DS-CDMA with Frequency-domain Equalization |
Sub Title (in English) |
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Keyword(1) |
DS-CDMA |
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frequency-domain equalization |
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timing error |
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Nyquist filter |
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1st Author's Name |
Le Liu |
1st Author's Affiliation |
Tohoku University (Tohoku Univ.) |
2nd Author's Name |
Chiao-yi Chen |
2nd Author's Affiliation |
Tohoku University (Tohoku Univ.) |
3rd Author's Name |
Fumiyuki Adachi |
3rd Author's Affiliation |
Tohoku University (Tohoku Univ.) |
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Speaker |
Author-1 |
Date Time |
2007-01-26 09:45:00 |
Presentation Time |
20 minutes |
Registration for |
RCS |
Paper # |
SIP2006-161, RCS2006-219 |
Volume (vol) |
vol.106 |
Number (no) |
no.477(SIP), no.480(RCS) |
Page |
pp.19-24 |
#Pages |
6 |
Date of Issue |
2007-01-19 (SIP, RCS) |
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