Paper Abstract and Keywords |
Presentation |
2013-11-22 11:35
Differential Space Time Block Coding using QAM Signals in First Modulation Shusaku Umeda, Yasunori Kato, Kaoru Tsukamoto, Akihiro Okazaki, Fumio Ishizu (Mitsubishi Electric) RCS2013-199 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
This paper proposes a new Differential Space-Time Block Coding (DSTBC) method that can apply non-constant envelope modulation, by suppressing increase of the amplitude variation. DSTBC is the method that is a combination of differential coding and space-time block coding. It can achieve transmit diversity without channel information, and it is tolerant of fading. However, as a first-modulation signals, DSTBC cannot apply non-constant envelope modulation, such as QAM (Quadrature Amplitude Modulation) and APSK (Amplitude Phase Shift Keying). Differential coding with non-constant envelope modulation get higher variance of signal amplitudes as the size of frame is larger. High amplitude variation causes the high PAPR, then DSTBC suffers from waveform distortion caused by a nonlinear transmit power amplifier. Furthermore, DSTBC-OFDM, the combination of DSTBC and OFDM (Orthogonal Frequency Division Multiplexing), with non-constant envelope modulation, degrades the performance because of the increase of probability of the signals with the remarkably small power. The proposed method, power normalized DSTBC can reduce the expansion of amplitude variation and realize the transmit diversity, by normalizing the differential signals by previous signal amplitude. Computer simulations demonstrate that power normalized DSTBC can alleviate the amplitude variation of differential signals, and improve the FER performance in AWGN channels. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
DSTBC / Transmit Diversity / QAM / Non-Constant Envelope Modulation / / / / |
Reference Info. |
IEICE Tech. Rep., vol. 113, no. 301, RCS2013-199, pp. 147-152, Nov. 2013. |
Paper # |
RCS2013-199 |
Date of Issue |
2013-11-13 (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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RCS2013-199 |
Conference Information |
Committee |
RCS AP |
Conference Date |
2013-11-20 - 2013-11-22 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Matsue Terrsa |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
Adaptive Antenna, Equalization, Interference Canceller, MIMO, Wireless Communication Systems, etc. |
Paper Information |
Registration To |
RCS |
Conference Code |
2013-11-RCS-AP |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Differential Space Time Block Coding using QAM Signals in First Modulation |
Sub Title (in English) |
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Keyword(1) |
DSTBC |
Keyword(2) |
Transmit Diversity |
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QAM |
Keyword(4) |
Non-Constant Envelope Modulation |
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1st Author's Name |
Shusaku Umeda |
1st Author's Affiliation |
Mitsubishi Electric Corporation (Mitsubishi Electric) |
2nd Author's Name |
Yasunori Kato |
2nd Author's Affiliation |
Mitsubishi Electric Corporation (Mitsubishi Electric) |
3rd Author's Name |
Kaoru Tsukamoto |
3rd Author's Affiliation |
Mitsubishi Electric Corporation (Mitsubishi Electric) |
4th Author's Name |
Akihiro Okazaki |
4th Author's Affiliation |
Mitsubishi Electric Corporation (Mitsubishi Electric) |
5th Author's Name |
Fumio Ishizu |
5th Author's Affiliation |
Mitsubishi Electric Corporation (Mitsubishi Electric) |
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Speaker |
Author-1 |
Date Time |
2013-11-22 11:35:00 |
Presentation Time |
25 minutes |
Registration for |
RCS |
Paper # |
RCS2013-199 |
Volume (vol) |
vol.113 |
Number (no) |
no.301 |
Page |
pp.147-152 |
#Pages |
6 |
Date of Issue |
2013-11-13 (RCS) |
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