Blind Channel Shortening for Block Transmission of Correlated Signals
Summary :
In block transmission systems, blind channel shortening methods are known to be effective to reduce the influence of interblock interference which degrades the performance when the length of a channel impulse response is extremely long. Conventional methods assume that the transmitted signal is uncorrelated; however, this assumption is invalid in practical systems such as OFDM with null carriers and MC-CDMA. In this paper, we consider blind channel shortening methods for block transmissions when the transmitted samples within a block are correlated. First, the channel shortening ability of a conventional method is clarified. Next, a new method which exploits the fact that the transmitted samples in different blocks are uncorrelated is introduced. It is shown that the proposed method can shorten the channel properly under certain conditions. Finally, simulation results of OFDM and MC-CDMA systems are shown to verify the effectiveness of the proposed method compared with a conventional one.
- Publication
- IEICE TRANSACTIONS on Fundamentals Vol.E91-A No.11 pp.3095-3103
- Publication Date
- 2008/11/01
- Publicized
- Online ISSN
- 1745-1337
- DOI
- 10.1093/ietfec/e91-a.11.3095
- Type of Manuscript
- Special Section PAPER (Special Section on Wideband Systems)
- Category
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Teruyuki MIYAJIMA, Yoshihisa WATANABE, "Blind Channel Shortening for Block Transmission of Correlated Signals" in IEICE TRANSACTIONS on Fundamentals,
vol. E91-A, no. 11, pp. 3095-3103, November 2008, doi: 10.1093/ietfec/e91-a.11.3095.
Abstract: In block transmission systems, blind channel shortening methods are known to be effective to reduce the influence of interblock interference which degrades the performance when the length of a channel impulse response is extremely long. Conventional methods assume that the transmitted signal is uncorrelated; however, this assumption is invalid in practical systems such as OFDM with null carriers and MC-CDMA. In this paper, we consider blind channel shortening methods for block transmissions when the transmitted samples within a block are correlated. First, the channel shortening ability of a conventional method is clarified. Next, a new method which exploits the fact that the transmitted samples in different blocks are uncorrelated is introduced. It is shown that the proposed method can shorten the channel properly under certain conditions. Finally, simulation results of OFDM and MC-CDMA systems are shown to verify the effectiveness of the proposed method compared with a conventional one.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1093/ietfec/e91-a.11.3095/_p
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@ARTICLE{e91-a_11_3095,
author={Teruyuki MIYAJIMA, Yoshihisa WATANABE, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Blind Channel Shortening for Block Transmission of Correlated Signals},
year={2008},
volume={E91-A},
number={11},
pages={3095-3103},
abstract={In block transmission systems, blind channel shortening methods are known to be effective to reduce the influence of interblock interference which degrades the performance when the length of a channel impulse response is extremely long. Conventional methods assume that the transmitted signal is uncorrelated; however, this assumption is invalid in practical systems such as OFDM with null carriers and MC-CDMA. In this paper, we consider blind channel shortening methods for block transmissions when the transmitted samples within a block are correlated. First, the channel shortening ability of a conventional method is clarified. Next, a new method which exploits the fact that the transmitted samples in different blocks are uncorrelated is introduced. It is shown that the proposed method can shorten the channel properly under certain conditions. Finally, simulation results of OFDM and MC-CDMA systems are shown to verify the effectiveness of the proposed method compared with a conventional one.},
keywords={},
doi={10.1093/ietfec/e91-a.11.3095},
ISSN={1745-1337},
month={November},}
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TY - JOUR
TI - Blind Channel Shortening for Block Transmission of Correlated Signals
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 3095
EP - 3103
AU - Teruyuki MIYAJIMA
AU - Yoshihisa WATANABE
PY - 2008
DO - 10.1093/ietfec/e91-a.11.3095
JO - IEICE TRANSACTIONS on Fundamentals
SN - 1745-1337
VL - E91-A
IS - 11
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - November 2008
AB - In block transmission systems, blind channel shortening methods are known to be effective to reduce the influence of interblock interference which degrades the performance when the length of a channel impulse response is extremely long. Conventional methods assume that the transmitted signal is uncorrelated; however, this assumption is invalid in practical systems such as OFDM with null carriers and MC-CDMA. In this paper, we consider blind channel shortening methods for block transmissions when the transmitted samples within a block are correlated. First, the channel shortening ability of a conventional method is clarified. Next, a new method which exploits the fact that the transmitted samples in different blocks are uncorrelated is introduced. It is shown that the proposed method can shorten the channel properly under certain conditions. Finally, simulation results of OFDM and MC-CDMA systems are shown to verify the effectiveness of the proposed method compared with a conventional one.
ER -
English
