IEICE TRANSACTIONS on Communications
A Blind Adaptive Receiver with Decision-Directed Steering Vector for DS-CDMA Downlink
Summary :
A blind technique for adaptive signal suppression in multipath DS-CDMA communication channels for the downlink is considered. Its performance is degraded when mismatch problem occurs when multipath components arrive with fractional-chip delays. In order to surmount this problem, Multiple Finger Expansion Optimal Filter (MFE-OF) was recently proposed to estimate the received desired signal subspace using fractionally delayed despreading fingers. However, MFE-OF requires much computational complexity for good performance. In this paper, a modification to the MFE-OF is introduced by utilizing decision-directed steering vector to reduce the number of fingers required by MFE-OF down to that of the conventional OMF-RAKE without much performance degradation. This modified receiver is called Decision-Directed Optimal Filter (DDOF). Computer simulation validates the effectiveness of the new receiver to increase the downlink capacity of DS-CDMA systems.
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- IEICE TRANSACTIONS on Communications Vol.E83-B No.8 pp.1656-1663
- Publication Date
- 2000/08/25
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- Special Section PAPER (Special Issue on Personal, Indoor and Mobile Radio Communications)
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Quee-Seng QUEK, Hiroshi SUZUKI, "A Blind Adaptive Receiver with Decision-Directed Steering Vector for DS-CDMA Downlink" in IEICE TRANSACTIONS on Communications,
vol. E83-B, no. 8, pp. 1656-1663, August 2000, doi: .
Abstract: A blind technique for adaptive signal suppression in multipath DS-CDMA communication channels for the downlink is considered. Its performance is degraded when mismatch problem occurs when multipath components arrive with fractional-chip delays. In order to surmount this problem, Multiple Finger Expansion Optimal Filter (MFE-OF) was recently proposed to estimate the received desired signal subspace using fractionally delayed despreading fingers. However, MFE-OF requires much computational complexity for good performance. In this paper, a modification to the MFE-OF is introduced by utilizing decision-directed steering vector to reduce the number of fingers required by MFE-OF down to that of the conventional OMF-RAKE without much performance degradation. This modified receiver is called Decision-Directed Optimal Filter (DDOF). Computer simulation validates the effectiveness of the new receiver to increase the downlink capacity of DS-CDMA systems.
URL: https://global.ieice.org/en_transactions/communications/10.1587/e83-b_8_1656/_p
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@ARTICLE{e83-b_8_1656,
author={Quee-Seng QUEK, Hiroshi SUZUKI, },
journal={IEICE TRANSACTIONS on Communications},
title={A Blind Adaptive Receiver with Decision-Directed Steering Vector for DS-CDMA Downlink},
year={2000},
volume={E83-B},
number={8},
pages={1656-1663},
abstract={A blind technique for adaptive signal suppression in multipath DS-CDMA communication channels for the downlink is considered. Its performance is degraded when mismatch problem occurs when multipath components arrive with fractional-chip delays. In order to surmount this problem, Multiple Finger Expansion Optimal Filter (MFE-OF) was recently proposed to estimate the received desired signal subspace using fractionally delayed despreading fingers. However, MFE-OF requires much computational complexity for good performance. In this paper, a modification to the MFE-OF is introduced by utilizing decision-directed steering vector to reduce the number of fingers required by MFE-OF down to that of the conventional OMF-RAKE without much performance degradation. This modified receiver is called Decision-Directed Optimal Filter (DDOF). Computer simulation validates the effectiveness of the new receiver to increase the downlink capacity of DS-CDMA systems.},
keywords={},
doi={},
ISSN={},
month={August},}
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TY - JOUR
TI - A Blind Adaptive Receiver with Decision-Directed Steering Vector for DS-CDMA Downlink
T2 - IEICE TRANSACTIONS on Communications
SP - 1656
EP - 1663
AU - Quee-Seng QUEK
AU - Hiroshi SUZUKI
PY - 2000
DO -
JO - IEICE TRANSACTIONS on Communications
SN -
VL - E83-B
IS - 8
JA - IEICE TRANSACTIONS on Communications
Y1 - August 2000
AB - A blind technique for adaptive signal suppression in multipath DS-CDMA communication channels for the downlink is considered. Its performance is degraded when mismatch problem occurs when multipath components arrive with fractional-chip delays. In order to surmount this problem, Multiple Finger Expansion Optimal Filter (MFE-OF) was recently proposed to estimate the received desired signal subspace using fractionally delayed despreading fingers. However, MFE-OF requires much computational complexity for good performance. In this paper, a modification to the MFE-OF is introduced by utilizing decision-directed steering vector to reduce the number of fingers required by MFE-OF down to that of the conventional OMF-RAKE without much performance degradation. This modified receiver is called Decision-Directed Optimal Filter (DDOF). Computer simulation validates the effectiveness of the new receiver to increase the downlink capacity of DS-CDMA systems.
ER -
English
