The Pathwise Semi-Blind Algorithm for Downlink DS-CDMA Systems Using Antenna Arrays

Yung-Yi WANG; Kuo-Hsiung WU; Jiunn-Tsair CHEN

doi:10.1093/ietfec/e89-a.11.3157

The Pathwise Semi-Blind Algorithm for Downlink DS-CDMA Systems Using Antenna Arrays

Yung-Yi WANG, Kuo-Hsiung WU, Jiunn-Tsair CHEN

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This paper presents a semi-blind algorithm for multiuser interference cancellation and fading amplitude estimation for downlink MIMO DS-CDMA systems with multipath fading channels. Taking advantage of the space-time information of the parametric multipath channel, the proposed algorithm first uses a space-time channel decoupler to suppress multiuser interference and then decomposes the channel into a set of parallel subchannels each containing the signal of the desired user on an individual multipath. Two criteria, the complementary orthogonal projection (COP) and the minimum variance distortionless response (MVDR), are employed by the space-time decoupler to achieve interference suppression and signal separation. The fading amplitudes can then be estimated from the eigen space of the output of the space-time channel decoupler. It follows that the signal of interest can be maximally combined in a pathwise manner and then differentially decoded.

Publication: IEICE TRANSACTIONS on Fundamentals Vol.E89-A No.11 pp.3157-3160

Publication Date: 2006/11/01

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Online ISSN: 1745-1337

DOI: 10.1093/ietfec/e89-a.11.3157

Type of Manuscript: Special Section LETTER (Special Section on Wide Band Systems)

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Yung-Yi WANG, Kuo-Hsiung WU, Jiunn-Tsair CHEN, "The Pathwise Semi-Blind Algorithm for Downlink DS-CDMA Systems Using Antenna Arrays" in IEICE TRANSACTIONS on Fundamentals, vol. E89-A, no. 11, pp. 3157-3160, November 2006, doi: 10.1093/ietfec/e89-a.11.3157.
Abstract: This paper presents a semi-blind algorithm for multiuser interference cancellation and fading amplitude estimation for downlink MIMO DS-CDMA systems with multipath fading channels. Taking advantage of the space-time information of the parametric multipath channel, the proposed algorithm first uses a space-time channel decoupler to suppress multiuser interference and then decomposes the channel into a set of parallel subchannels each containing the signal of the desired user on an individual multipath. Two criteria, the complementary orthogonal projection (COP) and the minimum variance distortionless response (MVDR), are employed by the space-time decoupler to achieve interference suppression and signal separation. The fading amplitudes can then be estimated from the eigen space of the output of the space-time channel decoupler. It follows that the signal of interest can be maximally combined in a pathwise manner and then differentially decoded.
URL: https://globals.ieice.org/en_transactions/fundamentals/10.1093/ietfec/e89-a.11.3157/_p

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@ARTICLE{e89-a_11_3157,
author={Yung-Yi WANG, Kuo-Hsiung WU, Jiunn-Tsair CHEN, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={The Pathwise Semi-Blind Algorithm for Downlink DS-CDMA Systems Using Antenna Arrays},
year={2006},
volume={E89-A},
number={11},
pages={3157-3160},
abstract={This paper presents a semi-blind algorithm for multiuser interference cancellation and fading amplitude estimation for downlink MIMO DS-CDMA systems with multipath fading channels. Taking advantage of the space-time information of the parametric multipath channel, the proposed algorithm first uses a space-time channel decoupler to suppress multiuser interference and then decomposes the channel into a set of parallel subchannels each containing the signal of the desired user on an individual multipath. Two criteria, the complementary orthogonal projection (COP) and the minimum variance distortionless response (MVDR), are employed by the space-time decoupler to achieve interference suppression and signal separation. The fading amplitudes can then be estimated from the eigen space of the output of the space-time channel decoupler. It follows that the signal of interest can be maximally combined in a pathwise manner and then differentially decoded.},
keywords={},
doi={10.1093/ietfec/e89-a.11.3157},
ISSN={1745-1337},
month={November},}

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TY - JOUR
TI - The Pathwise Semi-Blind Algorithm for Downlink DS-CDMA Systems Using Antenna Arrays
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 3157
EP - 3160
AU - Yung-Yi WANG
AU - Kuo-Hsiung WU
AU - Jiunn-Tsair CHEN
PY - 2006
DO - 10.1093/ietfec/e89-a.11.3157
JO - IEICE TRANSACTIONS on Fundamentals
SN - 1745-1337
VL - E89-A
IS - 11
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - November 2006
AB - This paper presents a semi-blind algorithm for multiuser interference cancellation and fading amplitude estimation for downlink MIMO DS-CDMA systems with multipath fading channels. Taking advantage of the space-time information of the parametric multipath channel, the proposed algorithm first uses a space-time channel decoupler to suppress multiuser interference and then decomposes the channel into a set of parallel subchannels each containing the signal of the desired user on an individual multipath. Two criteria, the complementary orthogonal projection (COP) and the minimum variance distortionless response (MVDR), are employed by the space-time decoupler to achieve interference suppression and signal separation. The fading amplitudes can then be estimated from the eigen space of the output of the space-time channel decoupler. It follows that the signal of interest can be maximally combined in a pathwise manner and then differentially decoded.
ER -