Long-term krylov-prefilter for reduced-dimension receive processing in DS-CDMA systems

Guido Dietl; Michael Joham; Wolfgang Utschik; Josef A. Nossek

Long-term krylov-prefilter for reduced-dimension receive processing in DS-CDMA systems

Guido Dietl, Michael Joham, Wolfgang Utschik, Josef A. Nossek

Technical University of Munich

Research output: Contribution to journal › Conference article › peer-review

1 Scopus citations

Abstract

Currently, long-term channel properties are only used for reduced-dimension processing in eigen sub-spaces. In this paper, we introduce a prerake at the transmitter in the uplink of a Direct Sequence (DS) CDMA system with non-orthogonal codes in order to exploit long-term channel properties for reduced-dimension Wiener filtering in Krylov subspaces at the receiver. Simulation results show that Krylov outperforms eigen prefiltering with and without previous correlation. Moreover, long-term is better than or equal to short-term processing except for optimal filtering in Krylov subspaces assuming multipath environments.

Original language	English
Pages (from-to)	492-495
Number of pages	4
Journal	IEEE Vehicular Technology Conference
Volume	56
Issue number	1
State	Published - 2002
Event	56th Vehicular Technology Conference - Vancouver, BC, Canada Duration: 24 Sep 2002 → 28 Sep 2002

Keywords

Adaptive filtering
DS-CDMA
Long-term channel properties
Multi-stage nested wiener filter
Non-orthogonal codes
Reduced-rank equalization
Space-time processing
Wireless communications

Cite this

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title = "Long-term krylov-prefilter for reduced-dimension receive processing in DS-CDMA systems",

abstract = "Currently, long-term channel properties are only used for reduced-dimension processing in eigen sub-spaces. In this paper, we introduce a prerake at the transmitter in the uplink of a Direct Sequence (DS) CDMA system with non-orthogonal codes in order to exploit long-term channel properties for reduced-dimension Wiener filtering in Krylov subspaces at the receiver. Simulation results show that Krylov outperforms eigen prefiltering with and without previous correlation. Moreover, long-term is better than or equal to short-term processing except for optimal filtering in Krylov subspaces assuming multipath environments.",

keywords = "Adaptive filtering, DS-CDMA, Long-term channel properties, Multi-stage nested wiener filter, Non-orthogonal codes, Reduced-rank equalization, Space-time processing, Wireless communications",

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year = "2002",

language = "English",

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journal = "IEEE Vehicular Technology Conference",

issn = "0740-0551",

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number = "1",

note = "56th Vehicular Technology Conference ; Conference date: 24-09-2002 Through 28-09-2002",

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TY - JOUR

T1 - Long-term krylov-prefilter for reduced-dimension receive processing in DS-CDMA systems

AU - Dietl, Guido

AU - Joham, Michael

AU - Utschik, Wolfgang

AU - Nossek, Josef A.

PY - 2002

Y1 - 2002

N2 - Currently, long-term channel properties are only used for reduced-dimension processing in eigen sub-spaces. In this paper, we introduce a prerake at the transmitter in the uplink of a Direct Sequence (DS) CDMA system with non-orthogonal codes in order to exploit long-term channel properties for reduced-dimension Wiener filtering in Krylov subspaces at the receiver. Simulation results show that Krylov outperforms eigen prefiltering with and without previous correlation. Moreover, long-term is better than or equal to short-term processing except for optimal filtering in Krylov subspaces assuming multipath environments.

AB - Currently, long-term channel properties are only used for reduced-dimension processing in eigen sub-spaces. In this paper, we introduce a prerake at the transmitter in the uplink of a Direct Sequence (DS) CDMA system with non-orthogonal codes in order to exploit long-term channel properties for reduced-dimension Wiener filtering in Krylov subspaces at the receiver. Simulation results show that Krylov outperforms eigen prefiltering with and without previous correlation. Moreover, long-term is better than or equal to short-term processing except for optimal filtering in Krylov subspaces assuming multipath environments.

KW - Adaptive filtering

KW - DS-CDMA

KW - Long-term channel properties

KW - Multi-stage nested wiener filter

KW - Non-orthogonal codes

KW - Reduced-rank equalization

KW - Space-time processing

KW - Wireless communications

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M3 - Conference article

AN - SCOPUS:0036445572

SN - 0740-0551

VL - 56

SP - 492

EP - 495

JO - IEEE Vehicular Technology Conference

JF - IEEE Vehicular Technology Conference

IS - 1

T2 - 56th Vehicular Technology Conference

Y2 - 24 September 2002 through 28 September 2002

ER -

Long-term krylov-prefilter for reduced-dimension receive processing in DS-CDMA systems

Abstract

Keywords

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