A Proposed DS/CDMA System Using Analog PN Sequences Produced by Adaptive Filters
Summary :
This paper proposes a novel asynchronous direct sequence/code division multiple access (DS/CDMA) communication system using analog pseudo noise (PN) sequences that have an orthogonal relation for all active users. Analog PN sequences are produced by an adaptive filter called a "code-orthogonalizing filter" (COF). In a base station receiver, the tap coefficients of the COF can be adaptively controlled "to orthogonalize" or "to approach to orthogonalize" various received PN sequences. The elements of the analog PN sequences consist of the tap coefficients of the COF. The analog PN sequence produced is assigned to the transmitter of each user in order. As a result, multiple access interference (MAI) caused by other users can be reduced considerably, and multiple access capacity increased by the proposed system compared with matched filter (MF) reception and COF reception.
- Publication
- IEICE TRANSACTIONS on Fundamentals Vol.E81-A No.11 pp.2261-2268
- Publication Date
- 1998/11/25
- Publicized
- Online ISSN
- DOI
- Type of Manuscript
- Special Section PAPER (Special Section on Spread Spectrum Techniques and Applications)
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Seiji HAMADA, Masanori HAMAMURA, Hitoshi SUZUKI, Shin'ichi TACHIKAWA, "A Proposed DS/CDMA System Using Analog PN Sequences Produced by Adaptive Filters" in IEICE TRANSACTIONS on Fundamentals,
vol. E81-A, no. 11, pp. 2261-2268, November 1998, doi: .
Abstract: This paper proposes a novel asynchronous direct sequence/code division multiple access (DS/CDMA) communication system using analog pseudo noise (PN) sequences that have an orthogonal relation for all active users. Analog PN sequences are produced by an adaptive filter called a "code-orthogonalizing filter" (COF). In a base station receiver, the tap coefficients of the COF can be adaptively controlled "to orthogonalize" or "to approach to orthogonalize" various received PN sequences. The elements of the analog PN sequences consist of the tap coefficients of the COF. The analog PN sequence produced is assigned to the transmitter of each user in order. As a result, multiple access interference (MAI) caused by other users can be reduced considerably, and multiple access capacity increased by the proposed system compared with matched filter (MF) reception and COF reception.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1587/e81-a_11_2261/_p
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@ARTICLE{e81-a_11_2261,
author={Seiji HAMADA, Masanori HAMAMURA, Hitoshi SUZUKI, Shin'ichi TACHIKAWA, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={A Proposed DS/CDMA System Using Analog PN Sequences Produced by Adaptive Filters},
year={1998},
volume={E81-A},
number={11},
pages={2261-2268},
abstract={This paper proposes a novel asynchronous direct sequence/code division multiple access (DS/CDMA) communication system using analog pseudo noise (PN) sequences that have an orthogonal relation for all active users. Analog PN sequences are produced by an adaptive filter called a "code-orthogonalizing filter" (COF). In a base station receiver, the tap coefficients of the COF can be adaptively controlled "to orthogonalize" or "to approach to orthogonalize" various received PN sequences. The elements of the analog PN sequences consist of the tap coefficients of the COF. The analog PN sequence produced is assigned to the transmitter of each user in order. As a result, multiple access interference (MAI) caused by other users can be reduced considerably, and multiple access capacity increased by the proposed system compared with matched filter (MF) reception and COF reception.},
keywords={},
doi={},
ISSN={},
month={November},}
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TY - JOUR
TI - A Proposed DS/CDMA System Using Analog PN Sequences Produced by Adaptive Filters
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 2261
EP - 2268
AU - Seiji HAMADA
AU - Masanori HAMAMURA
AU - Hitoshi SUZUKI
AU - Shin'ichi TACHIKAWA
PY - 1998
DO -
JO - IEICE TRANSACTIONS on Fundamentals
SN -
VL - E81-A
IS - 11
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - November 1998
AB - This paper proposes a novel asynchronous direct sequence/code division multiple access (DS/CDMA) communication system using analog pseudo noise (PN) sequences that have an orthogonal relation for all active users. Analog PN sequences are produced by an adaptive filter called a "code-orthogonalizing filter" (COF). In a base station receiver, the tap coefficients of the COF can be adaptively controlled "to orthogonalize" or "to approach to orthogonalize" various received PN sequences. The elements of the analog PN sequences consist of the tap coefficients of the COF. The analog PN sequence produced is assigned to the transmitter of each user in order. As a result, multiple access interference (MAI) caused by other users can be reduced considerably, and multiple access capacity increased by the proposed system compared with matched filter (MF) reception and COF reception.
ER -
English
