CDMA-AIC: Highly Spectrum-Efficient CDMA Cellular System Based on Adaptive Interference Cancellation

Shousei YOSHIDA; Akihisa USHIROKAWA

CDMA-AIC: Highly Spectrum-Efficient CDMA Cellular System Based on Adaptive Interference Cancellation

Shousei YOSHIDA, Akihisa USHIROKAWA

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This paper describes a CDMA cellular system based on adaptive interference cancellation (CDMA-AIC) with a large capacity. In the CDMA-AIC, each base station employs a single-user type adaptive interference canceller (AIC), which consists of a fractionally chip-spaced code-orthogonalizing filter (COF) and a coherent detector. The AIC adaptively removes power-dominant multiple-access interferences (MAIs) in the cellular system, regardless of whether they are intra-cell interferences or inter-cell interferences, without any information about them, such as spreading codes, signal received timings and channel parameters. Evaluation under the multiple-cell environment demonstrates that the reverse link capacity of the CDMA-AIC with QPSK modulation is 3.6 times as large as the capacity of the CDMA without MAI cancellation. Further, the capacity is less sensitive to transmission power control errors than that of the conventional CDMA systems.

Publication: IEICE TRANSACTIONS on Communications Vol.E79-B No.3 pp.353-360

Publication Date: 1996/03/25

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Type of Manuscript: Special Section PAPER (Special Issue on Advanced Adaptive Radio Communication Technologies)

Category: Modulation, Demodulation

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Shousei YOSHIDA, Akihisa USHIROKAWA, "CDMA-AIC: Highly Spectrum-Efficient CDMA Cellular System Based on Adaptive Interference Cancellation" in IEICE TRANSACTIONS on Communications, vol. E79-B, no. 3, pp. 353-360, March 1996, doi: .
Abstract: This paper describes a CDMA cellular system based on adaptive interference cancellation (CDMA-AIC) with a large capacity. In the CDMA-AIC, each base station employs a single-user type adaptive interference canceller (AIC), which consists of a fractionally chip-spaced code-orthogonalizing filter (COF) and a coherent detector. The AIC adaptively removes power-dominant multiple-access interferences (MAIs) in the cellular system, regardless of whether they are intra-cell interferences or inter-cell interferences, without any information about them, such as spreading codes, signal received timings and channel parameters. Evaluation under the multiple-cell environment demonstrates that the reverse link capacity of the CDMA-AIC with QPSK modulation is 3.6 times as large as the capacity of the CDMA without MAI cancellation. Further, the capacity is less sensitive to transmission power control errors than that of the conventional CDMA systems.
URL: https://global.ieice.org/en_transactions/communications/10.1587/e79-b_3_353/_p

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@ARTICLE{e79-b_3_353,
author={Shousei YOSHIDA, Akihisa USHIROKAWA, },
journal={IEICE TRANSACTIONS on Communications},
title={CDMA-AIC: Highly Spectrum-Efficient CDMA Cellular System Based on Adaptive Interference Cancellation},
year={1996},
volume={E79-B},
number={3},
pages={353-360},
abstract={This paper describes a CDMA cellular system based on adaptive interference cancellation (CDMA-AIC) with a large capacity. In the CDMA-AIC, each base station employs a single-user type adaptive interference canceller (AIC), which consists of a fractionally chip-spaced code-orthogonalizing filter (COF) and a coherent detector. The AIC adaptively removes power-dominant multiple-access interferences (MAIs) in the cellular system, regardless of whether they are intra-cell interferences or inter-cell interferences, without any information about them, such as spreading codes, signal received timings and channel parameters. Evaluation under the multiple-cell environment demonstrates that the reverse link capacity of the CDMA-AIC with QPSK modulation is 3.6 times as large as the capacity of the CDMA without MAI cancellation. Further, the capacity is less sensitive to transmission power control errors than that of the conventional CDMA systems.},
keywords={},
doi={},
ISSN={},
month={March},}

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TY - JOUR
TI - CDMA-AIC: Highly Spectrum-Efficient CDMA Cellular System Based on Adaptive Interference Cancellation
T2 - IEICE TRANSACTIONS on Communications
SP - 353
EP - 360
AU - Shousei YOSHIDA
AU - Akihisa USHIROKAWA
PY - 1996
DO -
JO - IEICE TRANSACTIONS on Communications
SN -
VL - E79-B
IS - 3
JA - IEICE TRANSACTIONS on Communications
Y1 - March 1996
AB - This paper describes a CDMA cellular system based on adaptive interference cancellation (CDMA-AIC) with a large capacity. In the CDMA-AIC, each base station employs a single-user type adaptive interference canceller (AIC), which consists of a fractionally chip-spaced code-orthogonalizing filter (COF) and a coherent detector. The AIC adaptively removes power-dominant multiple-access interferences (MAIs) in the cellular system, regardless of whether they are intra-cell interferences or inter-cell interferences, without any information about them, such as spreading codes, signal received timings and channel parameters. Evaluation under the multiple-cell environment demonstrates that the reverse link capacity of the CDMA-AIC with QPSK modulation is 3.6 times as large as the capacity of the CDMA without MAI cancellation. Further, the capacity is less sensitive to transmission power control errors than that of the conventional CDMA systems.
ER -