IEICE TRANSACTIONS on Communications
Beamspace-Time Transmit Diversity for Time-Domain Spreading OFDM-CDM Systems
Summary :
This paper presents a beamspace-time transmit diversity scheme that uses a space-time block code (STBC) and a fixed multi-beam transmit array with low sidelobes for time-domain spreading orthogonal frequency-division multiplexing code-division multiplexing (OFDM-CDM) downlink transmission. The scheme assigns space-time-coded signals to a pair of neighboring beams via closed-loop beam selection. Time-domain spreading provides non-frequency selectivity in each spreading region, which makes it possible for multiple STBCs to share any beam and to be decoded after despreading. Simulation results demonstrated that multiple transmit beams and multiple receive antennas provide large beam gains and/or a high order of diversity gains. In addition, the proposed scheme spatially separates users by beam and thus alleviates multi-user interference.
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- IEICE TRANSACTIONS on Communications Vol.E86-B No.1 pp.344-351
- Publication Date
- 2003/01/01
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- Special Section PAPER (Special Issue on Multiple Access and Signal Transmission Techniques for Future Mobile Communications)
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Masaaki FUJII, "Beamspace-Time Transmit Diversity for Time-Domain Spreading OFDM-CDM Systems" in IEICE TRANSACTIONS on Communications,
vol. E86-B, no. 1, pp. 344-351, January 2003, doi: .
Abstract: This paper presents a beamspace-time transmit diversity scheme that uses a space-time block code (STBC) and a fixed multi-beam transmit array with low sidelobes for time-domain spreading orthogonal frequency-division multiplexing code-division multiplexing (OFDM-CDM) downlink transmission. The scheme assigns space-time-coded signals to a pair of neighboring beams via closed-loop beam selection. Time-domain spreading provides non-frequency selectivity in each spreading region, which makes it possible for multiple STBCs to share any beam and to be decoded after despreading. Simulation results demonstrated that multiple transmit beams and multiple receive antennas provide large beam gains and/or a high order of diversity gains. In addition, the proposed scheme spatially separates users by beam and thus alleviates multi-user interference.
URL: https://global.ieice.org/en_transactions/communications/10.1587/e86-b_1_344/_p
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@ARTICLE{e86-b_1_344,
author={Masaaki FUJII, },
journal={IEICE TRANSACTIONS on Communications},
title={Beamspace-Time Transmit Diversity for Time-Domain Spreading OFDM-CDM Systems},
year={2003},
volume={E86-B},
number={1},
pages={344-351},
abstract={This paper presents a beamspace-time transmit diversity scheme that uses a space-time block code (STBC) and a fixed multi-beam transmit array with low sidelobes for time-domain spreading orthogonal frequency-division multiplexing code-division multiplexing (OFDM-CDM) downlink transmission. The scheme assigns space-time-coded signals to a pair of neighboring beams via closed-loop beam selection. Time-domain spreading provides non-frequency selectivity in each spreading region, which makes it possible for multiple STBCs to share any beam and to be decoded after despreading. Simulation results demonstrated that multiple transmit beams and multiple receive antennas provide large beam gains and/or a high order of diversity gains. In addition, the proposed scheme spatially separates users by beam and thus alleviates multi-user interference.},
keywords={},
doi={},
ISSN={},
month={January},}
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TY - JOUR
TI - Beamspace-Time Transmit Diversity for Time-Domain Spreading OFDM-CDM Systems
T2 - IEICE TRANSACTIONS on Communications
SP - 344
EP - 351
AU - Masaaki FUJII
PY - 2003
DO -
JO - IEICE TRANSACTIONS on Communications
SN -
VL - E86-B
IS - 1
JA - IEICE TRANSACTIONS on Communications
Y1 - January 2003
AB - This paper presents a beamspace-time transmit diversity scheme that uses a space-time block code (STBC) and a fixed multi-beam transmit array with low sidelobes for time-domain spreading orthogonal frequency-division multiplexing code-division multiplexing (OFDM-CDM) downlink transmission. The scheme assigns space-time-coded signals to a pair of neighboring beams via closed-loop beam selection. Time-domain spreading provides non-frequency selectivity in each spreading region, which makes it possible for multiple STBCs to share any beam and to be decoded after despreading. Simulation results demonstrated that multiple transmit beams and multiple receive antennas provide large beam gains and/or a high order of diversity gains. In addition, the proposed scheme spatially separates users by beam and thus alleviates multi-user interference.
ER -
English
