IEICE TRANSACTIONS on Communications
Error Free Condition Attained by Down-Link Power Control for CDMA Fixed Wireless Access System: Measured ISI Level of Modem and Power Control Simulation
Summary :
This paper describes feasibility of a proposed fixed wireless access system with CDMA technology. The system adopts a primary modulation of 16 QAM and the same frequency allocation in all cells to improve spectral efficiency. The system capacity is 1 Gbps per cell within 120 MHz bandwidth. The number of available orthogonal codes corresponds to the orthogonal code length in the system. All subscribers can attain an error free condition with output power control in the presence of inter-cell interference. The following two items are considered to examine the proposed system feasibility. 1) A test modem is fabricated, and a back-to-back modem BER performance is measured. An inter-symbol interference (ISI) level of the modem is estimated with the measured performance. 2) A computer simulation of down-link power control is carried out considering inter-cell interference and impairment factors of the power control such as intra-sector interference caused by the ISI and limited ranges of total and relative output power controls. The simulation results show that the proposed system would be feasible because the obtained power penalties caused by the above impairment factors are negligible.
- Publication
- IEICE TRANSACTIONS on Communications Vol.E87-B No.1 pp.56-67
- Publication Date
- 2004/01/01
- Publicized
- Online ISSN
- DOI
- Type of Manuscript
- PAPER
- Category
- Wireless Communication Technology
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Noboru IZUKA, Yoshimasa DAIDO, "Error Free Condition Attained by Down-Link Power Control for CDMA Fixed Wireless Access System: Measured ISI Level of Modem and Power Control Simulation" in IEICE TRANSACTIONS on Communications,
vol. E87-B, no. 1, pp. 56-67, January 2004, doi: .
Abstract: This paper describes feasibility of a proposed fixed wireless access system with CDMA technology. The system adopts a primary modulation of 16 QAM and the same frequency allocation in all cells to improve spectral efficiency. The system capacity is 1 Gbps per cell within 120 MHz bandwidth. The number of available orthogonal codes corresponds to the orthogonal code length in the system. All subscribers can attain an error free condition with output power control in the presence of inter-cell interference. The following two items are considered to examine the proposed system feasibility. 1) A test modem is fabricated, and a back-to-back modem BER performance is measured. An inter-symbol interference (ISI) level of the modem is estimated with the measured performance. 2) A computer simulation of down-link power control is carried out considering inter-cell interference and impairment factors of the power control such as intra-sector interference caused by the ISI and limited ranges of total and relative output power controls. The simulation results show that the proposed system would be feasible because the obtained power penalties caused by the above impairment factors are negligible.
URL: https://global.ieice.org/en_transactions/communications/10.1587/e87-b_1_56/_p
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@ARTICLE{e87-b_1_56,
author={Noboru IZUKA, Yoshimasa DAIDO, },
journal={IEICE TRANSACTIONS on Communications},
title={Error Free Condition Attained by Down-Link Power Control for CDMA Fixed Wireless Access System: Measured ISI Level of Modem and Power Control Simulation},
year={2004},
volume={E87-B},
number={1},
pages={56-67},
abstract={This paper describes feasibility of a proposed fixed wireless access system with CDMA technology. The system adopts a primary modulation of 16 QAM and the same frequency allocation in all cells to improve spectral efficiency. The system capacity is 1 Gbps per cell within 120 MHz bandwidth. The number of available orthogonal codes corresponds to the orthogonal code length in the system. All subscribers can attain an error free condition with output power control in the presence of inter-cell interference. The following two items are considered to examine the proposed system feasibility. 1) A test modem is fabricated, and a back-to-back modem BER performance is measured. An inter-symbol interference (ISI) level of the modem is estimated with the measured performance. 2) A computer simulation of down-link power control is carried out considering inter-cell interference and impairment factors of the power control such as intra-sector interference caused by the ISI and limited ranges of total and relative output power controls. The simulation results show that the proposed system would be feasible because the obtained power penalties caused by the above impairment factors are negligible.},
keywords={},
doi={},
ISSN={},
month={January},}
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TY - JOUR
TI - Error Free Condition Attained by Down-Link Power Control for CDMA Fixed Wireless Access System: Measured ISI Level of Modem and Power Control Simulation
T2 - IEICE TRANSACTIONS on Communications
SP - 56
EP - 67
AU - Noboru IZUKA
AU - Yoshimasa DAIDO
PY - 2004
DO -
JO - IEICE TRANSACTIONS on Communications
SN -
VL - E87-B
IS - 1
JA - IEICE TRANSACTIONS on Communications
Y1 - January 2004
AB - This paper describes feasibility of a proposed fixed wireless access system with CDMA technology. The system adopts a primary modulation of 16 QAM and the same frequency allocation in all cells to improve spectral efficiency. The system capacity is 1 Gbps per cell within 120 MHz bandwidth. The number of available orthogonal codes corresponds to the orthogonal code length in the system. All subscribers can attain an error free condition with output power control in the presence of inter-cell interference. The following two items are considered to examine the proposed system feasibility. 1) A test modem is fabricated, and a back-to-back modem BER performance is measured. An inter-symbol interference (ISI) level of the modem is estimated with the measured performance. 2) A computer simulation of down-link power control is carried out considering inter-cell interference and impairment factors of the power control such as intra-sector interference caused by the ISI and limited ranges of total and relative output power controls. The simulation results show that the proposed system would be feasible because the obtained power penalties caused by the above impairment factors are negligible.
ER -
English
