The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
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The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
O projeto de sistemas de comunicação sem fio com taxa de transmissão de 6 e 10 Mbit/s é apresentado para a banda ISM japonesa de 2.4 GHz, na qual é empregada uma técnica de espalhamento espectral denominada esquema "CFO-SS (Carrier Frequency Offset-Spread Spectrum)". No sistema CFO-SS, um único código PN é comumente atribuído a todas as portadoras multiplexadas sincronizadas, e a separação de frequência entre as portadoras é determinada pela taxa de transmissão de cada portadora. Para realizar o sistema CFO-SS, é apresentado primeiro um esquema de aquisição e rastreamento de tempo, uma parte importante do projeto. A seguir, o desempenho de erros de bits e pacotes é investigado em ambientes multipercursos severos com/sem um receptor RAKE. A degradação por limitações de largura de banda do canal, imprecisão de frequência do hardware e interferência co-canal (CCI) também é investigada por simulação computacional. Os resultados da simulação apresentados confirmaram desempenho suficiente do sistema CFO-SS para sistemas LAN sem fio usando a banda ISM de 2.4 GHz.
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Hiroyasu ISHIKAWA, Hideyuki SHINONAGA, "Design of Carrier Frequency Offset-Spread Spectrum (CFO-SS) System Using 2.4 GHz ISM Band" in IEICE TRANSACTIONS on Fundamentals,
vol. E82-A, no. 12, pp. 2669-2676, December 1999, doi: .
Abstract: Design of wireless communications systems with a transmission rate of 6 and 10 Mbit/s is presented for the 2.4 GHz Japanese ISM band, in which a spread spectrum technique named "CFO-SS (Carrier Frequency Offset-Spread Spectrum)" scheme is employed. In the CFO-SS system, a single PN code is commonly assigned to all the synchronized multiplexed carriers, and the frequency separation between carriers is determined by the transmission rate of each carrier. To realize the CFO-SS system, a timing acquisition and tracking scheme, an important part of the design, is presented first. Next, bit and packet error performance is investigated under severe multipath environments with/without a RAKE receiver. Degradation by channel bandwidth limitations, frequency inaccuracy of the hardware and co-channel interference (CCI) is also investigated by computer simulation. Simulation results presented confirmed sufficient performance of the CFO-SS system for wireless LAN systems using the 2.4 GHz ISM band.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1587/e82-a_12_2669/_p
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@ARTICLE{e82-a_12_2669,
author={Hiroyasu ISHIKAWA, Hideyuki SHINONAGA, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Design of Carrier Frequency Offset-Spread Spectrum (CFO-SS) System Using 2.4 GHz ISM Band},
year={1999},
volume={E82-A},
number={12},
pages={2669-2676},
abstract={Design of wireless communications systems with a transmission rate of 6 and 10 Mbit/s is presented for the 2.4 GHz Japanese ISM band, in which a spread spectrum technique named "CFO-SS (Carrier Frequency Offset-Spread Spectrum)" scheme is employed. In the CFO-SS system, a single PN code is commonly assigned to all the synchronized multiplexed carriers, and the frequency separation between carriers is determined by the transmission rate of each carrier. To realize the CFO-SS system, a timing acquisition and tracking scheme, an important part of the design, is presented first. Next, bit and packet error performance is investigated under severe multipath environments with/without a RAKE receiver. Degradation by channel bandwidth limitations, frequency inaccuracy of the hardware and co-channel interference (CCI) is also investigated by computer simulation. Simulation results presented confirmed sufficient performance of the CFO-SS system for wireless LAN systems using the 2.4 GHz ISM band.},
keywords={},
doi={},
ISSN={},
month={December},}
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TY - JOUR
TI - Design of Carrier Frequency Offset-Spread Spectrum (CFO-SS) System Using 2.4 GHz ISM Band
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 2669
EP - 2676
AU - Hiroyasu ISHIKAWA
AU - Hideyuki SHINONAGA
PY - 1999
DO -
JO - IEICE TRANSACTIONS on Fundamentals
SN -
VL - E82-A
IS - 12
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - December 1999
AB - Design of wireless communications systems with a transmission rate of 6 and 10 Mbit/s is presented for the 2.4 GHz Japanese ISM band, in which a spread spectrum technique named "CFO-SS (Carrier Frequency Offset-Spread Spectrum)" scheme is employed. In the CFO-SS system, a single PN code is commonly assigned to all the synchronized multiplexed carriers, and the frequency separation between carriers is determined by the transmission rate of each carrier. To realize the CFO-SS system, a timing acquisition and tracking scheme, an important part of the design, is presented first. Next, bit and packet error performance is investigated under severe multipath environments with/without a RAKE receiver. Degradation by channel bandwidth limitations, frequency inaccuracy of the hardware and co-channel interference (CCI) is also investigated by computer simulation. Simulation results presented confirmed sufficient performance of the CFO-SS system for wireless LAN systems using the 2.4 GHz ISM band.
ER -