A New Frequency Switching/IM3 Reduction Method in Fiber-Optic Microcellular System

Toshiaki OKUNO; Hironori MIZUGUTI; Shozo KOMAKI; Norihiko MORINAGA

A New Frequency Switching/IM3 Reduction Method in Fiber-Optic Microcellular System

Toshiaki OKUNO, Hironori MIZUGUTI, Shozo KOMAKI, Norihiko MORINAGA

Full Text Views

0

Cite this

Summary :

Fiber-optic microcellular system has been studied actively as an excellent system for solving the equipment cost problems in microcellular systems. However, the occurrence of intermodulation distortion (IMD) arising from the nonlinearity of the laser diode used for E/O conversion which degrades the transmission quality is a serious problem in this system. In this paper, we propose a new frequency switching/IM3 reduction method, which dynamically reassigns the carrier frequencies to minimize the carrier to IMD power ratio under the hostile environment with time-varying received carrier strength, and analyze the performance improvements by the proposed method. The improvements obtained both for the worst value of the overall CNR and for the overall CNR in a specific user are numerically made clear. It is also shown that if the interval between frequency reassignings is set less than one second, a sufficient improvement in the overall CNR is achievable.

Publication: IEICE TRANSACTIONS on Communications Vol.E76-B No.9 pp.1178-1185

Publication Date: 1993/09/25

Publicized

Online ISSN

DOI

Type of Manuscript: Special Section PAPER (Special Issue on Fiber-optic Microcelluler Radio Communication System and Their Technologies)

Category: Propagation Matters

Cite this

Copy

Toshiaki OKUNO, Hironori MIZUGUTI, Shozo KOMAKI, Norihiko MORINAGA, "A New Frequency Switching/IM3 Reduction Method in Fiber-Optic Microcellular System" in IEICE TRANSACTIONS on Communications, vol. E76-B, no. 9, pp. 1178-1185, September 1993, doi: .
Abstract: Fiber-optic microcellular system has been studied actively as an excellent system for solving the equipment cost problems in microcellular systems. However, the occurrence of intermodulation distortion (IMD) arising from the nonlinearity of the laser diode used for E/O conversion which degrades the transmission quality is a serious problem in this system. In this paper, we propose a new frequency switching/IM3 reduction method, which dynamically reassigns the carrier frequencies to minimize the carrier to IMD power ratio under the hostile environment with time-varying received carrier strength, and analyze the performance improvements by the proposed method. The improvements obtained both for the worst value of the overall CNR and for the overall CNR in a specific user are numerically made clear. It is also shown that if the interval between frequency reassignings is set less than one second, a sufficient improvement in the overall CNR is achievable.
URL: https://global.ieice.org/en_transactions/communications/10.1587/e76-b_9_1178/_p

Copy

@ARTICLE{e76-b_9_1178,
author={Toshiaki OKUNO, Hironori MIZUGUTI, Shozo KOMAKI, Norihiko MORINAGA, },
journal={IEICE TRANSACTIONS on Communications},
title={A New Frequency Switching/IM3 Reduction Method in Fiber-Optic Microcellular System},
year={1993},
volume={E76-B},
number={9},
pages={1178-1185},
abstract={Fiber-optic microcellular system has been studied actively as an excellent system for solving the equipment cost problems in microcellular systems. However, the occurrence of intermodulation distortion (IMD) arising from the nonlinearity of the laser diode used for E/O conversion which degrades the transmission quality is a serious problem in this system. In this paper, we propose a new frequency switching/IM3 reduction method, which dynamically reassigns the carrier frequencies to minimize the carrier to IMD power ratio under the hostile environment with time-varying received carrier strength, and analyze the performance improvements by the proposed method. The improvements obtained both for the worst value of the overall CNR and for the overall CNR in a specific user are numerically made clear. It is also shown that if the interval between frequency reassignings is set less than one second, a sufficient improvement in the overall CNR is achievable.},
keywords={},
doi={},
ISSN={},
month={September},}

Copy

TY - JOUR
TI - A New Frequency Switching/IM3 Reduction Method in Fiber-Optic Microcellular System
T2 - IEICE TRANSACTIONS on Communications
SP - 1178
EP - 1185
AU - Toshiaki OKUNO
AU - Hironori MIZUGUTI
AU - Shozo KOMAKI
AU - Norihiko MORINAGA
PY - 1993
DO -
JO - IEICE TRANSACTIONS on Communications
SN -
VL - E76-B
IS - 9
JA - IEICE TRANSACTIONS on Communications
Y1 - September 1993
AB - Fiber-optic microcellular system has been studied actively as an excellent system for solving the equipment cost problems in microcellular systems. However, the occurrence of intermodulation distortion (IMD) arising from the nonlinearity of the laser diode used for E/O conversion which degrades the transmission quality is a serious problem in this system. In this paper, we propose a new frequency switching/IM3 reduction method, which dynamically reassigns the carrier frequencies to minimize the carrier to IMD power ratio under the hostile environment with time-varying received carrier strength, and analyze the performance improvements by the proposed method. The improvements obtained both for the worst value of the overall CNR and for the overall CNR in a specific user are numerically made clear. It is also shown that if the interval between frequency reassignings is set less than one second, a sufficient improvement in the overall CNR is achievable.
ER -