A New Frequency Switching / IM3 Reduction Method in Fiber-Optic Microcellular System (Special Issue on Fiber-optic Microcellular Radio Communication System and Their Technologies)
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概要
- 論文の詳細を見る
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.
- 社団法人電子情報通信学会の論文
- 1993-09-25
著者
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Komaki Shozo
Department Of Communications Engineering Faculty Of Engineering Osaka University
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Morinaga Norihiko
Faculty Of Engineering Osaka University
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Morinaga Norihiko
The Faculty Of Engineering Osaka University
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Morinaga N
Department Of Information Technology Faculty Of Infrastructural Technologies Hiroshima International
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Komaki Shozo
Osaka University
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Komaki Shozo
Faculty Of Engineering Osaka University
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Komaki S
Department Of Communications Engineering Graduate School Of Engineering Osaka University
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Okuno Toshiaki
Faculty of Engineering, Osaka University
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Mizuguti Hironori
Faculty of Engineering, Osaka University
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Okuno T
Sumitomo Electric Ltd. Yokohama‐shi Jpn
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Mizuguti Hironori
Faculty Of Engineering Osaka University
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