光無線副搬送波多重通信の特性評価  [in Japanese] Performance Evaluation of the Atmospheric Optical Subcarrier Multiplexing Systems  [in Japanese]

Abstract

本研究では,光無線通信における副搬送波多重(Sub-Carrier Multiplexing:SCM)通信の特性について検討する.光無線SCMにおいてはレーザダイオード(LD)を変調する入力信号のピークが大きくなり,LDの非線形特性により相互変調(Intermodulation:IM)雑音が発生し,伝送特性を劣化させる大きな要因になる.ここでは,3波多重したときの,IM雑音の影響を解析する.2次,3次のIM雑音とAPDで発生するショット雑音と熱雑音を考慮し,受信信号のSN比と誤り率を導出する.さらにSN比を最大とするようなLDの最適な動作点を求める.

The performance of the atmospheric optical subearrier multiplex (SCM) systems is evaluated. Three binary PSK (BPSK) signals are multiplexed and modulated by laser diode (LD) operated at nonlinear region, which causes intermodulation (IM) distortion to degrade system performance. The Signal-to-Noise ratio (SNR) of the received BPSK signal is derived considering shot noise, thermal noise of avalanche photo diode (APD) and second and third order IM. The optimum amplitude of the BPSK giving maximum SNR is shown.

Journal

IEICE technical report. Image engineering   [List of Volumes]

IEICE technical report. Image engineering 102(519), 33-38, 2002-12-10  [Table of Contents]

The Institute of Electronics, Information and Communication Engineers

References:  6

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Codes

  • NII Article ID (NAID) :
    110003176210
  • NII NACSIS-CAT ID (NCID) :
    AN10013006
  • Text Lang :
    JPN
  • Article Type :
    ART
  • ISSN :
    09135685
  • NDL Article ID :
    6434891
  • NDL Source Classification :
    ZN33(科学技術--電気工学・電気機械工業--電子工学・電気通信)
  • NDL Call No. :
    Z16-940
  • Databases :
    CJP  NDL  NII-ELS