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Optical conversion relay amplification system

  • US 6,337,754 B1
  • Filed: 11/17/1998
  • Issued: 01/08/2002
  • Est. Priority Date: 11/20/1997
  • Status: Expired due to Fees
First Claim
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1. An optical conversion relay amplification system having a fixed central station for transmission and receiving of a radio signal from a base station and a plurality of fixed relay stations located in intermediate position in an uplink optical fiber line to said fixed central station, whereinsaid fixed central station is a fixed central station converting a radio signal arrived from said base station to an optical signal to output to said downlink optical fiber line, and also converting the optical signal inputted from said uplink optical fiber line to a high frequency electric signal to send to said base station, and said fixed relay station is a fixed relay station dividing the downlink optical signal from said downlink optical fiber line, multiplexing with the divided downlink optical signal and an uplink optical signal from said uplink optical fiber line, converting the multiplexed optical signal to an electric signal, transmitting the downlink electric signal contained in said converted electric signal to portable phone by wireless system, and also receiving the radio signal from the said portable phone to multiplex with an uplink electric signal contained in said converted electric signal and converting the multiplexed electric signal to an optical signal to output to said uplink optical fiber line.

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