Original document(10 pages) Authorized document(11 pages) 中文版
    A signal transmission system has a number of wave division multiplex optical carriers linking a number of switching units arranged in a closed ring network. The carriers are amplified to compensate for loss and attenuation, but the ring gain of each carrier must be less than unity to prevent unwanted signal oscillation. An automatic gain control arrangement is operative for each optical carrier which is detected as being present at a switching unit, and the gain control is disabled for each carrier which is detected as being absent.
Application Number
申请号
00104112 Application Date
申请日
2000.03.10
Title 名称 Signal transmission system
Publication Number
公开号
1267156 Publication Date
公开日
2000.09.20
Approval Pub. Date 2005.03.09 Granted Pub. Date 2005.03.09
International Classification 分类号 H04J14/02
Applicant(s) Name
申请人
Marconi Communications Ltd.
Address 地址
Inventor(s) Name 发明人 P. A. Arnold;P. A. Carlan;H. R. Cralingborn
Attorney & Agent 代理人 wu zengyong

  
Simultaneous emission of random insertted pulse train
Orthogonal frequency division multiplexing communication apparatus
Spread spectrum multiaddress system based on orthogonal frequency division multiplexing tech. using directional antenna
Spread spectrum multiaddress based on orthogonal frequency division multiplexing tech.
Spread spectrum multiaddress based on orthogonal frequency division multiplexing technique
Correlator for carrying out low current consumption
Signal transmission system
Signal transmission system
Power control method for radio communication system having multiple information rates
Method for transmission of information
Note:All patent data come from State Intellectual Property Office of the People's Republic of China. If there were discrepancies between here and the State Intellectual Property office, the later is more accurate. The patent data is only for public exchange and learning purposes. We are not responsible for the adverse consequences with unverified use of the data.