Title:
SIGNAL TRANSMISSION SYSTEM AND SIGNAL TRANSMISSION METHOD
Document Type and Number:
Japanese Patent JP3872028
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a mobile communication wireless system utilizing an optical channel capable of recovering data otherwise ordinarily falling into errors to the utmost and realizing reduction in an error rate.
SOLUTION: An equalizer 8 is located between a reception stage of an optical module 7a and a serial parallel / parallel serial converter 10 for carrying out serial parallel conversion, a controller 9 automatically sets an optimum value to an initial value of a filter parameter of the equalizer 8 depending on a type of the optical module in advance, and on the occurrence of an error due to electric characteristics such as a substrate noise and optical characteristic deterioration, the controller 9 automatically selects any of several filter parameters for the equalizer 8 and repeats data retransmission and thereafter activates the system under the filter parameter setting value of the equalizer 8.
Inventors:
Takashi Otani
Application Number:
JP2003065178A
Publication Date:
January 24, 2007
Filing Date:
March 11, 2003
Export Citation:
Assignee:
Saitama NEC Corporation
International Classes:
H04B3/04; H04B10/07; H04B10/2507; H04B10/2575; H04B10/40; H04B10/50; H04B10/524; H04B10/60; H04B10/69; (IPC1-7): H04B3/04; H04B10/04; H04B10/06; H04B10/14; H04B10/26; H04B10/28
Domestic Patent References:
| JP61167229A | ||||
| JP6164452A | ||||
| JP57146458U | ||||
| JP54059810A | ||||
| JP6315010A | ||||
| JP9326755A | ||||
| JP6085752A | ||||
| JP7320403A | ||||
| JP9055721A | ||||
| JP6121001A | ||||
| JP4179319A | ||||
| JP61244171A | ||||
| JP63114370A | ||||
| JP2105638A |
Attorney, Agent or Firm:
Jyohei Yamashita
Hiroshi Shimura
Michio Nagai
Hiroshi Shimura
Michio Nagai
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