Title:
BASE BAND SIGNAL RECEIVER
Document Type and Number:
Japanese Patent JP3117308
Kind Code:
B2
Abstract:
PURPOSE: To ensure the stable operation of a base band signal receiver by securing the coincidence between the eye position of an eye pattern, i.e., the detection output of each time slot and the rising of a baud rate clock synchronized with a system clock.
CONSTITUTION: The received base band signals of channels I and Q are converted into the digital signals by the A/D converters 2 and 7 respectively. The inter-code interferences of the digital signals are suppressed by the RCROF filters 18 and 19. A received clock reproduction circuit 10 reproduces a received clock out of the detection output of a detection circuit 5. Then a plural-time slot control circuit 20 detects the pase errors of plural time slots and outputs a control signal to an RCROF coefficient control circuit 21 for phase control. The circuit 21 controls the filter coefficients of both filters 18 and 19 based on the control signal and corrects the phases of the time slots so that these phases are synchronized with the total system clock of a base band signal receiver.
Inventors:
Narutoshi Saito
Mutsumi Serizawa
Mutsumi Serizawa
Application Number:
JP79493A
Publication Date:
December 11, 2000
Filing Date:
January 06, 1993
Export Citation:
Assignee:
Toshiba Corporation
International Classes:
H04W76/02; H04B7/26; H04J3/00; H04J3/06; H04L27/22; H04W72/08; (IPC1-7): H04B7/26; H04J3/00; H04J3/06
Domestic Patent References:
| JP5206969A |
Attorney, Agent or Firm:
Takahisa Kimura
Previous Patent: JPH03117307
Next Patent: SPEED CONTROL DEVICE OF CONTINUOUS STEEL SHEET TREATMENT LINE
Next Patent: SPEED CONTROL DEVICE OF CONTINUOUS STEEL SHEET TREATMENT LINE