Title:
FAULTY SYNCHRONIZATION DETECTOR
Document Type and Number:
Japanese Patent JP3037201
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To detect faulty synchronization in a short time even when a phase change in the same direction is consecutive.
SOLUTION: The detector is provided with an up-down counter 103, which counts down number of clocks by a prescribed count when a sign of a phase change for the first half of a symbol period differs from a sign of a phase change for the latter half, counts up number of clocks by a prescribed count that is smaller than the prescribed count above when a sign of a phase change for the first half of the symbol period differs from a sign of a phase change for the latter half, and when the count is decreased up to a predetermined count, it is recognized as occurrence of symbol timing faulty synchronization.
Inventors:
Hideaki Nobusawa
Application Number:
JP13410297A
Publication Date:
April 24, 2000
Filing Date:
May 23, 1997
Export Citation:
Assignee:
Saitama NEC Corporation
International Classes:
H04L7/00; H04L7/033; H04L27/22; (IPC1-7): H04L27/22; H04L7/00
Domestic Patent References:
| JP7321863A | ||||
| JP9214464A | ||||
| JP10247954A |
Attorney, Agent or Firm:
Nobuo Takahashi (3 outside)