Title:
【発明の名称】決定指令制御装置とその調節方法
Document Type and Number:
Japanese Patent JP2718937
Kind Code:
B2
Abstract:
An improved decision-directed control circuit is disclosed which supplies adjustments to adaptive circuitry in a communications system. The improvement is achieved by only supplying adjustments when there is a high probability that the adjustment is correct. In the disclosed embodiments, this high probability equates, at a minimum, to times when the adaptive circuit output has an amplitude which lies outside of a range extending from the largest to the smallest value of the digital signal. This adjustment approach can be used to adjust a variety of adaptive circuits including transversal equalizers, timing recovery circuits, cross-polarization cancellers and carrier recovery circuits.
Inventors:
Martin Howard Mayers
Application Number:
JP4768388A
Publication Date:
February 25, 1998
Filing Date:
March 02, 1988
Export Citation:
Assignee:
American Telephone and Telegraph Campany
International Classes:
H04B3/06; H04B7/00; H04L1/00; H04L27/01; H04L7/02; H04L25/03; H04L25/06; H04L25/30; H04L27/06; H04L27/38; H04L7/00; (IPC1-7): H04B3/06; H04L1/00; H04L27/01
Domestic Patent References:
| JP623529A | ||||
| JP6212218A | ||||
| JP6297433A |
Other References:
【文献】米国特許4635276(US,A)
【文献】米国特許4458356(US,A)
【文献】欧州公開213309(EP,A1)
【文献】米国特許4458356(US,A)
【文献】欧州公開213309(EP,A1)
Attorney, Agent or Firm:
Hirofumi Mimata