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Title:
PCMモデムシステムにおける180°位相不変送信を達成するためのための方法と装置
Document Type and Number:
Japanese Patent JP4834874
Kind Code:
B2
Abstract:
In a PCM modem system in which equivalence classes are used to communicate information from a transmitter to a receiver, a method is provided to solve the problem of 180° phase reversals in the communications channel which result in a garbled transmission. This is accomplished by remapping the equivalence classes into a form that can be differentially encoded and decoded such that equivalence class identity is not lost during a phase reversal of the channel.

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Inventors:
Maurer, Patrick
Kim, Daeyoung
Meulabanzad, Sepur
Application Number:
JP2001557204A
Publication Date:
December 14, 2011
Filing Date:
February 01, 2001
Export Citation:
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Assignee:
General Electric Capital Corporation
International Classes:
H04L27/00; H04B7/005; H04B14/04; H04L25/49; H04M11/00
Domestic Patent References:
JPH06326742A1994-11-25
JPH0897866A1996-04-12
JPH1056486A1998-02-24
Foreign References:
US5818879A1998-10-06
WO1998045970A11998-10-15
Attorney, Agent or Firm:
Arakawa Satoshi
Hirokazu Ogura
Toshihisa Kurokawa



 
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