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Patent Searching and Data


Title:
CHANNEL SEPARATION FILTER, PSK DEMODULATOR AND PSK RECEIVER
Document Type and Number:
Japanese Patent JPH09200165
Kind Code:
A
Abstract:

To separate plural a frequency-multiplexed plural-channel signal into channel signals by providing a specific filter bank to a channel separate means.

A channel separation filter bank 10 is made up of filter banks 10a-10c and a filter bank of each stage is made up of one or plural sets of positive pass band filters(PPF) and negative pass band filters(NPF) in pairs and each down-sampling processing unit(DSC) applying down-sampling processing to outputs of the PPF and NPF. The PPFs 101, 201, 221, 301, 321, 341, 361 are configured to have a same positive pass band and pass only signal components of the positive pass band from received complex data signals and provide an output. Furthermore, the NPFs 111, 211, 231, 311, 331, 351, 371 are configured to have a same negative pass band and pass only signal components of the negative pass band from received complex data signals and provide an output.


Inventors:
TANAKA RYOHEI
OKADA MINORU
HARA SHINSUKE
KOMAKI SHOZO
MORINAGA NORIHIKO
Application Number:
JP1996000006445
Publication Date:
July 31, 1997
Filing Date:
January 18, 1996
Export Citation:
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Assignee:
DAIHEN CORP
International Classes:
H04L27/22; H03H17/02; H04J1/00; H04J1/04; H04L5/06; (IPC1-7): H04J1/00; H04L27/22
Attorney, Agent or Firm:
青山 葆 (外2名)