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Title:
METHOD AND APPARATUS FOR TRANSMITTING MESSAGE FOR DIGITAL WIRELESS TRANSMISSION SYSTEM
Document Type and Number:
Japanese Patent JPS61156935
Kind Code:
A
Abstract:
A method and apparatus for use in a digital radio transmission system comprising stationary radio stations arranged in a cellular network and to which are assigned a plurality of mobile radio stations. Transmission of digital messages from a stationary radio station to the mobile radio stations assigned to it is effected by wide-band code division multiplex modulation, and transmission of digital messages from such mobile radio stations to the stationary radio station is effected by narrow-band frequency multiplex modulation. This reduces bandwidth requirements and improves the signal-to-noise ratio for each direction of transmission.

Inventors:
KURISUTOFU GURAUERU
RUUTOBUIHI KITSUTERU
BUERUNAA SHIYUMITSUTO
URURITSUHI BUERENSU
Application Number:
JP28451485A
Publication Date:
July 16, 1986
Filing Date:
December 19, 1985
Export Citation:
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Assignee:
PHILIPS NV
International Classes:
H04B7/26; H04J13/00; H04W88/08; H04J4/00; (IPC1-7): H04B7/26; H04J4/00; H04J13/00
Domestic Patent References:
JP59500592Y
Attorney, Agent or Firm:
Toshio Yano



 
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