Method for the transmission of digital data in radio paging syst

Details Method for the transmission of digital data in radio paging syst Method for the transmission of digital data in radio paging syst

1993-04-06

1995-09-19

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 76, 370 951, 3701001, 375260, 455 382, H04J 114, H04J 1100

Patent

active

054522889

ABSTRACT:
A method for the transmission of digital data elements including radio paging information elements, wherein the data elements are transmitted according to a technique of transmission implementing a plurality of orthogonal carrier frequencies (the COFDM technique), the signal being organized in frames comprising, firstly, at least one first channel called a fast information channel, comprising at least one symbol of data elements, the carrier frequencies of the symbols being modulated by data elements that are not temporally interleaved, and at least one second channel, called a main channel, comprising at least one symbol of data elements, the carrier frequencies of the symbols being modulated by data elements that are temporally interleaved beforehand, a frame number belonging to a set of predefined frame numbers being regularly inserted into the fast information channel, each of the radio paging receivers being assigned at least one of the frame numbers.

REFERENCES:
patent: 4881241 (1989-11-01), Pommier et al.
patent: 5168271 (1992-12-01), Hoff
patent: 5191576 (1993-02-01), Pommier et al.
patent: 5197061 (1993-03-01), Halbert-Lassalle
patent: 5228025 (1993-07-01), Le Floch et al.
patent: 5241305 (1993-08-01), Fascenda et al.

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