Digital data exchange device in a CDMA system

Details Digital data exchange device in a CDMA system Digital data exchange device in a CDMA system

2008-05-15

2009-12-15

Ha, Dac V (Department: 2611)

Pulse or digital communications

Transceivers

C375S222000, C375S141000, C375S354000, C370S278000, C370S320000, C370S479000, C455S063100, C455S515000, C455S522000

Reexamination Certificate

active

07633997

ABSTRACT:
The invention relates to a device for exchanging digital data between several sources and at least one hub in a CDMA system, characterised in that it comprises a number n of digital transmission/reception circuits (1) installed in parallel, each circuit (1) comprising a transmitter (2i) comprising means of generating an integer number Ncof codes that will be used for spectral spreading of data to be transmitted and a receiver (4i) comprising means (46, 48) of detecting the access of new sources to the CDMA system transmission channel and means (49) of generating synchronisation signals and power control signals corresponding to each detected new source.

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