Process and arrangement for the differential modulation of...

Details Process and arrangement for the differential modulation of... Process and arrangement for the differential modulation of...

H - Electricity

04

L

H04L 5/06 (2006.01) H04L 27/26 (2006.01)

Patent

CA 2109211

2109211 9220179 PCTABS00017 The invention relates to a digital modulation process and an arrangement for a multi-channel transmission system in which the data flow is distributed over a plurality of sub-carriers lying close together in the frequency range. Neighbouring sub-carriers are interlinked in such a way that the data on two adjacent sub-carriers are transmitted in phase difference. If such a frequency-differential modulation is coupled to a prior art differential modulation in which data symbols on a sub-carrier following one another in time are transmitted in phase difference, a markedly better transmission quality is obtained in the signals in the radio channels.

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