Demodulating a signal having multiple frequency bands

Details Demodulating a signal having multiple frequency bands Demodulating a signal having multiple frequency bands

2004-12-20

2010-11-16

Liu, Shuwang (Department: 2611)

Pulse or digital communications

Systems using alternating or pulsating current

Plural channels for transmission of a single pulse train

C375S260000, C375S267000, C375S269000, C375S324000, C455S059000, C329S304000, C329S306000, C370S204000, C370S206000

Reexamination Certificate

active

07835457

ABSTRACT:
A method and an arrangement for processing a received signal which comprises phase-shift modulated or amplitude-quadrature modulated part-signals which are transmitted in a plurality of different frequency bands, wherein the received signal is processed in a plurality of stages in succession, by multiplying all the input signals to each of the stages by two mutually orthogonal signals in each case to form two intermediate signals in each case, wherein the intermediate signals from one stage in each case act as the input signals to whichever is the succeeding stage in the particular case and the received signal acts as the input signal to the first stage, and wherein an in-phase and/or an quadrature component of the individual part-signals in the different frequency bands are determined from the intermediate signals from the last stage. Parallel, simultaneous reception of a plurality of frequency bands can be implemented relatively easily in this way.

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