Method of implementing modulation and modulator

Details Method of implementing modulation and modulator Method of implementing modulation and modulator

2007-09-25

2007-09-25

Tse, Young T. (Department: 2611)

Pulse or digital communications

Transmitters

Angle modulation

C375S298000, C332S103000

Reexamination Certificate

active

10626840

ABSTRACT:
A transmitter in which modulator output signal values are generated by a multi-level modulation method. The transmitter comprises a look-up table for storing a pre-defined number of values corresponding to data symbols and representing a signal or a pulse format, registers for selecting values representing the signal or the pulse format to be used to defined in-phase and quadrature component values, and adders for defining the modulator output signal values by summing the in-phase and quadrature component values while the number of the in-phase and quadrature component values to be summed is determined by a number of inter-dependent symbols.

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