Patent ID: 11936538
Assignee: ROHDE & SCHWARZ GMBH & CO. KG
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 18:
19. A method of determining filter coefficients of an equalization circuit of a phase-shifted sampling circuit according to claim 1, wherein the equalization circuit includes an analog-to-digital converter (ADC) equalizer sub-circuit configured to compensate transfer function mismatches within an ADC circuit and/or an overall equalizer sub-circuit configured to compensate transfer function mismatches originating upstream of a primary sampler circuit, the method comprising the following steps:
receiving an input signal;
processing the input signal by the primary sampler circuit and the ADC circuit, thereby obtaining at least a first digital output signal and a second digital output signal;
processing the first digital output signal and the second digital output signal by the equalization circuit, thereby obtaining an equalized output signal;
providing a global cost function that depends on filter coefficients of the individual equalizer sub-circuits, the input signal, and the equalized output signal; and
determining the filter coefficients of the equalizer sub-circuits by a global variation of the global cost function.