US 2020/0065262 A1 · DATA PATH DYNAMIC RANGE OPTIMIZATION

Abstract

Systems and methods are disclosed for full utilization of a data path's dynamic range. In certain embodiments, an apparatus may comprise a circuit including a first filter to digitally filter and output a first signal, a second filter to digitally filter and output a second signal, a summing node, and a first adaptation circuit. The summing node combine the first signal and the second signal to generate a combined signal at a summing node output. The first adaptation circuit may be configured to receive the combined signal, and filter the first signal and the second signal to set a dynamic amplitude range of the combined signal at the summing node output by modifying a first coefficient of the first filter and a second coefficient of the second filter based on the combined signal.

Claims20

Dependent claims

An apparatus comprising:

a data channel circuit configured to receive and process a signal to generate a bit sequence encoded in the signal, the data channel circuit including:
an adaptation circuit configured to adjust an amplitude of the signal as it passes between components of the data channel circuit, to constrain the amplitude of the signal when it is output from a first component to approximately match an amplitude range that a second component is configured to receive, including:
generate an error value based on a difference between the signal output from the second component and a noiseless waveform of the signal;
and
adjust the amplitude output of the first component based on the error value.

2 more elements

An apparatus comprising:

a data channel circuit configured to process a plurality of signals, the data channel circuit including:
a first signal filter configured to adjust an amplitude of a first signal output from the first signal filter to a first input of a first summing circuit;
a second signal filter configured to adjust an amplitude of a second signal output from the second signal filter to a second input of the first summing circuit;
the first summing circuit configured to:
combine the first signal and the second signal to create a combined signal;
output the combined signal;
a pulse response filter configured to output a noiseless waveform signal to an error signal generation circuit;
the error signal generation circuit configured to:
receive the combined signal and the noiseless waveform signal;
output an error value based on a difference between the combined signal and the noiseless waveform;
and
the data channel circuit configured to adjust coefficients of the first signal filter and the second signal filter independently, based on the error value, in order to constrain the combined signal to a first selected amplitude range.

9 more elements

Dependencies are inferred from the claim text.

Data path dynamic range optimization

Life of this patent

Data path dynamic range optimization

Life of this patent

Abstract

Claims20