Selecting A Signal Phase In A Communication System
AssigneeNantWorks, LLC
InventorThomas GUERENA
Life of this patent
Estimating the term…
Abstract
In some aspects, there is provided a method. The method may include estimating, based on a first signal-phase in a plurality of signal-phases associated with an input signal, a first channel impulse response; estimating, based on a second signal-phase in the plurality of signal-phases, a second channel impulse response; selecting, based on at least one characteristic of the estimated first channel impulse response and the estimated second channel impulse response, a signal-phase from the plurality of signal-phases; equalizing, based on the selected signal phase, the input signal to produce an equalized signal; and outputting, to a symbol detector, the equalized signal. Related systems, methods, and articles of manufacture are also disclosed.
Claims20
A communication device comprising:
- a receiver input configured to receive an analog input signal from another transmitting device;
- at least one processor;
- and
- at least one memory including computer program code, the at least one memory and the computer program code configured to, with the at least one processor, cause the communication device to at least:
- estimate, based on a first signal phase in a plurality of signal phases associated with an input signal, a first channel impulse response;
- estimate, based on a second signal phase in the plurality of signal phases, a second channel impulse response;
- select, based on at least one characteristic of the estimated first channel impulse response and the estimated second channel impulse response, a signal phase from the plurality of signal phases;
- equalize, based on the selected signal phase, the input signal to produce an equalized signal;
- and
- output, to one or more downstream processing stages, the equalized signal.
A communication device comprising:
- a receiver input configured to receive an analog input signal from another transmitting device;
- an analog-to-digital (ADC) converter configured to sample the analog input signal and provide a data stream including one or more data packets;
- a channel impulse response (CIR) estimator-generator configured to receive channel-estimation data for each of the one or more data packets, and generate a CIR estimate including a plurality of sequences each associated with a different signal phase of the sampled analog input signal;
- a phase selection logic configured to determine, based on CIR characteristics received from the CIR estimator-generator, a signal phase for equalization;
- and
- a symbol-spaced equalizer configured to,
- generate equalization coefficients based on one of the plurality of sequences of the CIR estimate which corresponds to the determined signal phase for equalization, and
- output an equalized signal, based on the equalization coefficients, to one or more downstream processing stages.
Dependencies are inferred from the claim text.