High-speed receiver architecture
AssigneeInphi Corporation
InventorsOscar Ernesto AGAZZI, Diego Ernesto CRIVELLI, Hugo Santiago CARRER, Mario Rafael HUEDA, German Cesar Augusto LUNA, Carl GRACE
Life of this patent
Estimating the term…
Abstract
A receiver (e.g., for a 10 G fiber communications link) includes an interleaved ADC coupled to a multi-channel equalizer that can provide different equalization for different ADC channels within the interleaved ADC. That is, the multi-channel equalizer can compensate for channel-dependent impairments. In one approach, the multi-channel equalizer is a feedforward equalizer (FFE) coupled to a Viterbi decorder, for example, a sliding block Viterbi decoder (SBVD); and the FFE and/or the channel estimator for the Viterbi decoder are adapted using the LMS algorithm.
Claims20
A receiver device, the device comprising:
- an interleaved analog-to-digital converter (ADC) configured to generate signal samples from an input signal, the interleaved ADC including
- an analog demultiplexer configured to receive the input signal;
- a plurality of ADC channels electrically coupled to the analog demultiplexer, each of the plurality of ADC channels having an input track-and-hold stage coupled to the analog demultiplexer and an ADC stage electrically coupled to the input track-and-hold stage;
- and
- a digital retimer electrically coupled to the ADC stage of each of the plurality of ADC channels.
A method for operating a receiver device, the method comprising:
- demultiplexing, by an analog demultiplexer of an interleaved analog-to-digital converter (ADC), an input signal to a plurality of ADC channels of the interleaved ADC;
- holding, by an input track-and-hold stage of each of the plurality of ADC channels coupled to the analog demultiplexer, the input signal;
- converting, by an ADC stage of each of the plurality of ADC channels coupled to the input track-and-hold stage, the input signals;
- and
- retiming, by a digital retimer of the interleaved ADC coupled to the plurality of ADC channels, the input signal.
A transceiver device, the device comprising:
- a transmitter device;
- a channel having a first end and a second end, the first end being coupled to the transmitter device;
- and
- a receiver device coupled the second end of the channel, the receiver device including an interleaved analog-to-digital converter (ADC) configured to generate signal samples from an input signal received from the transmitter over the channel;
- wherein the interleaved ADC includes
- an analog demultiplexer configured to receive the input signal;
- a plurality of ADC channels electrically coupled to the analog demultiplexer, each of the plurality of ADC channels having an input track-and-hold stage coupled to the analog demultiplexer and an ADC stage electrically coupled to the input track-and-hold stage;
- and
- a digital retimer electrically coupled to the ADC stage of each of the plurality of ADC channels.
Dependencies are inferred from the claim text.