Interpolator, a resampler employing the interpolator and method of interpolating a signal associated therewith

A resampler for use with a bit pump having a receive path couplable to an oscillator, comprising:

• an interpolation stage, coupled to an input of said resampler, configured to receive a one-bit input signal representing at least a portion of a receive signal propagating along said receive path and including:
• a multiple order interpolation filter, configured to generate an intermediate sample range from at least three input samples associated with said one-bit input signal, and
• a linear interpolation filter, associated with said multiple order interpolation filter, configured to develop a plurality of intermediate samples within said intermediate sample range;
• and
• a selection stage, coupled to said interpolation stage, configured to select one of said plurality of intermediate samples thereby providing an output sample that corresponds to a phase of said oscillator.

A method of resampling at least a portion of a receive signal propagating along a receive path couplable to an oscillator of a bit pump, comprising:

• receiving a one-bit input signal representing at least a portion of said receive signal;
• generating an intermediate sample range from at least three input samples associated with said one-bit input signal;
• developing a plurality of intermediate samples within said intermediate sample range;
• and
• selecting one of said plurality of intermediate samples thereby providing an output sample that corresponds to a phase of said oscillator.

A bit pump having a transmit and receive path, comprising:

• a precoder, coupled to said transmit path, that preconditions a transmit signal propagating along said transmit path;
• a modulator, coupled to said precoder, that reduces a noise associated with said transmit signal;
• an analog-to-digital converter, coupled to said receive path, that converts a receive signal received at said bit pump into a digital format;
• a resampler, coupled to said analog-to-digital converter and an oscillator of said bit pump, including:
• an interpolation-stage, coupled to an input of said resampler, that receives a one-bit input signal representing at least a portion of said receive signal, including:
• a multiple order interpolation filter that generates an intermediate sample range from at least three input samples associated with said one-bit input signal, and
• a linear interpolation filter, associated with said multiple order interpolation filter, that develops a plurality of intermediate samples within said intermediate sample range, and
• a selection stage, coupled to said interpolation stage, that selects one of said plurality of intermediate samples thereby providing an output sample that corresponds to a phase of said oscillator;
• and
• an echo canceling system, coupled between said transmit and receive path, that attenuates an echo in said receive signal.

A transceiver, comprising:

• a framer that formats signals within said transceiver;
• a bit pump coupled to said framer and having a transmit and receive path, including:
• a precoder, coupled to said transmit path, that preconditions a transmit signal propagating along said transmit path;
• a modulator, coupled to said precoder, that reduces a noise associated with said transmit signal;
• an analog-to-digital converter, coupled to said receive path, that converts a receive signal received at said bit pump into a digital format;
• a resampler, coupled to said analog-to-digital converter and an oscillator of said bit pump, including:
• an interpolation stage, coupled to an input of said resampler, that receives a one-bit input signal representing at least a portion of said receive signal, including:
• a multiple order interpolation filter that generates an intermediate sample range from at least three input samples associated with said one-bit input signal, and
• a linear interpolation filter, associated with said multiple order interpolation filter, that develops a plurality of intermediate samples within said intermediate sample range, and
• a selection stage, coupled to said interpolation stage, that selects one of said plurality of intermediate samples thereby providing in output sample that corresponds to a phase of said oscillator;
• and
• an echo canceling system, coupled between said transmit and receive path, that attenuates an echo in said receive signal;
• and
• a controller that controls an operation of said framer and said bit pump.