A receiver system and method are disclosed for processing multipath propagated signals and multiband signals. The receiver includes a zero-intermediate frequency converter for demodulating one of the plurality of multipath propagated signals to produce a demodulated signal; and a sampling module for sampling the demodulated signal.
1. A receiver for processing a plurality of multipath propagated signals, comprising:
a receiver configured to receive at least one of the plurality of multipath propagated signals, wherein the plurality of multipath propagated signals are associated with an ultra-wideband signal;
a zero-intermediate frequency converter for demodulating at least one of the plurality of multipath propagated signals to produce a demodulated signal;
a first sampling module for sampling a first sampling input signal that is associated with (1) the demodulated signal and (2) a first one of the plurality of multipath propagated signals; and
a second sampling module for sampling a second sampling input signal that is associated with (1) the demodulated signal and (2) a second one of the plurality of multipath propagated signals.
2. A receiver for processing a plurality of multipath propagated signals as recited in claim 1 , wherein the zero-intermediate frequency converter includes a mixer for mixing the at least one of the plurality of multipath propagated signals with a reference signal.
3. A receiver for processing a plurality of multipath propagated signals as recited in claim 1 , further including a frequency synthesizer for generating a reference signal, wherein the zero-intermediate frequency converter includes a mixer for mixing the at least one of the plurality of multipath propagated signals with the reference signal.
4. A receiver for processing a plurality of multipath propagated signals as recited in claim 1 , wherein the zero-intermediate frequency converter includes a first mixer for mixing the at least one of the plurality of multipath propagated signals with a first reference signal and a second mixer for mixing the at least one of the plurality of multipath propagated signals with a second reference signal having a phase shift relative to the first reference signal.
5. A receiver for processing a plurality of multipath propagated signals as recited in claim 1 , wherein the zero-intermediate frequency converter includes a first mixer for mixing the at least one of the plurality of multipath propagated signal with a first reference signal to obtain an I component; and a second mixer for mixing the at least one of the plurality of multipath propagated signal with a second reference signal having a 90° phase shift relative to the first reference signal to obtain a Q component.
6. A receiver for processing a plurality of multipath propagated signals as recited in claim 1 , wherein the plurality of multipath propagated signals includes multiband signals.
7. A receiver for processing a plurality of multipath propagated signals as recited in claim 1 , wherein the sampling module includes a track-and-hold module and a analog-to-digital converter for digitizing the output of the track-and-hold module.
8. A receiver for processing a plurality of multipath propagated signals as recited in claim 1 , further including a baseband processor for processing the output of the sampling module.
9. A method for processing a plurality of multipath propagated signals comprising:
receiving at least one of the plurality of multipath propagated signals, wherein the plurality of multipath propagated signals are associated with an ultra-wideband signal;
demodulating at least one of the plurality of multipath propagated signals using zero-intermediate frequency conversion to produce a demodulated signal;
sampling a first sampling input signal that is associated with (1) the demodulated signal and (2) a first one of the plurality of multipath propagated signals; and
sampling a second sampling input signal that is associated with (1) the demodulated signal and (2) a second one of the plurality of multipath propagated signals.
10. A method for processing a plurality of multipath propagated signals as recited in claim 9 , wherein sampling includes sampling a plurality of demodulated signals to produce a plurality of sampled signals and the method further comprises combining the plurality of sampled signals.
11. A method for processing a plurality of multipath propagated signals as recited in claim 9 , wherein the plurality of multipath propagated signals includes multiband signals.
12. A method for processing a plurality of multipath propagated signals as recited in claim 9 , further comprising selecting a subband.
13. A method for processing a plurality of multipath propagated signals as recited in claim 9 , further comprising selecting a subband using a matched filter.
14. A method for processing a plurality of multipath propagated signals as recited in claim 9 , wherein demodulating includes generating a continuous reference signal using a local oscillator.
15. A method for processing a plurality of multipath propagated signals as recited in claim 9 , wherein demodulating includes mixing the multipath propagated signals with a reference signal.
16. A method for processing a plurality of multipath propagated signals as recited in claim 9 , wherein demodulating includes mixing the multipath propagated signals with a reference signal and a phase shifted version of the reference signal.