Methods and systems for canceling a blocking signal to obtain a desired signal

摘要

Disclosed herein are methods and systems for canceling a blocking signal to obtain a desired signal. An example process includes receiving both a blocking signal and a set of blocking bits corresponding to a demodulation of the blocking signal. A remodulated blocking signal is generated by modulating the received set of blocking bits. The remodulated blocking signal is passed through a blocking-band bandpass filter to generate an estimated blocking signal, and is also passed through a desired-band bandpass filter to generate an unconditioned reference signal. One or more signal-parameter differences between the blocking signal and the estimated blocking signal are identified, and one or more signal compensations are accordingly applied to the unconditioned reference signal to generate a conditioned reference signal, which is then output to a blocking-signal-canceling system.

主权项

1. A method of producing a reference signal for canceling a blocking signal to obtain a desired signal, the blocking signal being centered in a blocking-signal band, the desired signal being centered in a desired-signal band, the method comprising:
receiving the blocking signal; receiving a set of blocking bits corresponding to a demodulation of the blocking signal; generating a remodulated blocking signal at least in part by modulating the received set of blocking bits; generating an estimated blocking signal at least in part by passing the remodulated blocking signal through a blocking-band bandpass filter; generating an unconditioned reference signal at least in part by passing the remodulated blocking signal through a desired-band bandpass filter; identifying one or more signal-parameter differences between the blocking signal and the estimated blocking signal; generating a conditioned reference signal at least in part by applying one or more signal compensations to the unconditioned reference signal, the one or more applied signal compensations being based at least in part on the one or more identified signal-parameter differences; and outputting the conditioned reference signal to a blocking-signal-canceling system.