Method and device for iterative blind wideband sampling

摘要

Devices and methods for iteratively sampling a wideband signal in order to recover one or more narrowband signals are disclosed. In one aspect, a wideband signal is received and the signal is sampled using a sampling device, which includes an amplifier with an initial gain level, to produce a plurality of sampled signals. A first set of narrowband signals may be recovered from the plurality of sampled signals. Then, the wideband signal is re-sampled to produce a second plurality of sampled signals. The re-sampling includes increasing the gain of the amplifier to a second level and suppressing a component of the wideband signal. A second set of narrowband signals may then be recovered from the second set of sampled signals.

主权项

1. A method for iteratively sampling a signal comprising:
receiving a wideband signal; sampling said received wideband signal using a sampling device having an amplifier set at a first gain level to produce a first plurality of sampled signals; recovering from said first plurality of sampled signals a first narrow band signal; re-sampling said received wideband signal using said sampling device to produce a second plurality of sampled signals, wherein said re-sampling includes increasing the gain of said amplifier to a second gain level and suppressing a narrowband component of said wideband signal based on said recovered first narrow band signal; and recovering from said second plurality of sampled signals a second narrowband signal, wherein said sampling device further comprises a mixer configured to receive one or more mixing signals, and wherein the re-sampling includes mixing the received wideband signal with said one or more mixing signals using said mixer to produce a mixed signal, wherein said first narrow band signal has a first center frequency and said sampling device further comprises a second mixer configured to receive one or more periodic mixing signals having a frequency equal to said first center frequency, wherein the re-sampling includes mixing the received wideband signal with said one or more periodic mixing signals to produce a narrowband suppression signal, and wherein the suppressing further comprises subtracting said narrow band suppression signal from said mixed signal.