Spectral sensing demodulator
View Patent ↗A spectral sensing demodulator can include a programmable filter bank and a reconfigurable processor coupled to the programmable filter bank. The programmable filter bank can frequency demultiplex a plurality of frequency division multiplexed channels from a frequency band into a plurality of demultiplexed channels. The reconfigurable processor can include a plurality of reconfigurable resources. Each resource can be alternatively be configured to demodulate a demultiplexed channel and to monitor a demultiplexed channel.
1. A method for spectral sensing demodulation, comprising:
providing a frequency demultiplexer and a plurality of processing resources coupled to the frequency demultiplexer;
frequency demultiplexing an input signal into a plurality of channels with the frequency demultiplexer, wherein at least one of the plurality of channels contains a modulated signal;
demodulating ones of the plurality of channels that contain a modulated signal using ones of the plurality of processing resources;
monitoring ones of the plurality of channels that do not contain a modulated signal using ones of the plurality of processing resources not assigned to demodulating; and
reconfiguring one of the plurality of processing resources between demodulating and monitoring when the corresponding channel state changes.
2. The method of claim 1 , further comprising reconfiguring the frequency demultiplexer to change either of: (i) the number of channels and (ii) the bandwidth of at least one channel.
3. The method of claim 1 , further comprising reconfiguring one of the plurality of processing resources from monitoring to demodulating when the corresponding channel transitions from not containing a modulated signal to containing a modulated signal.
4. The method of claim 1 , further comprising reconfiguring one of the plurality of processing resources from demodulating to monitoring when the corresponding channel transitions from containing a modulated signal to not containing a modulated signal.
5. The method of claim 1 , further comprising reconfiguring one of the plurality of processing resources to demodulate a different one of the plurality of channels.
6. The method of claim 1 , further comprising reconfiguring one of the plurality of processing resources to demodulate a different bandwidth one of the plurality of channels.
7. The method of claim 1 , further comprising sharing information obtained from the monitoring with a second spectral sensing demodulator.
8. The method of claim 7 , wherein the second spectral sensing demodulator is remotely located and the information is shared via a wireless link.