Wideband digital spectrometer
First Claim
1. A radio transceiver system for receiving communications in a band concurrently with transmissions from a transmitter transmitting in the band, comprising:
- (a) an input port, configured to receive a first signal comprising the communications in the band and the transmission in the band from the transmitter;
(b) a receiver, having a dynamic range sufficient to concurrently represent the communications in the band and the transmissions as a first analog signal;
(c) a plurality of analog time delay elements, each being configured to receive, selectively weight and combine an analog representation of the received first analog signal, to produce a second analog signal;
(d) a digitizer configured to produce a digitized signal from the second analog signal; and
(e) a processing subsystem, comprising at least one of a digital correlator and a Fourier transform processor, configured to;
control a respective weight of respective ones of the plurality of analog time delay elements in dependence on the digitized signal, to produce the second analog signal representing at least partial cancellation of the transmission in the band while preserving the communications in the band; and
digitally cancel at least a portion of a residual transmission in the band in dependence on at least digitized signal; and
(f) an output port configured to communicate the received communications.
2 Assignments
0 Petitions
Accused Products
Abstract
A processor, comprising a first data input configured to receive a stream of samples of a first signal having a spectral space, the stream having a data rate of at least 4 GHz; a second data input configured to receive a stream of samples of a second signal; a multitap correlator, configured to receive the first stream of samples and the second stream of samples, and producing at least one correlation output for each respective sequential sample of the first signal received; and a programmable control configured to alter a relationship of the stream of samples of the first signal and the stream of samples of the second signal, to thereby select, under program control, an alterable correlation output.
531 Citations
20 Claims
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1. A radio transceiver system for receiving communications in a band concurrently with transmissions from a transmitter transmitting in the band, comprising:
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(a) an input port, configured to receive a first signal comprising the communications in the band and the transmission in the band from the transmitter; (b) a receiver, having a dynamic range sufficient to concurrently represent the communications in the band and the transmissions as a first analog signal; (c) a plurality of analog time delay elements, each being configured to receive, selectively weight and combine an analog representation of the received first analog signal, to produce a second analog signal; (d) a digitizer configured to produce a digitized signal from the second analog signal; and (e) a processing subsystem, comprising at least one of a digital correlator and a Fourier transform processor, configured to; control a respective weight of respective ones of the plurality of analog time delay elements in dependence on the digitized signal, to produce the second analog signal representing at least partial cancellation of the transmission in the band while preserving the communications in the band; and digitally cancel at least a portion of a residual transmission in the band in dependence on at least digitized signal; and (f) an output port configured to communicate the received communications. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of receiving communications in a band concurrently with emission of transmissions in the same band, comprising:
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(a) receiving a first signal through an input port, comprising the communications in the band and the transmission in the band; (b) providing a plurality of analog time delay elements, each receiving an analog representation of the received first signal, the plurality of analog time delay elements being selectively weighted and combined to produce a processed analog signal; (e) controlling the weighting of the plurality of analog time delay elements, to produce the processed analog signal representing at least partial cancellation of the transmission in the band while preserving information of the communications in the band; (f) digitizing the processed analog signal with a digitizer to produce a digitized signal; (g) at least one of digitally correlating and digitally Fourier transforming at least a portion of the digitized signal; (h) generating a digital cancellation signal in dependence on at least the digitized signal; and (i) further cancelling the transmission in the band from the digitized signal, while preserving the information of the communications in the band. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A radio receiver for receiving information from radio frequency communications in a same band as a concurrently operating transmitter is transmitting interfering signals in, comprising:
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(a) an input port, configured to receive a first signal comprising the communications in the band received through an antenna and the transmissions in the band from the transmitter; (b) a plurality of analog time delay elements, each respective analog time delay element receiving an analog representation of the received first signal and applying a delay and a selectively controlled weighting, and together producing a combined analog signal; (c) a digitizer producing a digitized signal based on the combined analog signal; and (e) a processing subsystem, comprising at least one of a digital correlator and a processor configured to digitally compute a Fourier transform, configured to; selectively control a weighting of a combined output of the plurality of analog time delay elements, to achieve a second signal representing at least a partial cancellation of the interfering signals, while preserving the information; and digitally cancel residual components of the interfering signals in the digitized signal; and an output port configured to communicate an output signal comprising the information. - View Dependent Claims (19, 20)
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Specification