Digital self-interference residual cancellation
AssigneeLGS Innovations LLC
InventorsRiley Nelson Pack, Alan Scott Brannon, Benjamin Joseph Baker
Life of this patent
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Abstract
The present application a digital self-interference residual cancellation method that adjusts a magnitude of a sampled transmit signal based on compared magnitude and phases associated with tones. The digital self-interference residual cancellation method may follow an analog carrier cancellation stage where the digital self-interference residual cancellation is based on a determination of the channel circuit response used to control an infinite impulse response filter which can compensate using both poles and zeroes.
Claims20
A digital self-interference residual cancellation method, the method comprising:
- determining a first magnitude and a first phase of a tone in a receive signal;
- determining a second magnitude and a second phase of the tone in a sampled transmit signal;
- comparing the first magnitude with the second magnitude;
- comparing the first phase with the second phase;
- adjusting a magnitude of the sampled transmit signal based on the comparing of the first magnitude with the second magnitude;
- and
- adjusting a phase of the sampled transmit signal based on the comparing of the first phase with the second phase.
A device comprising:
- a processor;
- and
- a memory coupled with the processor, the memory comprising executable instructions that when executed by the processor cause the processor to effectuate operations comprising:
- determining a first magnitude and a first phase of a tone in a receive signal;
- determining a second magnitude and a second phase of the tone in a sampled transmit signal;
- comparing the first magnitude with the second magnitude;
- comparing the first phase with the second phase;
- adjusting a magnitude of the sampled transmit signal based on the comparing of the first magnitude with the second magnitude;
- and
- adjusting a phase of the sampled transmit signal based on the comparing of the first phase with the second phase.
A non-transitory computer readable storage medium comprising computer executable instructions that when executed by a computing device cause said computing device to effectuate operations comprising:
- determining a first magnitude and a first phase of a tone in a receive signal;
- determining a second magnitude and a second phase of the tone in a sampled transmit signal;
- comparing the first magnitude with the second magnitude;
- comparing the first phase with the second phase;
- adjusting a magnitude of the sampled transmit signal based on the comparing of the first magnitude with the second magnitude;
- and
- adjusting a phase of the sampled transmit signal based on the comparing of the first phase with the second phase.
Dependencies are inferred from the claim text.