Digital self-interference residual cancellation
First Claim
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1. 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.
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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.
123 Citations
20 Claims
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1. A digital self-interference residual cancellation method, the method comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A device comprising:
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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. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. 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:
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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. - View Dependent Claims (18, 19, 20)
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Specification