Systems and methods for multi-rate digital self-interference cancellation
First Claim
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1. A system for multi-rate digital self-interference cancellation comprising:
- a signal component generation system coupled to a digital transmit signal of a communication system that generates a set of signal components from the digital transmit signal, wherein the signal component generation system comprises a first transform path and a second transform path;
the first transform path having a component generator of order one, and the second transform path having a component generator of order three;
wherein the set of signal components comprises a first signal component of order one and a second signal component of order three;
a multi-rate adaptive filter that transforms the set of signal components into a digital self-interference cancellation signal according to a transform configuration, wherein the digital self-interference cancellation signal is combined with a receive signal of the communication system to form an interference-reduced receive signal; and
a transform adaptor that dynamically sets the transform configuration in response to changes in the interference-reduced receive signal.
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Abstract
A system for multi-rate digital self-interference cancellation including a signal component generation system coupled to a digital transmit signal of a communication system that generates a set of signal components from the digital transmit signal; a multi-rate adaptive filter that transforms the set of signal components into a digital self-interference cancellation signal, according to a transform configuration, to form an interference-reduced receive signal; and a transform adaptor that dynamically sets the transform configuration in response to changes in the interference-reduced receive signal.
120 Citations
24 Claims
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1. A system for multi-rate digital self-interference cancellation comprising:
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a signal component generation system coupled to a digital transmit signal of a communication system that generates a set of signal components from the digital transmit signal, wherein the signal component generation system comprises a first transform path and a second transform path;
the first transform path having a component generator of order one, and the second transform path having a component generator of order three;
wherein the set of signal components comprises a first signal component of order one and a second signal component of order three;a multi-rate adaptive filter that transforms the set of signal components into a digital self-interference cancellation signal according to a transform configuration, wherein the digital self-interference cancellation signal is combined with a receive signal of the communication system to form an interference-reduced receive signal; and a transform adaptor that dynamically sets the transform configuration in response to changes in the interference-reduced receive signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method for multi-rate digital self-interference cancellation comprising:
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receiving a digital transmit signal of a communication system; generating a set of signal components, the set of signal components comprising a first signal component of order one and a second signal component of order three, from the digital transmit signal; transforming the set of signal components into a digital self-interference cancellation signal according to a transform configuration; combining the digital self-interference cancellation signal with a receive signal of the communication system to form an interference-reduced receive signal; and dynamically adapting the transform configuration in response to changes in the interference-reduced receive signal. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24)
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Specification