Self-interference channel estimation system and method
First Claim
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1. A method for characterizing a self-interference channel of a transceiver, the method comprising:
- transmitting a transmission signal including a message signal and a swept tone that changes frequency from below an upper edge to above a lower edge of a reception band of a receiver;
determining, at an infinite impulse response (IIR) filter of the receiver, an infinite impulse response of a self-interference channel based upon the swept tone; and
characterizing the self-interference channel based upon the infinite impulse response,wherein the transmitting step includes up-converting, at a transmitter, an injected fixed tone and the swept tone centered around a central frequency of the reception band.
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Abstract
The present application describes a self-interference channel estimation system. The system includes a signal generator configured to generate a swept tone having a frequency ranging from an upper edge of a reception band to a lower edge of the reception band, and configured to generate a message signal. The system includes an infinite impulse response (IIR) filter configured to determine an infinite impulse response of a self-interference channel based upon the swept tone. The system includes a processor configured to characterize the self-interference channel based upon the infinite impulse response.
130 Citations
14 Claims
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1. A method for characterizing a self-interference channel of a transceiver, the method comprising:
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transmitting a transmission signal including a message signal and a swept tone that changes frequency from below an upper edge to above a lower edge of a reception band of a receiver; determining, at an infinite impulse response (IIR) filter of the receiver, an infinite impulse response of a self-interference channel based upon the swept tone; and characterizing the self-interference channel based upon the infinite impulse response, wherein the transmitting step includes up-converting, at a transmitter, an injected fixed tone and the swept tone centered around a central frequency of the reception band. - View Dependent Claims (2, 3, 4, 5)
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6. A self-interference channel estimation system, comprising:
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a signal generator configured to generate a swept tone having a frequency ranging from an upper edge of a reception band to a lower edge of the reception band, and configured to generate a message signal; an infinite impulse response (IIR) filter configured to determine an infinite impulse response of a self-interference channel based upon the swept tone; a processor configured to characterize the self-interference channel based upon the infinite impulse response; and a transmitter including a combiner configured to up convert the swept tone and the message signal to a radio frequency signal centered about a center frequency of the reception band. - View Dependent Claims (7, 8, 9, 10, 11)
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12. A non-transitory computer-readable medium including computer executable instructions, which when executed by a processor causes the processor to:
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transmit, from a transmitter, a transmission signal including a message signal and a swept tone that changes frequency from below an upper edge to above a lower edge of a reception band of a receiver; determine, at an infinite impulse response (IIR) filter of the receiver, an infinite impulse response of a self-interference channel based upon the swept tone; characterize the self-interference channel between the transmitter and the receiver, based upon the infinite impulse response, wherein the transmitter and the receiver are part of a wireless handset or a base station. - View Dependent Claims (13, 14)
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Specification