Relayed communication with versatile self-interference cancellation
First Claim
1. A method for providing self-interference cancellation in two-way relayed electromagnetic communication between a first device and a second device through a relay station, the first device being capable of transmitting a modulated near signal and receiving a composite signal containing a relayed version of the modulated near signal a relayed version of a modulated far signal transmitted from the second device, the method comprising the steps of:
- retrofitting existing equipment at the first device by adding a canceler module, wherein the existing equipment comprises a transmitter system and a receiver system;
providing a version of the modulated near signal as a first non-baseband interface signal from the transmitter system to the canceler module;
providing a version of the composite signal as a second non-baseband interface signal from the receiver system to the canceler module;
at the canceler module, generating a cancellation signal corresponding to the relayed version of the modulated near signal, using the first non-baseband interface signal and the second non-baseband interface signal;
at the canceler module, applying the cancellation signal to a version of the second non-baseband interface signal, to produce a cancellation-processed signal as a third non-baseband interface signal from the canceler module;
providing the cancellation-processed signal to the receiver system; and
wherein the canceler module generates a time-delayed and phase-rotated signal in producing the cancellation signal.
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0 Petitions
Accused Products
Abstract
Methods, apparatuses, and systems are presented for providing self-interference cancellation in two-way relayed electromagnetic communication between a first and a second device through a relay station, involving retrofitting existing equipment comprising a transmitter system and a receiver system at the first device by adding a canceler module, providing a version of a modulated near signal as a first non-baseband interface signal from the transmitter system to the canceler module, providing a version of a composite signal as a second non-baseband interface signal from the receiver system to the canceler module, generating a cancellation signal at the canceler module corresponding to a relayed version of the modulated near signal, using the first and the second non-baseband interface signals, applying the cancellation signal at the canceler module to a version of the second non-baseband interface signal, to produce a cancellation-processed signal as a third non-baseband interface signal provided to the receiver system.
97 Citations
18 Claims
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1. A method for providing self-interference cancellation in two-way relayed electromagnetic communication between a first device and a second device through a relay station, the first device being capable of transmitting a modulated near signal and receiving a composite signal containing a relayed version of the modulated near signal a relayed version of a modulated far signal transmitted from the second device, the method comprising the steps of:
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retrofitting existing equipment at the first device by adding a canceler module, wherein the existing equipment comprises a transmitter system and a receiver system; providing a version of the modulated near signal as a first non-baseband interface signal from the transmitter system to the canceler module; providing a version of the composite signal as a second non-baseband interface signal from the receiver system to the canceler module; at the canceler module, generating a cancellation signal corresponding to the relayed version of the modulated near signal, using the first non-baseband interface signal and the second non-baseband interface signal; at the canceler module, applying the cancellation signal to a version of the second non-baseband interface signal, to produce a cancellation-processed signal as a third non-baseband interface signal from the canceler module; providing the cancellation-processed signal to the receiver system; and wherein the canceler module generates a time-delayed and phase-rotated signal in producing the cancellation signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An apparatus for providing self-interference cancellation in two-way relayed electromagnetic communication between a first device and a second device through a relay station, the first device being capable of transmitting a modulated near signal and receiving a composite signal containing a relayed version of the modulated near signal a relayed version of a modulated far signal transmitted from the second device, the apparatus comprising:
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a canceler module capable of being added to existing equipment at the first device to retrofit the existing equipment, the existing equipment comprising a transmitter system and a receiver system; wherein the transmitter system is capable of providing a version of the modulated near signal as a first non-baseband interface signal to the canceler module; wherein the receiver system is capable of providing a version of the composite signal as a second non-baseband interface signal to the canceler module; wherein the canceler module is adapted to generate a cancellation signal corresponding to the relayed version of the modulated near signal, using the first non-baseband interface signal and the second non-baseband interface signal; wherein the canceler module is further adapted to apply the cancellation signal to a version of the second non-baseband interface signal, to produce a cancellation-processed signal as a third non-baseband interface signal from the canceler module; wherein the canceler module is capable of providing the cancellation-processed signal to the receiver system; and wherein the canceler module is adapted to generate a time-delayed and phase-rotated signal in producing the cancellation signal. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification