Simultaneous Transmit and Receive (STAR) system architecture using multiple analog cancellation layers

Simultaneous Transmit and Receive operation requires a high amount of transmit-to-receive isolation in order to avoid self-interference. This isolation is best achieved by utilizing multiple cancellation techniques. The combination of adaptive multiple-input multiple-output spatial cancellation with...

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Bibliographic Details
Main Authors: Kolodziej, Kenneth E., Perry, Bradley T., Herd, Jeffrey S.
Format: Conference Proceeding
Language:English
Subjects:
Adaptive systems
Antennas
Couplings
full-duplex wireless communication
Government
interference cancellation
multiaccess communication
simultaneous transmit and receive
STAR
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Summary:Simultaneous Transmit and Receive operation requires a high amount of transmit-to-receive isolation in order to avoid self-interference. This isolation is best achieved by utilizing multiple cancellation techniques. The combination of adaptive multiple-input multiple-output spatial cancellation with a high-isolation antenna and RF canceller produces a novel system architecture that focuses on cancellation in the analog domain before the receiver's low-noise amplifier. A prototype of this system has been implemented on a moving vehicle, and measurements have proven that this design is capable of providing more than 90 dB of total isolation in realistic multipath environments over a 30 MHz bandwidth centered at 2.45 GHz.
ISSN:0149-645X
2576-7216
DOI:10.1109/MWSYM.2015.7166972