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New Technology Could Fundamentally Change Future Wireless Communications

By ­niversity of Bristol News

May 22, 2015

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University of Bristol researchers say they have developed a technique that can estimate and cancel out the interference from a transmission, enabling a radio device to simultaneously transmit and receive data on the same channel.

The technology requires only one channel for two-way communication, using half as much spectrum compared to conventional technology, a breakthrough the researchers say could fundamentally change radio design and increase data rates and network capacity, reduce power consumption, create less-expensive devices, and enable global roaming.

The full-duplex transceiver architecture combines electrical balance isolation and active radio frequency cancellation to suppress interference by a factor of more than 100 million. In addition, the system uses low-cost, small-form-factor technologies, making it well suited for use on mobile devices.

"Since the radio spectrum is a limited resource, and with network operators paying billions of pounds to access the spectrum, solving this problem would bring us one step closer to the faster, cheaper, and greener devices of our connected future," says Bristol researcher Leo Laughlin.

The technology could be applied to Wi-Fi systems, cellular systems, and radio circuitry.

From University of Bristol News
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