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Electrical and Computer Engineering
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Houston Chapter IEEE Circuits and Systems Society

Speaker: Lauri Anttila
Tampere University of Technology

Nonlinear Self-Interference Cancellation in Full-Duplex Transceivers

Friday, November 8, 2013
10:00 AM  to 11:00 AM

1049  George R. Brown Hall
Rice University
6100 Main St
Houston, Texas, USA

he inherent nonlinearities of the transmitter and receiver front-ends have recently been shown to limit self-interference (SI) cancellation capability in full-duplex (FD) transceivers. So far, mitigation of these effects has received little attention in the FD literature. This talk introduces a digital nonlinear interference cancellation technique to cancel the power amplifier (PA) induced nonlinear SI in a FD transceiver. The technique is based on modeling the nonlinear SI channel, which is comprised of the nonlinear PA, the linear multipath SI channel, and the RF SI cancellation, with a parallel Hammerstein nonlinearity. The results illustrate that compared to existing linear SI cancellation methods, the proposed technique enables using higher transmit powers with a given PA and IIP3 ?gure. Alternatively, for a given maximum transmit power level, a lower-quality PA (i.e., lower IIP3) can be used.

Host: Ashutosh Sabharwal

Biography of Lauri Anttila:
Lauri Anttila received the M.Sc. degree in 2004 and the D.Sc. (Tech) degree (with honors) in 2011, both from the Tampere University of Technology (TUT), Tampere, Finland. Currently, he is a post-doctoral research fellow at the Department of Electronics and Communications Engineering at TUT. He has published more than 30 articles in international journals and conference proceedings, as well as written 2 book chapters. His research interests include communications signal processing, digital front-end signal processing, RF impairment analysis and mitigation, and full-duplex communications.

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