IEIE Transactions on Smart Processing and Computing

대한전자공학회 (The Institute of Electronics and Information Engineers)
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A New In-band Full-duplex SIC Scheme Using a Phase Rotator

  • Lee, Haesoon (School of Electrical and Electronic Engineering, Yonsei University) ;
  • Kim, Dongkyu (School of Electrical and Electronic Engineering, Yonsei University) ;
  • Kim, Jinmin (Advanced Communication Technology R&D Lab, LG electronics) ;
  • Hong, Daesik (School of Electrical and Electronic Engineering, Yonsei University)
  • 투고 : 2013.12.20
  • 심사 : 2014.05.12
  • 발행 : 2014.08.31
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초록

How well the self-interference cancellation (SIC) technique performs is a primary issue in realizing an in-band full-duplex (FD) wireless communication system. One factor affecting its performance is channel estimation error on the self-interference channel. We propose a new analog SIC scheme which is robust to channel estimation error. It uses phase rotators in the radio frequency (RF) chain. We also derive closed-form equations for the residual self-interference of the proposed and the conventional schemes. The analytical and numerical results show that the residual self-interference under the proposed SIC scheme is less than that using the conventional scheme, even though channel estimation error is present.

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참고문헌

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