Analog Cancellation for Full-Duplex Wireless in Multipath Self-Interference Channels

作者:Lee Jong Ho; Choi Ji won; Jung Jae Hoon; Kim Seong Cheol; Kim Yong Hwa*
来源:IEICE TRANSACTIONS ON COMMUNICATIONS, 2015, E98B(4): 646-652.
DOI:10.1587/transcom.E98.B.646

摘要

In this paper, we propose an analog cancellation scheme for multipath self-interference channels in full-duplex wireless orthogonal frequency-division multiplexing (OFDM) systems. The conventional approaches emulate the radio-frequency (RF) self-interference signals by passing the RF transmit signals through delay lines and programmable attenuators. By contrast, our proposed scheme computes the phase-rotated and weighted versions of the baseband transmit signals in the baseband domain, which are simply upconverted to obtain the emulated RF selfinterference signals. Numerical results are presented to verify the suppression performance of the proposed scheme.

  • 出版日期2015-4