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Analog Cancellation for Full-Duplex Wireless in Multipath Self-Interference Channels Jong-Ho LEE Ji-won CHOI Jae-Hoon JUNG Seong-Cheol KIM Yong-Hwa KIM Publication IEICE TRANSACTIONS on Communications Vol.E98-B No.4 pp.646-652 Publication Date: 2015/04/01 Online ISSN: 1745-1345 DOI: 10.1587/transcom.E98.B.646 Type of Manuscript: PAPER Category: Wireless Communication Technologies Keyword: full-duplex, interference cancellation, multipath, orthogonal frequency-division multiplexing (OFDM), Full Text: PDF(1.6MB)>>
Summary: 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 self-interference signals. Numerical results are presented to verify the suppression performance of the proposed scheme. | |||||
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