Analog Cancellation for Full-Duplex Wireless in Multipath Self-Interference Channels
- Authors
- Lee, Jong-Ho; Choi, Ji-won; Jung, Jae-Hoon; Kim, Seong-Cheol; Kim, Yong-Hwa
- Issue Date
- Apr-2015
- Publisher
- IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG
- Keywords
- full-duplex; interference cancellation; multipath; orthogonal frequency-division multiplexing (OFDM)
- Citation
- IEICE TRANSACTIONS ON COMMUNICATIONS, v.E98B, no.4, pp.646 - 652
- Journal Title
- IEICE TRANSACTIONS ON COMMUNICATIONS
- Volume
- E98B
- Number
- 4
- Start Page
- 646
- End Page
- 652
- URI
- http://scholarworks.bwise.kr/ssu/handle/2018.sw.ssu/39425
- DOI
- 10.1587/transcom.E98.B.646
- ISSN
- 0916-8516
- Abstract
- 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.
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