Antenna/RF design and analog self-interference cancellation

Jong Woo Kwak, Min Soo Sim, In Woong Kang, Jaedon Park, Chan Byoung Chae

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

The main obstacle to full-duplex radios is self-interference (SI). To overcome SI, researchers have proposed several analog and digital domain self-interference cancellation (SIC) techniques. Digital cancellation has the following limitations: (1) It is only possible if the SI is sufficiently removed in the analog domain to fall within the dynamic range of an analog-to-digital converter (ADC). (2) It cannot mitigate the transmitter noise. Thus, analog cancellation plays an important role in a SIC scenario. This chapter provides an overview of current research activities on the analog cancellation scheme. Analog cancellation can be categorized into two classes-passive and active. In the passive analog cancellation, an RF component suppresses the SI. This can be implemented using a circulator or antenna separation. Leakages are cancelled by the active analog cancellation, which is based on a channel estimation of residual SI channel. The leakage from the passive cancellation can be matched by a signal generated from a tunable circuit or an auxiliary transmit chain. A key issue then in active analog cancellation is designing a circuit and optimization algorithm.

Original languageEnglish
Title of host publicationFull-Duplex Communications for Future Wireless Networks
PublisherSpringer Singapore
Pages39-60
Number of pages22
ISBN (Electronic)9789811529696
ISBN (Print)9789811529689
DOIs
Publication statusPublished - 2020 Jan 1

All Science Journal Classification (ASJC) codes

  • Computer Science(all)
  • Engineering(all)
  • Mathematics(all)

Fingerprint Dive into the research topics of 'Antenna/RF design and analog self-interference cancellation'. Together they form a unique fingerprint.

  • Cite this

    Kwak, J. W., Sim, M. S., Kang, I. W., Park, J., & Chae, C. B. (2020). Antenna/RF design and analog self-interference cancellation. In Full-Duplex Communications for Future Wireless Networks (pp. 39-60). Springer Singapore. https://doi.org/10.1007/978-981-15-2969-6_2