Adaptive Cancellation of Nonlinear Self-Interference in Wireless Full-Duplex: Cascaded Spline-Interpolated Methods

Pablo Pascual Campo, Lauri Anttila, Dani Korpi, Mikko Valkama

Tutkimustuotos: KonferenssiartikkeliScientificvertaisarvioitu

1 Sitaatiot (Scopus)
7 Lataukset (Pure)

Abstrakti

This article studies advanced digital self-interference (SI) cancellation algorithms for wireless full-duplex (FD) transceivers. While the majority of works in this area consider linear SI models and corresponding cancellation algorithms, we take also both the transmitter (TX) and receiver (RX) nonlinearities into account. Specifically, we develop a Hammerstein-Wiener type of digital SI cancellation system where the two involved nonlinearities are efficiently implemented through spline-interpolated look-up tables (LUTs). Also, adaptive parameter estimation solutions are pursued and discussed, and comprehensive cancellation performance examples and processing complexity comparisons are provided. The obtained results show that taking both the TX and RX nonlinearities into account in the digital cancellation stage can be beneficial, particularly when the TX power amplifier is operating close to saturation and when the RF isolation and RF cancellation prior to the RX low-noise amplifier (LNA) is limited, such that also the LNA is distorting the SI waveform.

AlkuperäiskieliEnglanti
OtsikkoConference Record of the 54th Asilomar Conference on Signals, Systems and Computers, ACSSC 2020
ToimittajatMichael B. Matthews
KustantajaIEEE
Sivut1265-1271
Sivumäärä7
ISBN (elektroninen)9780738131269
ISBN (painettu)9781665447072
DOI - pysyväislinkit
TilaJulkaistu - 2020
OKM-julkaisutyyppiA4 Artikkeli konferenssijulkaisussa
TapahtumaAsilomar Conference on Signals, Systems and Computers - Pacific Grove, Yhdysvallat
Kesto: 1 marrask. 20205 marrask. 2020

Julkaisusarja

NimiAsilomar Conference on Signals, Systems, and Computers proceedings
ISSN (painettu)1058-6393
ISSN (elektroninen)2576-2303

Conference

ConferenceAsilomar Conference on Signals, Systems and Computers
Maa/AlueYhdysvallat
KaupunkiPacific Grove
Ajanjakso1/11/205/11/20

Julkaisufoorumi-taso

  • Jufo-taso 1

!!ASJC Scopus subject areas

  • Signal Processing
  • Computer Networks and Communications

Sormenjälki

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