Air-Induced Passive Intermodulation in FDD Networks: Modeling, Cancellation and Measurements

Vesa Lampu, Lauri Anttila, Matias Turunen, Marko Fleischer, Jan Hellmann, Mikko Valkama

Tutkimustuotos: Conference contributionScientificvertaisarvioitu

4 Lataukset (Pure)

Abstrakti

In this paper, we consider the effects of air-induced passive intermodulation (PIM) in frequency division duplexing (FDD) transceiver systems. Specifically, we are focusing on the issue in multiantenna frequency range 1 (FR-1) base station (BS) systems. The air-induced PIM is a special case of intermodulation distortion, which stems from metallic objects within the radiation pattern of the transceiver system, due to so-called "rusty bolt" effect, where the induced nonlinear distortion is reflected back to the receiver. In order to cancel the received PIM, we develop a model for the perceived interference at the receiver of the BS and utilize the model to produce an estimate of the PIM signal, and to suppress it from the received data. To verify the proposed air-PIM modeling and cancellation scheme, extensive experimentation is carried out with an FDD capable transceiver system at NR band n3. The experiments show great promise in the achievable PIM cancellation levels, as the received air-induced PIM can be suppressed by more than 20 dB with the developed digital cancellation solution.
AlkuperäiskieliEnglanti
Otsikko2021 55th Asilomar Conference on Signals, Systems, and Computers
KustantajaIEEE
Sivut983-988
ISBN (elektroninen)978-1-6654-5828-3
ISBN (painettu)978-1-6654-5829-0
DOI - pysyväislinkit
TilaJulkaistu - 2022
OKM-julkaisutyyppiA4 Artikkeli konferenssijulkaisussa
TapahtumaAsilomar Conference on Signals, Systems, and Computers - Pacific Grove, Yhdysvallat
Kesto: 31 lokak. 20213 marrask. 2021

Julkaisusarja

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

Conference

ConferenceAsilomar Conference on Signals, Systems, and Computers
Maa/AlueYhdysvallat
KaupunkiPacific Grove
Ajanjakso31/10/213/11/21

Julkaisufoorumi-taso

  • Jufo-taso 1

Sormenjälki

Sukella tutkimusaiheisiin 'Air-Induced Passive Intermodulation in FDD Networks: Modeling, Cancellation and Measurements'. Ne muodostavat yhdessä ainutlaatuisen sormenjäljen.

Siteeraa tätä