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Out-of-band interference in 5G mmW multi-antenna transceivers : co-existence scenarios

Leinonen, Marko E.; Tervo, Nuutti; Kursu, Olli; Pärssinen, Aarno (2018-08-23)

 
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URL:
https://doi.org/10.1109/EuCNC.2018.8443252

Leinonen, Marko E.
Tervo, Nuutti
Kursu, Olli
Pärssinen, Aarno
Institute of Electrical and Electronics Engineers
23.08.2018

M. E. Leinonen, N. Tervo, O. Kursu and A. Pärssinen, "Out-of-Band Interference in 5G mmW Multi-Antenna Transceivers: Co-Existence Scenarios," 2018 European Conference on Networks and Communications (EuCNC), Ljubljana, Slovenia, 2018, pp. 1-9. doi: 10.1109/EuCNC.2018.8443252

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doi:https://doi.org/10.1109/EuCNC.2018.8443252
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Abstract

Large antenna arrays used for compensating the millimeter wave (mmW) path loss gives interesting perspectives for considering out-of-band emissions and reception signals to be direction dependent. In addition, co-existence of lower frequency and mm W systems set special requirements for both conventional cellular and mm W systems. This paper presents discussion on these two cases as the most important out-of-band interference scenarios in fifth generation systems. Effects of inter modulation and adjacent channel leakage are discussed in both mm W beamforming transceiver and receiver, respectively. It is concluded that distortion is behaving differently in multi-antenna transmitter that at the receiver. Over-the-Air (OTA) measured and simulated examples of the nonlinear behavior of an array are given for receiver and transmitter, respectively. Furthermore, smart array linearization scheme given as a reference provides new perspective to consider the direction dependent out-of-band distortion as a part of the future cellular standards.

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