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Title
Digitally-intensive transceivers for future mobile communicationsemerging trends and challenges
AuthorKanumalli, Ram Sunil ; Buckel, Tobias ; Preyler, Peter ; Preissl, Christoph ; Gebhard, Andreas ; Motz, Christian ; Markovic, Jovan ; Hamidovic, Damir ; Hager, Ehrentraud ; Pretl, Harald ; Springer, Andreas ; Huemer, Mario
Published in
e & i Elektrotechnik und Informationstechnik, 2018, Vol. 135, Issue 1, page 30-39
PublishedSpringer Vienna, 2018
LanguageEnglish
Document typeJournal Article
Keywords (EN)RF / mobile communications / wireless communications / signal processing / interference cancellation / carrier aggregation
ISSN1613-7620
URNurn:nbn:at:at-ubl:3-1032 Persistent Identifier (URN)
DOI10.1007/s00502-017-0576-1 
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 The work is publicly available
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Digitally-intensive transceivers for future mobile communicationsemerging trends and challenges [1.38 mb]
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Abstract (English)

This article presents an overview of the major trends and challenges involved with the design of multi-band, multi-standard digitally-intensive radio frequency transceivers for next generation mobile communications. In addition, we discuss in detail one aspect of the implementation challenges, namely the occurrence and cancellation of self-interference especially in carrier aggregation modes. For that, we present a novel digital cancellation technique to jointly compensate the self-interference caused by transmit (Tx) modulated spurs and Tx second order intermodulation distortion products (IMD2) in the receiver. This architecture exploits the underlying relation between both types of interference and offers a low-complexity solution to mitigate the Tx-IMD2 interference. Simulation results show, that the proposed technique significantly suppresses both types of interference and restores the signal-to-noise ratio of the wanted signal within 0.3 dB from its value in the absence of interference, thereby achieving 30 dB of cancellation.

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CC-BY-License (4.0)Creative Commons Attribution 4.0 International License