Efficient Fast-Convolution Implementation of Filtered CP-OFDM Waveform Processing for 5G

Markku Renfors, Juha Yli-Kaakinen, Toni Levanen, Mikko Valkama, Tero Ihalainen, Jaakko Vihriälä

    Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

    32 Citations (Scopus)
    87 Downloads (Pure)

    Abstract

    © 2015 IEEE.This paper investigates the use of effective and flexible fast-convolution (FC) filtering scheme for multiplexing OFDM resource blocks (RBs) in a spectrally well-localized manner. The scheme is able to effectively suppress interference leakage between adjacent RBs, thus supporting asynchronous operation and independent waveform parametrization of RBs. This is considered as an important feature in 5G waveform development for effectively supporting diversified service characteristics. Our approach is applicable for cyclic prefix or zero prefix based OFDM and the corresponding OFDM based singlecarrier (SC-FDMA) waveforms. It is also possible to generate and process traditional Nyquist pulse shaping based single-carrier waveforms and filter bank multicarrier waveforms using the same FC processing engine, accommodating different waveforms simultaneously in different RBs. Our case study is based on proposed numerology for 5G cm-wave communications utilizing flexible time-division duplexing principle. While using RBs of 160 OFDM subcarriers, it is enough to deactivate 3 to 5 subcarriers out of each RB as guardbands to effectively suppress interference leakage between RBs.
    Original languageEnglish
    Title of host publicationProceedings of IEEE Global Communications Conference (IEEE GLOBECOM 2015)
    DOIs
    Publication statusPublished - 2015
    Publication typeA4 Article in conference proceedings
    EventIEEE Global Communications Conference -
    Duration: 1 Jan 1900 → …

    Conference

    ConferenceIEEE Global Communications Conference
    Period1/01/00 → …

    Publication forum classification

    • Publication forum level 1

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