Software-defined radio prototype for fast-convolution-based filtered OFDM in 5G NR

Gokceli, Selahattin; Levanen, Toni; Yli-Kaakinen, Juha; Allen, Markus; Riihonen, Taneli; Palin, Arto; Renfors, Markku; Valkama, Mikko (2019)
 
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Gokceli, Selahattin
Levanen, Toni
Yli-Kaakinen, Juha
Allen, Markus
Riihonen, Taneli
Palin, Arto
Renfors, Markku
Valkama, Mikko
2019

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doi:10.1109/EuCNC.2019.8802008
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https://urn.fi/URN:NBN:fi:tuni-202001071075

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Peer reviewed
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In this work, we provide first-in-class measurement results for fast-convolution-based filtered orthogonal frequencydivision multiplexing (FC-F-OFDM) processing implemented on a universal software radio peripheral (USRP) software-defined radio (SDR). The fast-convolution-based processing offers a highly efficient and flexible filtered OFDM scheme allowing to achieve high spectral utilization in different channel bandwidths. Through the SDR implementation and transmitter spectrum emission measurements, we show that FC-F-OFDM allows to increase spectrum utilization compared to the fifth generation new radio (5G NR) Release-15 requirements. Furthermore, considering the out-of-band emission masks and adjacent-channel-leakage-ratio requirements, FC-F-OFDM provides a larger interference margin than well-known windowed overlap-and-add OFDM processing.
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