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Adaptive modulation with signalling vs. fixed modulation for WLAN systems

: Chen, Y.; Oswald, E.; Heidrich, M.

Informationstechnische Gesellschaft -ITG-:
European Wireless 2014. Proceedings CD-ROM : 20th European Wireless Conference. Centre Tecnològic de Telecomunicacions de Catalunya (CTTC), 14-16 May 2014, Barcelona, Spain
Berlin: VDE-Verlag, 2014
ISBN: 978-3-8007-3621-8
European Wireless Conference (EW) <20, 2014, Barcelona>
Conference Paper
Fraunhofer ESK ()

In industrial communications, especially in automation and control systems, data transmission shall be robust, of low-latency and energy-efficient. Adaptive modulation could be used to fulfill these requirements, where modulation schemes are adapted to current channel states. In this contribution, an orthogonal frequency division multiplexing (OFDM) based system with adaptive modulation is considered, where signalling is used to inform the receiver about the adapted modulation schemes. System performance in terms of frame error ratio (FER) is compared between fixed modulation and adaptive modulation with the proposed signalling schemes.