International Conference on Computing, Networking and Communications 2018

The paper entitled “an O-QPSK modem using an FSK RF front end for IEEE 802.15. 4 operation providing Maximum-Likelihood data”, by
Moritz Schrey, Markus Scholl, Tobias Saalfeld, Jan Henning Mueller, Vahid Bonehi, Christoph Beyerstedt, Fabian Speicher, and Stefan Heinen, has been included in the proceedings of the 2018 International Conference on Computing, Networking and Communications (ICNC).

This paper deals with wireless sensor networks, which in the field of Industry 4.0 and the Internet of Things, are often used to achieve fine-grained control and a high degree of detailed information about processes and systems. However, different communication standards exist. Instead of having to choose one of them, a multistandard platform could “just work”. Instead of implementing the most important standards independently and next to one another, research needs to be done on how to efficiently implement multiple standards and modulation techniques with the least amount of complexity, implementation effort and chip area. This includes keeping specialties off chip and instead realizing them within flexible driver software. In this work, a low gate-count IEEE 802.15.4-compliant modulator and Maximum-Likelihood demodulator design implemented in a standard 0.13μm CMOS process for an FSK-capable RF front end is presented. Ease of integration into existing wireless transceiver ASICs is shown via an example. The modulator and demodulator modules enable an existing three band, multi-standard low power wireless transceiver with FSK modulation capability to operate as a full IEEE 802.15.4 compatible device. This makes the chosen approach ideal for wireless sensor networks with stringent power constraints and proves the add-on nature of the proposed architecture.