High-Order PSK Signaling (HOPS) Techniques for Low-Power Spread Spectrum Communications
Alan J. Michaels · 2018
The emergence of wireless networks consisting of large quantities of internet of things (IoT) devices has created the need for low-power multiple access communications protocols. The protocols employed for many of the current generation IoT devices are employing existing commercial standards, which often are optimized for very different purposes. In particular, the capability to simultaneously support low power operations and security is a challenge, indicative by the many compromises made in the adaptation of commercial protocols to IoT. This paper describes high order phase shift keying (PSK) signaling (HOPS) spread spectrum waveform techniques that echo secure military communications in many ways, yet are optimized for deployment in security-oriented battery-powered applications like industrial IoT, tire pressure monitoring systems (TPMS), and the emerging Wireless Avionics Intra-Communications (WAIC) standards. The paper presents results primarily through gate-level simulation models constructed in Simulink's HDL Coder toolbox, backed by hardware measurements on Altera Cyclone V SX SoC and Arria 10 SoC FPGAs.