Partial On-Off Keying - A Simple Means to Further Improve IoT Performance

Power consumption is expected to be a key performance indicator for ultra-low power IoT devices. A disruptive step towards achieving years of battery life is the introduction of wake-up radios (WURs). The use of a WUR allows the main radio to be turned off, and only woken up when a wake-up packet is received. A commonly used modulation for the wake-up packet is on-off keying (OOK) which can be demodulated using a simple envelope detector. In this paper we introduce partial-OOK (P-OOK), a modification of OOK that can be used to improve the sensitivity performance of a WUR without increasing the complexity.