2021/11/15 by Yousef Mafi, Mafi, Yousef, Fakhreddin Amirhosseini +9
Engineering · #Advanced MIMO Systems Optimization #Energy Harvesting in Wireless Networks #FOS: Electrical engineering #IoT Networks and Protocols #Signal Processing (eess.SP) #electronic engineering #information engineering
paper · pdf · doi:10.48550/arxiv.2111.07607
openalex publication_date 2021/11/15 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Providing energy-efficient Internet of Things (IoT) connectivity has\nattracted significant attention in fifth-generation (5G) wireless networks and\nbeyond. A potential solution for realizing a long-lasting network of IoT\ndevices is to equip each IoT device with a wake-up receiver (WuR) to have\nalways-accessible devices instead of always-on devices. WuRs typically comprise\na radio frequency demodulator, sequence decoder, and digital address decoder\nand are provided with a unique authentication address in the network. Although\nthe literature on efficient demodulators is mature, it lacks research on fast,\nlow-power, and reliable address decoders. As this module continuously monitors\nthe received ambient energy for potential paging of the device, its\ncontribution to WuR's power consumption is crucial. Motivated by this need, a\nlow-power, reliable address decoder is developed in this paper. We further\ninvestigate the integration of WuR in low-power uplink/downlink communications\nand, using system-level energy analysis; we characterize operation regions in\nwhich WuR can contribute significantly to energy saving. The device-level\nenergy analysis confirms the superior performance of our decoder. The results\nshow that the proposed decoder significantly outperforms the state-of-the-art\nwith a power consumption of 60 nW, at cost of compromising a negligible\nincrease in decoding delay.\n