Interference-Free OFDM Embedding of Wake-Up Signals for Low-Power Wake-Up Receivers

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceeding


The use of ultra-low power wake-up receivers (WuRx) can significantly reduce idle listening energy cost. To tailor a WuRx scheme to orthogonal frequency division multiplexing (OFDM) based systems, such as LTE-MTC or IEEE 802.11, the wake-up signal (WUS) also needs to follow OFDM principles to avoid interfering with other transmissions in the same shared bandwidth. Here, we address this particular issue and propose an approach where the OFDM transmitter is modified to also transmit WUSs designed for non-coherent low-power WuRxs, on a subset of the carriers, thus embedding the WUS correctly and ensuring orthogonality. The approach is evaluated for different system parameters and its applicability across a wide range of OFDM-based systems is verified.


External organisations
  • Sony Mobile Communications AB
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Telecommunications
Original languageEnglish
Title of host publication2019 IEEE International Conference on Communications, ICC 2019 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781538680889
Publication statusPublished - 2019 May 1
Publication categoryResearch
EventIEEE International Conference on Communications (ICC) 2019 - Shaghai, China
Duration: 2019 May 202019 May 24


ConferenceIEEE International Conference on Communications (ICC) 2019
Abbreviated titleIEEE ICC 2019
Internet address