High sensitivity wake-up radio using spreading codes

design, evaluation, and applications

Wen Chan Shih*, Raja Jurdak, Bih Hwang Lee, David Abbott

*Corresponding author for this work

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Most of the published wake-up radios propose low energy design at the expense of reduced radio range, which means that they require an increased deployment density of sensor networks. In this article, we introduce a design of a high sensitivity 916.5 MHz wake-up radio using low data rate and forward error correction (FEC). It improves the sensitivity, up to -122 dBm at a data rate 370 bit/s. It achieves up to 13 dB of coding gain with symbol error rate (SER) 10-2, and up to 4 times the range of the data radio, rendering it more suitable to sensor networks. Our design can receive wake-up signal reliably from any IEEE 802.15.4 transmitter and achieves a low packet error rate (PER) 0.0159 at SNR 4 dB. Furthermore, our design encodes the node ID into a wake-up signal to avoid waking up the undesired nodes.

Original languageEnglish
Article number26
Pages (from-to)1-14
Number of pages14
JournalEurasip Journal on Wireless Communications and Networking
Volume2011
Issue number1
DOIs
Publication statusPublished - 1 Dec 2011
Externally publishedYes

Keywords

  • Forward error correction (FEC)
  • Wake-up radio
  • Wireless sensor network applications

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