[C-12] Integrated Circuit and Devices

11:45 AM - 12:00 PM JST(2:45 AM - 3:00 AM UTC)

[C-12-10] Evaluation of Transmitted-Reference Signaling for 2.4-GHz Wake-Up Receivers under Wi-Fi OFDM Interference

〇Xinyu Tao¹, Kazutoshi Nishio¹, Ryota Toda¹, Shiro Dosho¹, Hiroyuki Ito¹ (1. Nano Sensing Research Unit, Institute of Integrated Research, Institute of Science Tokyo)

Keywords:

Wake-up Receiver,Transmitted-reference signaling,OFDM Interference,Signal-to-Interferer Ratio,Signal-to-Noise Ratio

This work evaluates transmitted-reference signaling for 2.4-GHz wake-up receivers under Wi-Fi OFDM interference. Unlike prior wake-up receiver architectures, transmitted-reference signaling aims to improve interference tolerance through the signaling scheme itself. An ideal receiver model in Simulink is used to compare two-tone and three-tone transmitted-reference signals under different signal-to-interferer ratio (SIR) conditions. The output SNR after down-conversion is evaluated using a 7-dB SNR requirement as the recovery criterion for BPSK demodulation. Simulation results show that the three-tone scheme achieves a higher output SNR than the two-tone scheme and satisfies the recovery criterion at SIR = −10 dB.