OFDM-Based mmWave Wi-Fi ISAC System Implementation for Monostatic Human Sensing

This work presents an Orthogonal Frequency Division Multiplexing (OFDM)-based millimeter wave (mmWave) Wi-Fi Integrated Sensing and Communication (ISAC) system that directly implements the mandatory waveform requirements of the IEEE 802.11 Integrated Millimeter Wave (IMMW) Study Group. Designed for monostatic human sensing at 60 GHz, the system integrates a four-stage static removal algorithm, adaptive twodimensional Constant False Alarm Rate (2D-CFAR) detection, and the range-Doppler processing. It enables dual-functionality sensing and communication without additional spectrum or hardware, supporting IMMW standardization. Numerical validation achieves 0.2563 m range Root Mean Square Error (RMSE) and 0.0798 m/s velocity RMSE at 20 dB Signal-to-Noise Ratio (SNR), with superior Bit Error Rate (BER) performance over Single Carrier (SC) baselines—demonstrating practical feasibility for next-generation IMMW-compliant Wi-Fi systems.