2.4 GHz Wi-Fi refers to wireless local area network communication operating on the 2.4 gigahertz radio frequency band, commonly deployed using IEEE 802.11 standards, which serves as a primary hardware platform for CSI-based sensing due to its ubiquitous infrastructure presence in indoor environments. Its relatively long wavelength compared to 5 GHz alternatives enables deeper signal penetration through walls and obstacles, making it well-suited for passive indoor sensing tasks such as queue counting, occupancy detection, and radio propagation modeling. Key variants include 802.11b/g/n/ax channel configurations with differing bandwidths and subcarrier counts, which directly affect the granularity and richness of the CSI measurements available for sensing and modeling applications.
Source Papers
- CRPF-QC: An Efficient CSI Recurrence Plot-Based Framework for Queue Counting ↗ — CRPF-QC: An Efficient CSI Recurrence Plot-Based Framework fo
- WiSegRT: Dataset for Site-Specific Indoor Radio Propagation Modeling with 3D Segmentation and Differentiable Ray-Tracing: (Invited Paper) ↗ — WiSegRT: Dataset for Site-Specific Indoor Radio Propagation