Wi-Fi CSI

Wi-Fi CSI

Overview

Wi-Fi CSI (Channel State Information) is a technology that perceives environmental states by analyzing signal propagation variations during wireless transmission, enabling applications such as health monitoring, activity recognition, and intelligent security.

Realtek WiFi chips support capturing high-precision CSI data from multiple Wi-Fi packet types (e.g., data/management/control frames), including both unicast and broadcast communication modes. Combined with network topologies such as STA/SoftAP/hybrid networks, this enables highly adaptable scenario-specific solutions.

Advantages

Rich Configuration Interfaces

Channel information is obtained through standardized APIs and customizable configuration sets (such as subcarrier selection, sampling rate adjustment). It supports topologies like STA/SoftAP/hybrid networking, providing developers with highly flexible scenario-based solutions.

Non-Line-of-Sight Penetration

Capable of penetrating walls and furniture to detect activities in obscured scenarios (e.g., human presence through barriers).

Privacy Protection

Relies on analyzing wireless signal fluctuations instead of capturing images/videos, eliminating privacy risks associated with cameras.

Development Resources

	SDK Download	Link
	Wi-Fi CSI Development Guide	Link
	Contact Us	Link

Recommended ICs

Features	Filter	RTL872xD	RTL8721Dx	RTL8721F	RTL8720E	RTL8710E	RTL8726E	RTL8713E	RTL8730E	RTL8735B
Application Processor	Cortex-M Cortex-A	Cortex-M	Cortex-M	Cortex-M	Cortex-M	Cortex-M	Cortex-M	Cortex-M	Cortex-A	Cortex-M
DSP	Select
ISP?	Select
TrustZone	Select
Dual Band?	Select
Wi-Fi6	Select
R-MESH?	Select
Ultra-low power	Select
Ethernet	Select
BT Dual Mode	Select
HMI?	Select
Audio ADC?	Select
Audio DAC?	Select
USB	Select
BT Dedicated Antenna?	Select