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Detailed Explanation of WiFi 6 BSS Coloring Feature
In 802.11ax, also known as WiFi 6, a feature called BSS Coloring was introduced to optimize and resolve wireless interference issues among m…
Detailed Explanation of Wi-Fi 6 OFDMA Feature
OFDMA: Short for Orthogonal Frequency Division Multiple Access. OFDM vs OFDMA In Wi-Fi 4, Wi-Fi 5, and even the earlier 802.11a protocols pr…
Detailed Analysis of WiFi 6 Trigger Frame Structure
The implementation of OFDMA (Orthogonal Frequency Division Multiple Access) in WiFi 6 (802.11ax) relies on a critical mechanism called the T…
Thoughts on AI NVRs and Ingenic's AI NVR Platform A1
Ingenic's A1 series is an integrated solution tailored for the NVR market. Compared to traditional NVR solutions, its standout feature is th…
Summary of Learning on RF Circuit Components
This note provides a brief summary of the basic working principles and applications of various common component circuits in wireless radio f…
Correction to My Understanding of Dual-Band WiFi Antenna Multiplexing and a Comparison Between Duplexer and Diplexer
Previously, in another note of mine describing 2.4GHz and 5GHz dual-band WiFi sharing a single antenna for communication, based on my unders…
The Basics of Dipole Antennas and Antenna Gain
According to the book LTE Tutorial: Principles and Implementation: The half-wave dipole antenna is the most fundamental structural unit of a…
Working Principles and Application Summary of G-Sensor
G-Sensor: Gravity Sensor or Accelerometer. Its primary function is to detect sudden changes in an object's acceleration during motion. The m…
Detailed Explanation of the G.711 Audio Compression Standard
G.711 is an audio compression standard defined by the ITU-T, widely used in telecommunication networks and VoIP fields. In practical impleme…
Fundamental Phase Modulation Techniques: BPSK, QPSK, and DQPSK
Carrier modulation methods that manipulate phase, such as BPSK and QPSK, are widely used in wireless communications today. The lower-specifi…
Working Principle of IQ Modulation in Wireless Digital Communication
IQ modulation is the foundation of various high-order modulation schemes widely used in LTE and Wi-Fi, such as BPSK, QPSK, 16-QAM, 64-QAM, a…
How is the Antenna Shared Between Dual-Band WiFi and Bluetooth?
This note attempts to gain a more complete understanding of and answer the following three questions related to RF antenna multiplexing (sha…
Computation of Maximum Data Rates Across Different WiFi Standards
Below is a calculation and compilation of the theoretical maximum communication data rates supported by WiFi standards under various OFDM mo…
Summary of BLE Communication Security Modes and Security Levels
Definition of BLE Security Modes: In the application scenarios defined by the Bluetooth specification, security modes refer to the specific …
Detailed Analysis of BLE Device Pairing Modes and Processes
The BLE device pairing process primarily establishes a mutually trusted pairing and bonding relationship between two devices, generates keys…