The wireless rate (throughput) of a Wi-Fi AP is influenced by several factors. Below is an analysis of each option:
CPU performance : The AP's CPU processes data packets and manages wireless communication. Higher CPU performance enables faster packet processing and better throughput.
Spatial stream : Wi-Fi uses multiple spatial streams (MIMO) to transmit data simultaneously. More spatial streams increase the data rate and improve throughput.
Frequency bandwidth : The bandwidth of the frequency channel determines how much data can be transmitted at once. For example, 160 MHz channels provide higher throughput than 20 MHz channels.
SNR (Signal-to-Noise Ratio) : A higher SNR indicates a stronger signal relative to noise, resulting in better data transmission quality and higher throughput. Poor SNR leads to retransmissions and reduced performance.
All four factors significantly impact the wireless rate of a Wi-Fi AP.
References:
Huawei Wi-Fi 6 Technology White Paper, HCSA-Presales-IP Network Documentation.