1024-QAM Evolution of the modulation techniques we are using today with 802.11ax (256-QAM). With 1024-QAM, we are now able to encode 10 bits per cycle on each subcarrier. The way we are able to do that is by increasing the number of different levels...
There are multiple functions in which a client or AP can gain access to the channel. What we’re going to discuss is in addition to the HCF and DCF. TXOP duration-based RTS/CTSIntra-BSS or inter-BSS frame determinationSRG PPDU determinationTwo NAVsMU...
Objectives of TWT Objectifs of 802.11ax Increase the performance of the Wi-Fi network by a factor of 4 while improving or not impacting power requirementsProvide power saving mechanisms for new emerging IoT devices All the current power saving...
With OFDMA in 802.11ax, the size of the subcarriers has been divided by 4. Going from 312.5KHz wide with OFDM to 78.125KHz wide. The symbol duration has been increased by 4 times in the meantime. Going from 3.2 microseconds with OFDM to 12.8...
Why is there a need for BSS Coloring? To help a receiving device identify the BSS from which a receiving PPDU originates from so that there’s a reduction in BSS collision reporting a busy medium. 802.11ax allows the medium to be reused more...
802.11ax (Wi-Fi 6) brings OFDMA to wireless. It’s an enhancement over OFDM which was a single-user transmission. When a signal is sent or received it is done with one device. In OFDMA, it allows multiple access which means simultaneous...