WiFi-6 or 802.11ax is the next generation of WiFi Technology. It is expected to make a huge difference in the way people and more importantly IoT devices access the network. One of the major differences between the current generation and the next generation is the use of OFDMA. 802.11a/g/n/ac uses orthogonal frequency division multiplexing while WiFi6 (802.11ax) uses Orthogonal frequency division multiple access (OFDMA). So what makes it unique?
Orthogonal frequency division multiple access is a multi-user version of the popular orthogonal frequency division multiplexing(OFDM) digital modulation scheme. Multiple access is achieved in OFDMA by assigning subsets of subcarriers to individual users. It allows the simultaneous low-data-rate transmission to several users. OFMDA helps WiFi6 to operate efficiently in high-density environments, serving several users simultaneously.