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Orthogonal frequency division multiplexing (OFDM), which was used in earlier Wi-Fi versions, has been replaced by OFDMA. It breaks up the Wi-Fi channel into smaller frequency chunks known as resource units.
By dividing the channel, concurrent transmissions of smaller frames to numerous users take place at the same time. A conventional 20 MHz channel, for instance, could be divided into as many as nine smaller channels. A Wi-Fi 6 AP might send smaller frames to nine Wi-Fi 6 clients at once using OFDMA.
The Global OFDMA-Enhanced Wi-Fi Chips market accounted for $XX Billion in 2022 and is anticipated to reach $XX Billion by 2030, registering a CAGR of XX% from 2023 to 2030.
Wi-Fi 802.11ax chipset family was launched by Broadcom. The bigger channels (160 MHz), higher-order modulation (1024 QAM), and support for four streams of 802.11ax will contribute significantly to the speed increase.
However, uplink and downlink OFDMA (scheduling) in 802.11ax may be its most crucial component because it will enable this new generation of Wi-Fi to function similarly to cellular networks. Wi-Fi data transmissions will be quicker and considerably more spectrum efficient with the elimination of on-air packet collisions thanks to OFDMA.
This feature guarantees that 802.11ax will deliver significantly better Wi-Fi, especially in areas with a high user and device density.
The power-saving “Target Wake Time” function, which puts devices to sleep when they aren’t transmitting data, is one of several characteristics that make up Broadcom’s 802.11ax products.
Improved Wi-Fi coverage due to a rise in the amount of usable radio signal that Wi-Fi devices can actually receive is another direct advantage of OFDMA. The outdoor Wi-Fi in cities or on campuses will probably benefit greatly from wider coverage.
Wi-Fi should become much more appealing to carriers trying to provide users with low-cost data services as a result of the coverage and quality enhancements brought forth by 802.11ax. Qualcomm and Quantenna are two additional companies that now make chipsets that support 802.11ax.
In comparison to existing Wi-Fi using the 802.11ac standard, Broadcom claims that their 802.11ax solution will significantly improve Wi-Fi quality, speed, and efficiency: four times faster download, six times faster upload, four times better coverage, and seven times longer battery life.
