Over the past 20 years, Wi-Fi has evolved from 2 Mbps to over gigabit speeds, a 1000-fold increase in throughput. The standard has continuously advanced itself by introducing new protocols such as 802.11n, 802.11ac and now 802.11ax (Wi-Fi 6). The new standards support higher order of modulation schemes such as 64QAM, 256QAM and 1024QAM. These new standards also support transmission of multiple streams to a single client or multiple clients simultaneously. In addition to increasing peak data rates, efforts have been made to improve spectral efficiency which characterizes how well the system uses the available spectrum.
Multi-user techniques such as MU-MIMO and orthogonal frequency division multiple access (OFDMA) have been introduced to improve network efficiency and network capacity. Once Wi-Fi (802.11) standards have been released and implemented, the world began to transform as markets opened and new technology emerged. Each new standard is built on previous standard with improvement in speed and reliability. Read this whitepaper to know the complete evolution of WiFi.
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