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Wi-Fi Technologies: From the Origin to Wi-Fi 7

Wi-Fi has become an essential part of our daily lives, allowing us to access the Internet wirelessly from almost any point on the globe. Over the years, Wi-Fi technology has evolved through different generations, each bringing improvements in speed, range and reliability. This article explores different Wi-Fi technologies, from their beginnings to the revolution promised by Wi-Fi 7.

The First Generations: Wi-Fi 1 to Wi-Fi 4

- Wi-Fi 1 and 2 (802.11a/b) : The first standards, appearing in the late 90s, laid the foundations for Wi-Fi, offering speeds of up to 11 Mbps (802.11b) and 54 Mbps (802.11a).

- Wi-Fi 3 (802.11g) : Introduced in 2003, it improved the speed up to 54 Mbps while being compatible with previous standards.

- Wi-Fi 4 (802.11n) : Launched in 2009, it marked a significant milestone, supporting speeds up to 600 Mbps and introducing MIMO (Multiple Input, Multiple Output) technology to improve signal coverage and stability .

The Era of High Speed: Wi-Fi 5 and Wi-Fi 6

- Wi-Fi 5 (802.11ac) : Deployed in 2014, it dramatically increased speeds, reaching up to 3.46 Gbps, and improved efficiency in crowded spaces with MU-MIMO (Multi-User MIMO) technology. ).

- Wi-Fi 6 (802.11ax) : Introduced in 2019, it not only increased speeds up to 9.6 Gbps but also introduced significant improvements in energy efficiency and traffic management, optimizing user experience in high density areas.

#### Wi-Fi 7: The New Frontier

Wi-Fi 7 (802.11be) is the latest milestone in the evolution of Wi-Fi, promising to once again revolutionize the way we connect our devices. Here are the main advantages of this new technology:

- Extreme Speeds : Wi-Fi 7 aims to deliver maximum theoretical speeds of up to 30 Gbps, more than three times the maximum speed of Wi-Fi 6. This significant improvement will effortlessly manage bandwidth-intensive applications such as 8K video streaming, ultra-low latency online gaming, and augmented and virtual reality.

- Reduced Latency : Wi-Fi 7 significantly reduces latency, improving the experience of online games, video calls and real-time applications, thanks to the use of Multi-Link Operation (MLO) technology, which allows devices to transmit data on multiple frequency bands simultaneously.

- Better Traffic Management : With the introduction of 320 MHz channels and improved QAM (Quadrature Amplitude Modulation) technology, Wi-Fi 7 can manage data traffic more efficiently, improving connectivity in congested environments.

- Compatibility and Coexistence : Just like its predecessors, Wi-Fi 7 will be backward compatible with devices using previous Wi-Fi standards, ensuring a smooth transition to the new technology without making existing equipment obsolete.

In conclusion, Wi-Fi 7 is shaping up to be a major breakthrough in wireless networking, promising blazing speeds, near-zero latency, and improved traffic management. This new generation of Wi-Fi will have a profound impact not only on our homes and workplaces but also on future developments.


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