[WEBINAR] The New Normal: Dealing with the Reality of an Unsecure World

IEEE 802.11a

Definition - What does IEEE 802.11a mean?

IEEE 802.11a is an amendment to the 802.11 standard for wireless LANs. It is of of the specifications that is more commonly known as Wi-Fi.

802.11a uses radio frequencies in the 5 GHz band and supports theoretical throughput of up to 54 Mbps. The standard uses the same base protocol as the original 802.11 standard, but uses orthogonal frequency-division multiplexing (OFDM).

Also known as IEEE 802.11a-1999.

Techopedia explains IEEE 802.11a

The first IEEE standard for Wi-Fi was released in 1997 and is known as IEEE 802.11. It had major shortcomings in that the maximum throughput was 2 Mbps. By 1999, two amendments were made to the original standard. 802.11a operated in the 5 GHz band and used OFDM, while 802.11b was still in the 2.4 GHz band and used DSSS.

Despite being superior in many ways, 802.11a never achieved the level of commercial success as 802.11b due to price. 802.11.b was cheaper, and got adopted as the de facto standard. It's more common in recent days to see tri-mode wireless routers with 802.11n and 802.11b/g. 802.11a isn't obsolete per se, it's just another example of how the business side of technology trumps performance.

Techopedia Deals

Connect with us

Techopedia on Linkedin
Techopedia on Linkedin
"Techopedia" on Twitter

Sign up for Techopedia's Free Newsletter!

Email Newsletter

Join thousands of others with our weekly newsletter

Free Whitepaper: The Path to Hybrid Cloud
Free Whitepaper: The Path to Hybrid Cloud:
The Path to Hybrid Cloud: Intelligent Bursting To Amazon Web Services & Microsoft Azure
Free E-Book: Public Cloud Guide
Free E-Book: Public Cloud Guide:
This white paper is for leaders of Operations, Engineering, or Infrastructure teams who are creating or executing an IT roadmap.
Free Tool: Virtual Health Monitor
Free Tool: Virtual Health Monitor:
Virtual Health Monitor is a free virtualization monitoring and reporting tool for VMware, Hyper-V, RHEV, and XenServer environments.
Free 30 Day Trial – Turbonomic
Free 30 Day Trial – Turbonomic:
Turbonomic delivers an autonomic platform where virtual and cloud environments self-manage in real-time to assure application performance.