Wi-Fi 802.11n has been finalised finally by IEEE and now the Wi-fi alliance is certifying the wi-fi enabled products in a different way.
The updated Wi-Fi CERTIFIED n program maintains the requirements of the draft 2.0 program (previously followed) and adds testing for some new optional features, including:
• Test support for simultaneous transmission of up to three spatial streams
• Packet aggregation (A-MPDU), to make data transfers more efficient
• Space-time Block Coding (STBC), a multiple-antenna encoding technique to improve reliability in some environments
• Channel coexistence measures for "good neighbor" behavior when using 40 MHz operation in the 2.4 GHz band
The Wi-Fi CERTIFIED n logo program has been updated to support a wide range of devices tuned for varying performance criteria. In addition to removing the term "draft" from the logo, devices with particular feature sets may now use taglines in conjunction with the logo.
Devices can now be designated "Wi-Fi CERTIFIED dual-stream n" or "Wi-Fi CERTIFIED multi-stream n" to indicate that they have passed tests for specific performance-enhancing features.
Tags:- Wi-fi, new, logo, certification, IEEE, finalised, specs
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