wireless fundamentals 02



 

What are the performance differences between 802.11g and 802.11a?
Performance is made of multiple parameters, including:
– Maximum data rate is similar for 802.11a and 802.11g products, using the same OFDM modulation. However, when an 802.11g product is supporting backward compatibility with 802.11b products, the 802.11g network aggregate throughput available for actual data transport will be substantially lower.
– Maximum range is somewhat longer for 802.11g products due to the lower “path-loss” in the 2.4GHz band, compared to the 5GHz band, used for 802.11a products.
– System capacity: 802.11a products offer more channels than 802.11g products, and have the potential to offer higher system capacity.
It should also be noted that these parameters are subject to specific implementation by the different vendors.
Why should I buy Wi-Fi CERTIFIED 802.11n draft 2.0 products?
802.11n is a breakthrough technology that enables Wi-Fi networks to do more, faster, and over a larger area.   802.11n Wi-Fi provides the best connection available for computer networking and home entertainment applications alike – delivering the range, bandwidth, and performance today’s multimedia applications and products demand. Key features of Wi-Fi CERTIFIED 802.11n draft 2.0 products include:
A strong Wi-Fi signal that can blanket the entire home
Support for more devices connecting together on a single network without sacrificing bandwidth
Use many devices and applications without sacrificing connection performance
Plenty of bandwidth to move high-definition video and audio streams from device to device throughout the home
The best user experience while using Wi-Fi devices for with voice calls, video games, and other multimedia applications
Back up large files in a snap
Confidence that devices from different  manufacturers will work together
Tested for latest security features
Configured with “good neighbor” protocol