In a test of four IEEE 802.11n end-user systems, a system design based on Metalink's WLANPlus chipset swept the field, delivering between 29 and 50 Mb/s data rates when operating in the 5-GHz band and 57 to 62 Mb/s in the 2.4-GHz band.
Testing was conducted by The Tolly Group and sponsored by Metalink. Results were gathered from five points in a large home (6,000 sq ft) with normal residential environmental conditions such as walls and appliances.
Metalink supplied the test team with a system built from a reference design while the other systems in the test were available in the retail market. The Tolly Group used the latest software upgrades from the other chip vendors. In each case, the antenna configurations were the same: three transmitting antennas and two receiving antennas.
A Metalink spokesman said that since it is a recent entry into the 802.11n chipset market there are no retail products available with its MtW8171/MtW8151 chip set.
The bill-of-materials costs would be comparable, he said, when it is taken into account that the Metalink chip set offers dual-mode (2.4 GHz and 5 GHz) operation and requires an additional power amplifier and other components.
In the 2.4 GHz test, the other systems delivered between 41 and 9 Mb/s throughput depending on the location in the house. The 5 GHz test was less revealing because one of the competing systems does not support that band.
The test team also measured packet loss in 5-GHz operationa useful metric for high quality video transmissionand found that Metalink's chipset significantly outperformed the competition.
The other systems tested (chip vendor in parenthesis) were: Apple AirPort Extreme Base Station/AirPort Extreme Card (Atheros chipset); Buffalo WZRAG300NH AP/WLICBAG300N Adapter (Marvell chipset); and Linksys WRT300N AP/WPC300N Adapter (Broadcom chipset)
The Tolly Group's complete report is available at http://www.tolly.com/DocDetail.aspx?DocNumber=207215.
More information on Metalink products is available at http://www.wirelessnetdesignline.com/products/201201046.