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Bluetooth 2.1+ EDR combo IC improves Wi-Fi co-existence

Posted: 22 Dec 2009     Print Version  Bookmark and Share

Keywords:802.11n  Bluetooth  Wi-Fi 

Ralink Tech. 1x1 802.11n plus Bluetooth combo (RT3090BC4) is now Bluetooth 2.1 + EDR-qualified as determined by the Bluetooth Qualification Board (BQB). Designed for notebooks, netbooks and high-volume consumer PC platforms, the RT3090BC4 promises an unprecedented level of intelligent coexistence between Wi-Fi and Bluetooth.

With support for the Bluetooth 2.1 + EDR functionality, the RT3090BC4 simplifies the set-up of mobile phones and other Bluetooth products. It also extends the range of Bluetooth and improves co-existence with Wi-Fi. Moreover, the RT3090BC4 delivers significantly lower cost and power than discrete Wi-Fi and Bluetooth products, with an optimised bill of materials, a simplified design, and integrated manufacturing and testing procedures.

The growing popularity of slim, ultramobile PCs has sparked demand for highly-integrated, co-located wireless solutions. To ensure optimal radio coexistence between WLAN and Bluetooth, the RT3090BC4 combo solution incorporates a sophisticated coexistence algorithm that ensures improved harmony between co-located WLAN and Bluetooth radios. It dynamically adjusts WLAN and Bluetooth transmissions to reduce interference, and it responds automatically to the presence and operating characteristics of nearby Wi-Fi Access Points. This result in 80 per cent faster WLAN throughput, compared to competing WLAN plus Bluetooth combo devices.

The RT3090BC4 is a highly-integrated solution that eliminates redundant components that are required for discrete 802.11n and Bluetooth modules, including antennas, connectors, PCBs, cables, and radio shielding. It delivers more than 10 per cent cost savings over competing WLAN plus Bluetooth combo products. PC OEMs also benefit from reduced manufacturing costs achieved through easier assembly, faster testing, and simpler inventory control.

The RT3090BC4 supports the final 802.11n standard as well as Bluetooth 3.0 + HS, the bleeding-edge version of Bluetooth which was announced earlier this year. The solution incorporates support for Motorola's consumer-friendly user interface and 22 Bluetooth profiles, including high-performance multimedia capabilities such as stereo audio, video streaming, and rapid digital photo transfers for personal area network applications.

"Ralink's Wi-Fi solutions are featured in millions of desktop and portable PCs worldwide, as well as the entire ecosystem of WLAN products including retail networking devices," said Horen Chen, president, Ralink. "The RT3090BC4 WLAN/Bluetooth combo solution enables manufacturers to quickly move into the new 802.11n + Bluetooth combo era and increase revenues."

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