Sunnyvale, CAAtheros Communications, Inc. introduced the AR5005VL wireless chipset that employs multiple-radio, smart-antenna technologies to deliver multiple-input, multiple-output (MIMO performance and industry-leading throughput to standard 802.11 WLAN products. The AR5005VL chipset uses phased array beamforming, cyclic delay diversity, and optimal receive combining and is compatible with Wi-Fi products.
The chipset is designed to boost performance when on both ends of a wireless link (multiple input and multiple output), on the transmit side only (multiple output), or on the receive side only (multiple input). It is available in 802.11g and 802.11a/g versions, supporting configurations with up to four antennas.
The AR5005VL delivers up to 50 Mb/s of actual user throughput when operating on both sides of the wireless connection. In mixed networks with a wide range of different 802.11g products, the chipset supports 27 Mb/s of user throughput across a 3000-square-foot home. In contrast, other MIMO products deliver less than 18 Mbps of user throughput when communicating with non-MIMO devices and fall back to a diversity-only mode that only uses just one antenna at a time.
Supporting up to four antennas, the chipset uses multiple radio outputs to focus a coherent 802.11a/g signal towards the receiver, combining the techniques of phased array beamforming and cyclic delay diversity in a way that is fully compatible with existing WLAN radios. The chipset also uses advanced signal processing techniques to combine multiple 802.11a/g radio inputs to improve overall signal strength and quality.
The 802.11a/g version of the AR5005VL chipset costs under $23 in 10,000-unit quantities. The 802.11g version costs under $20. The chipsets are in volume production now.
b>Atheros Communications, Inc. 408-773-5200