NEW YORK-Responding to demand from carriers with heavy corporate users, Aperto Networks, Milpitas, Calif., said it has introduced commercially the PacketWave 600 Series Wireless Bridge to provide connectivity between locations up to 30 miles apart.
“Unlike conventional point-to-point systems on the market, our 6 MHz narrow channel utilization is three-to-four times more spectrally efficient than other systems,” said Alan Menezes, vice president of marketing.
“(This makes) PacketWave 600 less susceptible to interference and easier to collocate with other point-to-point and point-to-multipoint systems operating in the same band.”
The Wireless Bridge uses adaptive coding and modulation, automatic packet re-transmissions, adaptive packet size and 20 non-overlapping channels in 125 MHz of spectrum, Aperto said.
Carriers also can use PacketWave 600 to provision high-speed backhaul for Wi-Fi hot spot networks and as a higher-capacity alternative to leased T1/E1 connections, the company said.
Aperto has begun shipping the 5.8 GHz version, and it plans to ship later this quarter versions for the 3.5 GHz and 2.5 GHz frequency bands.
To increase the throughput and range of 802.11b access points and to reduce interference from garage door openers, fluorescent lights and other electronics that use the same spectrum, California Amplifier Inc., Camarillo, Calif., has developed a new antenna technology it calls Raster.
“This product is probably a year from commercial production because we need to develop a chip for high-volume production at a cost-competitive price,” said Richard Vitelle, chief financial officer, in a presentation Jan. 8 at the Needham & Co. Inc. “Growth Conference”.
Raster uses adaptive, digital, beam forming technology, which the military has integrated into Wi-Fi, he said.
“There are multiple antennas, multiple channels plus powerful digital signal processing to optimize the signal links to the user,” Vitelle said.
“It narrows the signal path to improve spectral efficiency and reduce interference . We expect to increase throughput by 50 percent better (than what is available now).”
