Broadcasting Over Switched Single Beam Antennas
White Papers In switched single beam directional antenna model, broadcasting is achieved by sequentially steering the antenna beam across all pre-defined directions resulting in a sweeping delay. The paper thoroughly compares the performance of these protocols...
[August 23, 2007, 1:00]
Software Radio Architecture with Smart Antennas: A Tutorial on Algorithms and Complexity
White Papers Then, a joint beam forming and power control algorithm is implemented in a software radio smart antenna in a CDMA network. The concrete computational complexity and algorithm structure of a base station is considered in terms of a software radio...
[November 9, 2003, 23:49]
Ray's a laugh
Blog The device is a powerful transmitter hooked to a large dish antenna. Also, if the antenna's mangled, a lot of the power could go back down the pipe into the transmitter. They yelp with dismay, as well they might - the beam reportedly feels as if...
[January 26, 2007, 14:13]
Antenna to boost wireless security
News An optical antenna that uses a geometrically shaped lens promises to bring greater security to wireless networks for businesses, according to British scientists. But this new antenna is so precise, according to the researchers, that it can detect a...
[November 11, 2002, 16:12]
Broadband MIMO-OFDM Wireless Communications
White Papers This paper explores various physical layer research challenges in MIMO-OFDM system design, including physical channel measurements and modeling, analog beam forming techniques using adaptive antenna arrays, space-time techniques for MIMO-OFDM...
[November 2, 2004, 2:00]
MacDopplerPro X
Downloads MacDopplerPRO X will provide any level of station automation you need from assisted Doppler Tuning and Antenna Pointing right on up to fully automated Satellite Gateway operation. Full predictive dead spot crossing so that a pass is never...
[October 11, 2005, 8:00]
Start-up's tech offers home networking boost
News The product is composed of antenna arrays that generate hundreds of unique beam patterns. A new start-up says it has developed antenna technology that can steer signals around obstacles, improving reliability in wireless home networks.
[January 6, 2005, 8:35]
High-speed Wi-Fi raises early concerns
News The other example is that 802.11n has beam-forming capability — it has the antenna that can beam the radio frequency signal directly to the recipient. The new high-speed Wi-Fi standard, 802.11n, has been controversial to say the least.
[June 12, 2007, 11:17]
Schools alerted to mobile phone dangers
News Under its precautionary approach it simply recommends that "the beam of greatest intensity" from a base station's antenna should not fall on any part of the school grounds without agreement from staff and parents.
[July 28, 2000, 15:29]
60 GHz networking, the story so far
Blog If you put a mere 500 milliwatts into a 25dB gain antenna, you get an effective radiated power of nearly 160 watts. One an inch across could easily add 25dB of oomph, and beam the resultant very tightly focussed signal in just the right direction...
[October 22, 2007, 18:39]
New Wi-Fi challenges 3G
News The signals themselves can get so misdirected they actually interfere with each other as they find their way to a handset or cellular base station's antenna, said Jon Hambidge, senior director of marketing for IPWireless, one of the companies that...
[September 30, 2002, 7:50]
BT Tower preserved for posterity
News The other five buildings listed today are: Equatorial Telescopes, Herstmonceux, East Sussex; Lighthouse, Dungeness, Kent; British Telecom Earth/Satellite Station Antenna No.1, Goonhilly Downs, Cornwall; Radar Training Station, Fleetwood...
[March 27, 2003, 8:52]
