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* " Beamforming Narrowband and Broadband Signals " by John E. Piper in Sonar Systems, InTech, Sept. 2011
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Beamforming and by
* " A Primer on Digital Beamforming " by Toby Haynes, March 26, 1998
Beamforming is the method used to create the radiation pattern of the antenna array by adding constructively the phases of the signals in the direction of the targets / mobiles desired, and nulling the pattern of the targets / mobiles that are undesired / interfering targets.
Beamforming and .
Beamforming or spatial filtering is a signal processing technique used in sensor arrays for directional signal transmission or reception.
Beamforming can be used at both the transmitting and receiving ends in order to achieve spatial selectivity.
Beamforming can be used for radio or sound waves.
Beamforming can be computationally intensive.
Beamforming techniques used in cellular phone standards have advanced through the generations to make use of more complex systems to achieve higher density cells, with higher throughput.
Beamforming can be used to try to extract sound sources in a room, such as multiple speakers in the cocktail party problem.
Smart antennas have two main functions: DOA estimation and Beamforming.
Narrowband and Broadband
In UVB Phototherapy the exposure time is very short ( 1-2 minutes with Broadband UVB lamps and 5-15 minutes with Narrowband UVB lamps ).
Narrowband and by
EIA / TIA / IS-3 was superseded by EIA / TIA-553 and TIA interim standard IS-91 ( Narrowband Advanced Mobile Phone System ).
Narrowband RF ( radio frequency ) channels with low power and long wavelengths ( i. e., low frequency ) are affected primarily by flat fading, and PPM is better suited than M-FSK to be used in these scenarios.
This standard won over Motorola's Narrowband AMPS or N-AMPS, an analog scheme that increased capacity by cutting down voice channels from 30 kHz to 10 kHz.
Narrowband and .
* Mixed-excitation linear prediction ( MELP ), MIL STD 3005, 2400 bit / s, used in the Future Narrowband Digital Terminal FNBDT, NSA's 21st century secure telephone.
Narrowband ultraviolet B ( UVB ) phototherapy is now used more commonly than PUVA as it is less damaging to the skin.
Narrowband receivers may use similar techniques, but are limited due to the different resolution capabilities of narrowband systems.
Narrowband power line communications began soon after electrical power supply became widespread.
Narrowband can also be used with the audio spectrum to describe sounds which occupy a narrow range of frequencies.
One percent of the population suffer from Vitiligo, and Narrowband UVB Phototherapy is an effective treatment.
Narrowband UVB lamps, 311-313 nanometer is the most common treatment.
File: NGC281NBHunterWilson. jpg | NGC 281-Amateur Narrowband Image ( = Red, H-alpha = Green,
* Future Narrowband Digital Terminal ( FNBDT )-Now referred to as the " Secure Communications Interoperability Protocol " ( SCIP ), the FNBDT is a replacement for the wide-band STE, which uses narrow-bandwidth communications channels like cellular telephone circuits, rather than ISDN lines.
SCIP derived from the US Government FNBDT ( Future Narrowband Digital Terminal ) project after the US offered to share details of FNBDT with a number of other nations in 2003.
Narrowband interference usually arises from intentional transmissions such as radio and TV stations, pager transmitters, cell phones, etc.
Broadband and by
Broadband Internet is achieved over coaxial cable by using cable modems to convert the network data into a type of digital signal that can be transferred over coaxial cable.
* I-cable Broadband Cable Broadband of speeds up to 130M / 10M shared by one tower ( tens of apartments ).
* Sure ( Mobiles only, Broadband and Home Phone is operated by Manx Telecom landlines )
Number of Broadband Users by Access ( April 2005 )
Number of Broadband Users by Access ( June 2004 )
Number of Broadband Users by Access ( June 2002 )
Broadband internet access with unlimited international traffic is rarely offered by ISPs to the market at significantly higher price.
The federal government's National Broadband Network agenda, as well as industry changes driven by mass adoption of the internet, are imposing further structural changes upon the company.
Broadband connections grew by nearly 80 % in 2004.
* Cell Broadband Engine, a multi-core general purpose CPU developed jointly by Sony, Toshiba and IBM.
Broadband access is serviced primarily by City Broadband ( Ethernet Broadband-Over-Fibreoptic ), TMnet, MyKris, NTT MSC ( formerly ARCnet ) and recently Air Broadband which has announced its test pilot plans in Cyberjaya for Wimax.
Broadband by satellite service is available from Wild Blue and HughesNet.
Broadband systems usually use a different radio frequency modulated by the data signal for each band.
High-speed data access is provided by Wi-Fi and Mobile Broadband.
However, with the advent of higher " Tiers of Service " of 10 Mbit / s downstream and higher, plus the reducing cost of NTL's cable modems ( supplied by Ambit Broadband ) NTL now supplies all subscribers with cable modems.
In ETSI the standards are defined by the BRAN project ( Broadband Radio Access Networks ).
While the consumer service offered by CBB officially ended December 31, 2006 at midnight, Connexion's government contracts for the same service to U. S. Government planes continue under the new name of Boeing Broadband Satcom Network ( BBSN ) and likely will for the next several years.
This was followed by Toucan, and the customer base of Bulldog Broadband
This enterprise is owned by Sing Tao News Corporation Limited, a firm owning other businesses including media publications, human capital management and Broadband service.
In April 2008, after a change of the Federal Government from Liberal Party of Australia coalition parties to Australian Labor Party coalitions, the new government terminated the funding agreement and the project was halted, with its functions to be replaced by the National Broadband Network.
Founded in 1989 by University of Pittsburgh student David E. Schwencke, Full Service Network is a Western Pennsylvania facility based Competitive Local Exchange Carrier ( CLEC ) providing services which include High Speed Internet and Broadband Phone Service.
It ceased operation in October 2001, but its bankrupt assets and contracts were bought by Voicestream Wireless and by February 2002, was operating as T-Mobile Broadband.
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