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how big is the Samsung?
l=103 mmw=56.5mmside=12mm
How big is the Samsung genio?
l=103 mmw=56.5mmside=12mm
Bmw 318 i water in engine what happens?
The water in the engine of MMW I helps cool the engine of the vehicle.
Words for a feeling of stress?
anxietytensionnervousnesspressurehave butterflies in ones stomach
What is milliliter radio?
"Extremely High Frequency" (EHF) is the highest radio frequency band. It runs from 30 to 300 gigahertz and has a wavelength of ten to one millimeter, giving it the nickname millimeterwave or millimeter band (mmW/ML band).
What is ML band for a radio?
"Extremely High Frequency" (EHF) is the highest radio frequency band. It runs from 30 to 300 gigahertz and has a wavelength of ten to one millimeter, giving it the nickname millimeterwave or millimeter Band (mmW/ML Band).
Why is maria winkelmann kirch still known today?
Maria Winkelmann discovered a 'the comet of 1702' and was the first woman to discover a comet. She was a German astronomer that made many scientific contributions in her day though she was often rejected because she was a woman. Maria Winkelmann was also famous for some observations on the aurora borealis (northern lights) in 1707(http:/wwwzperiodzskyscriptzperiodzcozperiodzuk/footnotezperiodzhtml#mmw)
What is the collective name for group of people in a meeting?
Collective nouns are: a group of legislatorsa congress of representativesa board of directorsa board of trustees a meeting of administratorsa psalter of bishopsa bench of magistratesa decorum of deansa panel of expertsa dynasty of rulers
Improving communication routes of high altitude?
ABSTRACTBroadband wireless millimeter wavelength services provided from a High Altitude Long Operation (HALO™) Aircraft are now feasible. Our talk will emphasize the conceptual design of a "bandwidth-on-demand" wireless network whose data rates to and from the subscriber will measure in the multi-megabit per second range. A variety of metropolitan area spectrum bands offer the needed bandwidth. An attractive choice is the LMDS band near 28 GHz and system characteristics at this frequency will be described.The HALO™ Aircraft fuselage will house packet switching circuitry and fast digital network functions. The communications antenna and related components will be located in a pod suspended below the aircraft fuselage. To offer "ubiquitous" service throughout a large region, the HALO™ antenna will utilize multiple beams arranged in a typical cellular pattern. Broadband channels to subscribers in adjacent cells will be separated in frequency. As the beams traverse over a user location, the virtual path through the packet switch will be changed to perform a beam-to-beam handoff.Overviews of the system architecture and the network elements will be presented along with descriptions of the frequency plan and equipment. The utilization of components under development for terrestrial LMDS products will be described.Keywords: HALO™ Aircraft, HALO™ Network, Cone of Commerce™, broadband wireless services, metropolitan area network, switched broadband, megabit data services, packet switching, wireless multimedia1. BACKGROUND [Top of Page]1.1 IntroductionPassage of the 1996 Telecommunications Act and the slow growth of infrastructure for transacting multimedia messages (those integrating voice, text, sound, images, and video) have stimulated an intense race to deploy non-traditional infrastructure to serve businesses and consumers at affordable prices. The game is new and the playing field is more level than ever before. Opportunities exist for entrepreneurs to challenge the market dominance enjoyed for years by incumbents. New types of service providers will emerge.An electronic "information fabric" of a quilted character-including space, atmospheric, and terrestrial data communications layers-will emerge that promises to someday link every digital information device on the planet. Packet-switched data networks will meld with connection-oriented telephony networks. Communications infrastructures will be shared more efficiently among users to offer dramatic reductions in cost and large increases of effective data rates. An era of inexpensive bandwidth has begun which will transform the nature of commerce.The convergence of innovative technologies and manufacturing capabilities affecting aviation, millimeter wave wireless, and multi-media communications industries enables Angel Technologies Corporation and its partners to pursue new wireless broadband communications services. The HALO™ Network will offer ubiquitous access to any subscriber within a "super metropolitan area" from an aircraft operating at high altitude. The aircraft will serve as the hub of the HALO™ Network serving tens to hundreds of thousands of subscribers. Each subscriber will be able to communicate at multi-megabit per second data rates through a simple-to-install subscriber unit. The HALO™ Network will be steadily evolved at a pace with the emergence of data communications technology world-wide. The HALO™ Network will be a universal wireless communications network solution. It will be deployed globally on a city-by-city basis.The equipment needed to perform the functions of this broadband wireless service will be evolutionary in nature, not revolutionary. Most of the technology already exists. The engineering effort will be focused primarily at adapting and integrating the existing components and subsystems from terrestrial markets into a complete network solution. Proven technology will be used to the maximum extent. Since the HALO™ Aircraft are operated from regional airports, the equipment will be routinely maintained and calibrated. This also allows for equipment upgrades as technology advances yield lower cost and weight and provide increased performance.1.2 Wireless Broadband Communications MarketThere are various facts that show the strong interest in wireless communications in the United States:50 million subscribers to wireless telephone service28 million dollars annual revenue for wireless services38,000 cell sites with 37 billion dollars cumulative capital investment40% annual growth in customers25 million personal computers sold each year50 million PC users with Internet access"The demand for Internet services is exploding and this creates a strong demand for broadband, high data rate service. It is expected that there will soon be a worldwide demand for Internet service in the hundreds of millions". (Lou Gerstner, IBM, April 1997) The growth in use of the World Wide Web and electronic commerce will stimulate demand for broadband services.1.3 A Broadband Wireless Metropolitan Area NetworkHALO™ Aircraft Provides Wireless Broadband Services over Metropolitan CentersAn airplane specially designed for high altitude flight with a payload capacity of approximately one ton is being developed for commercial wireless services. It will circle at high altitudes for extended periods of time and it will serve as a stable platform from which broadband communications services will be offered. The High Altitude Long Operation (HALO™) Aircraft will maintain station at an altitude of 52 to 60 thousand feet by flying in a circle with a diameter of about 5 to 8 nautical miles. Three successive shifts on station of 8 hours each can provide continuous coverage of an area for 24 hours per day, 7 days per week. Such a system can provide broadband multimedia communications to the general public.One such platform will cover an area of approximately 2800 square miles encompassing a typical metropolitan area. A viewing angle of 20 degrees or higher will be chosen to facilitate good line-of-sight coverage at millimeter wave (MMW) frequencies (20 GHz or higher). Operation at MMW frequencies enables broadband systems to be realized, i.e., from spectrum bandwidths of 1 to 6 GHz. MMW systems also permit very narrow beamwidths to be realized with small aperture antennas. Furthermore, since the aircraft is above most of the earth's oxygen, links to satellite constellations can be implemented using the frequencies overlapping the 60 GHz absorption band for good immunity from ground-based interference and good isolation from inter-satellite links.The HALO™ Network can utilize a cellular pattern on the ground so that each cell uses one of four frequency sub-bands, each having a bandwidth up to 60 MHz each way. A fifth sub-band can be used for gateways (connections to the public network or dedicated users). Each cell will cover an area of a few square miles. The entire bandwidth will be reused many times to achieve total coverage throughout the 2800 square mile area served by the airborne platform. The total capacity of the network supported by a single airborne platform can be greater than 100 Gbps. This is comparable to terrestrial fiber-optic (FO) networks and can provide two-way broadband multimedia services normally available only via FO networks.The HALO™ Network provides an alternative to satellite- and ground-based systems. Unlike satellite systems, however, the airborne system concentrates all of the spectrum usage in certain geographic areas, which minimizes frequency coordination problems and permits sharing of frequency with ground-based systems. Enough power is available from the aircraft power generator to allow broadband data access from small user terminals.1.4 A New Layer in the Wireless InfrastructureRaytheon TI Systems and Angel Technologies Corporation have the opportunity to serve the growing wireless communications market by using a HALO™ Aircraft that transmits high-speed data traffic throughout a metropolitan region. The goal is to interconnect more than 100,000 subscribers within a metropolitan center and its surrounding communities through a star topology network. This HALO™ Network has the benefits of low cost, high flexibility, and high quality of service.HALO™ Aircraft provide a new layer in the traditional hierarchy of wireless communications. The HALO™ Network can be thought of as a "tall tower" approach that provides better line of sight to customers without the high cost of deploying and operating a satellite constellation.Terrestrial TowersHALO™ AircraftLow Earth Orbit (LEO) SatellitesGeostationary Earth Orbit (GEO) Satellites
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