HDTV and the Internet, the demand for satellite spot beams "

It was about one hundred years ago, since Marconi invented the radio (1902). In 1930 many houses were in the United States and Europe, an AM radio receiver. The world has moved a bit in the 20 Century changes. Courier 1B (Philco), the first active communications satellite, was launched in 1960 to life. We faced the challenges of communication. High Definition Television (HDTV), the bandwidth much more important for transmission, with the current demand for hundreds of call inTelevision and the growth of Internet communications, leading to a lack of communication bandwidth. A tool used to solve this problem, satellite spot beams. In 2010, 60% of TV receivers use a satellite signal by 15% in 2002.

What are spot beams per satellite?

Until recently transferred, signal, satellite communications through a very wide. The same signal that was recorded in California from the same source as the signal, which was incorporatedNew York. Satellites are not "spot beams" to send a signal over very large areas, the transmission of data across the USA.

Spot beams are different. It is focused like a spotlight on a region of the country. A typical spot beams has a radius of only 50-100 miles. Depending on where you are in the country, you do not see the beam if you are in focus. With this tool, the same spectrum of materials from different sources can be used in different regions. Furthermore,The system is flexible enough to increase power transmission specific when necessary to compensate for local weather forecasts. Spot beams technology for video transmission require extremely high bit rates such as HDTV capable.

DirecTV and DISH Network has one of the first to be used on-site bar. The transmission channels of local television is ideal for a signal carried on a domain is the ideal solution for the application. Spot beams technology is applied to the new satelliteKa-band (Ka-band is 19-30 GHz). There are several Ka-band satellites in use that do not do with the spot beams: Advanced Communication Technology System (NASA, USA), Superbird and N-STAR (Japan), HOT BIRD 6 (Eutelsat, France), DFS Kopernikus (Germany), and Italsat (Italy), but more recently, satellite spot beams use of advanced technologies.

Built Anik F2 (Boeing and operated by Telesat Canada) launched July 17, 2004, and became operational on 1 October. He is currently the largestCommunication satellites to 157 meters long and 27 meters wide. Anik F2 provides Internet service, distance learning, telemedicine and the United States and Canada. Anik F2 has 45 transponders, it sends signals with broadband spot beams. A third spot beams offer broadband services in Canada. The remainder will be used to provide U.S. Internet Service

Spot beams HDTV

HDTV uses narrow beams of DirecTV and DISH Network (Ka band) are also closerthe Ku-band spot beams for standard-definition TV used. If you live more than 50 miles from the center of the signal into a populated area, it is possible that you will not be able to receive HDTV on spot beams. DirecTV and DISH Network have the technical capabilities to transmit a signal, spot beams to especially since the new satellites will operate at a higher power. It is a good business sense for them is to maximize coverage, but there are compromises.

In a rural state like New –Mexico, it is logical that spot beams covering a 200 miles radius, because there are more participants, which can be translated into more revenue. In New England, it is sometimes useful, the signal is more restrictive, as the spot beams are focused to be more densely packed together. However, since different frequencies are used for the local bar next to overlap can be controlled in general.

Satellites spot beams and Communication Way

According to Northern Sky Research, there are 15 million U.S. –Households without access to broadband Internet services. Satellite spot beams operated by WildBlue and Telesat have already reached more than 300,000 Internet subscribers since its introduction in 2005.

One advantage of the Ka-band is a dish that no longer has much to offer very good performance. Spot beams with Ka-band is more effective than traditional C or Ku-band satellite (the technology used by other systems, satellite communication). The service is capable of significant improvementsPerformance. A Ka-band satellite can be as many as the increase in the capacity of 8X on Ku-band satellites. The technology can provide the transmission speed as fast as 16 Mbps and faster download speeds of up to 30 Mbps. Three satellites with Ka-band spot beams technology are already in use in North America, Telesat Canada, Anik F2, WildBlue WildBlue Communications, 1, and Hughes Network Systems Spaceway 3rd

ViaSat-1 Ka-Sat: Satellite Communications on Steroids

A North FourthAmerican satellite, ViaSat-1 (or another satellite Telesat Canada) is scheduled for launch in 2011. This system is very advanced Ka-band to broadband satellite ordered by ViaSat. The amount of bandwidth enabled by ViaSat-1, with "ViaSat SurfBeam" system of networking features unprecedented. The total flow is designed so that more than 100 gigabits per second or more capacity than the current fleet in North America two-way Ka-, C-and Ku-band combined capacity. In the year 2010, one Ka-SatSatellite offer similar services in Europe.

HDTV signals require 4-5 times more bandwidth for the transmission of signals in standard definition, with advanced MPEG-4 encoding. In addition, the communications requirements of our Internet bandwidth continues to grow at about 50% per year. Stay in touch with the application a number of options it is necessary to support on-site and the satellite (Ka band) will be very important in the mix.

Related posts:

1. The wiring must have Internet HDTV Before the Internet revolution, the buildings, usually two wiring...
2. Internet Speed TV HD – The Ultimate Experience Internet TV Internet TV is HD speed give a flavor quite...
3. HDTV Satellite Receivers Compared Satellite HDTV (High Definition Television) is fashionable these days,...
4. Verizon FiOS TV HD – Get HDTV, telephone and Internet service with Verizon FiOS Triple Play of One way to maximize your monthly budget, is going...
5. VIZIO XVT423SV 42-Inch Full HD 1080p LED LCD HDTV with VIA Internet Application, Black Review Customer Reviews VIZIO XVT423SV 42-Inch Full HD 1080p LED...