Comparison For DSL, Cable, Satellite, Or 4G - By: Paddy Chang

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Satellite Broadband:

Also newly introduced into the Broadband market, is WildBlue Satellite. This broadband service does not require a phone or cable line. WildBlue Satellite broadband service offers download/upload speeds starting at just $50 per month (512 kbps download speed with upload speed up to 128 kbps), or $80 per month (1.5 Mbps download speed and uploads up to 256 kbps). For those living in areas not well served by Cable Broadband and DSL, this is an attractive alternative. iNetVu offers a portable system for vehicles.

A very powerful new satellite, Viasat-1, will launch in 2011. This satellite will greatly improve the competitiveness of satellite in this field. ViaSat-1 has a total throughput capability of over 100 Gb/second, which is more capacity than the current American fleet of two-way C, Ka, and Ku band satellites combined. In 2010, a similar service will be launed in Europe by Ka-Sat.

Both WildBlue and ViaSat terminals use a networking technology that uses satellite bandwidth more efficiently, called DOCSIS (Data Over Cable Service Interface Specifications), lowering the cost of Internet service to consumers. The terminals include satellite modems and Ka band transceivers. DOCSIS has the ability to address "rain fade", a reduction in signal that is caused by heavy cloud cover, like during a thunderstorm. DOCSIS automatically responds to a reduced signal caused by atmospheric conditions with variable power control and data encoding techniques.

ViaSat-1 will offer more than a 10X increase in the capacity with frequency reuse by utilizing a technique called "SpotBeams" (WildBlue also uses SpotBeams). The high throughout of ViaSat-1 makes it ideal for transmitting new video applications requiring ultra high bit rates such as HDTV, HD digital cinema, and 3D TV. Spotbeams can be compared to a searchlight. SpotBeams focus a signal on an area 100 to 200 miles across. Thge same frequencies can be be reused many time, but for a different focus area.

WildBlue and ViaSat are geosynchronous satellites. A geosynchronous satellite remains above the same spot on the earth by orbiting at approximately 36,000 kilometers above the equator. Your signal must do a round-trip, and the minimum time for such a trip is about 1/4 second.

Satellite HDTV:

While HDTV local channels are more available on cable than satellite, DirecTV and the Dish Network each offer more national HDTV channels. DirecTV offers about 60 national HDTV channels and the Dish Network has about 50 HDTV channels. DirecTV and EchoStar plan additional satellites to offer at least 150 national HD channels, as well as local stations in HDTV.

"Satellite's going to be constrained not so much by how many channels they can carry than by how many they can get," Bob Scherman, Satellite Business News.

By 2010, it is projected that 60% of TV receivers will use a Satellite signal, up from 15% in 2002.

HDTV service is currently more fully served by the satellite TV companies like DirectV and Dish Network. New systems being implemented by Verizon, or perhaps a thorough retooling by local cable TV operators will offer the best competition.

The supply of HDTV and Broadband service in the U.S. is currently fragmented from the satellite industry. Both may be available from local retailers, but a unified system is lacking. This compares poorly to Europe and EutelSat, which will launch Ka-Sat in 2010 (Ka-Sat is very similar to ViaSat-1, discussed above), and install this satellite in a satellite "neighborhood", so that a single system will receive both the TV signals from their HotBird satellite system, and receive high performance broadband from Ka-Sat. This is unfortunate for U.S. consumers.

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