How Do XM and Sirius Satellite Radios Broadcast Multiple Stations?

In summary, XM and Sirius use different technology than traditional FM radio to broadcast their many channels. Each receiver is able to recover the entire 7.5 Mbps digital stream, which includes over 100 audio channels encoded at various bit rates. This allows for high fidelity sound reproduction.
  • #1
linux kid
101
0
this may be kind of dumb question but...

How do XM and Sirius broadcast so many stations? Isn't evey broadcaster given one frequency.
 
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  • #2
nobody has an answer?
 
  • #3
The technology used for microwave satellite digital data transmission is quite a bit different from that used for plain old analog FM radio.

Both satellite radio systems (XM and Sirius) actually use approximately 12 MHz of bandwidth to transmit a 7.5 Mbps digital stream. The entire stream, comprising 100+ channels of audio, is recovered by every receiver. The different audio chnanels are encoded at different bit rates, depending up the fidelity necessary for acceptable sound reproduction.

http://www.elecdesign.com/Articles/Print.cfm?AD=1&ArticleID=5603

- Warren
 
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Related to How Do XM and Sirius Satellite Radios Broadcast Multiple Stations?

1. What is satellite radio?

Satellite radio is a digital radio service that uses satellites to broadcast radio signals. Unlike traditional radio, which relies on terrestrial signals, satellite radio offers a wider range of channels and better audio quality.

2. How does satellite radio work?

Satellite radio works by transmitting radio signals from satellites in space to specialized receivers on the ground. These receivers then convert the signals into audio for listeners to hear.

3. What are the benefits of satellite radio?

Some benefits of satellite radio include a wider range of channels and genres, better audio quality, and the ability to listen to the same channels while traveling across different regions.

4. Is satellite radio free?

No, satellite radio is not free. It requires a subscription fee to access the channels and services. However, some satellite radio providers may offer free trials or promotions.

5. What is the difference between satellite radio and traditional radio?

The main difference between satellite radio and traditional radio is the method of transmission. Satellite radio uses satellites to transmit signals, while traditional radio relies on terrestrial signals. Additionally, satellite radio offers a wider range of channels and better audio quality.

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