Friday, March 02, 2007

Communications in the sky

Satellite communications are a lesser known means of telecommunication compared to fiber, DSL, wireless, etc. However their possibilities are quite wide. Their have a very broad reach, which makes them really suitable for broadcast applications like Satellite TV. For example, satellite TV is surviving and being profitable despite deploying costs are huge.

But what about transmitting personal communications? The problem is that in this case the capacity is limited because it depends on the number of total communications, while broadcasting uses a fixed bandwidth to transmit data in the downlink. At the same time it requires big power to be transmitted by the handsets… Actually attempts of creating mobile operators through satellites sunk. Now let’s fly with our imagination and think in a future with colonies in Mars and other planets… Then satellites could be the ‘fiber’ that interconnects the world nowadays. Hundreds of satellites deployed in the space acting as repeaters to link planets one to another, does it sound sci-fi?

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