For fun:
Take Voyager spacecraft.
It is millions of miles away, with a tiny 22W transmitter built 45 years ago, has managed to send error free digital signal to earth from outer reaches of the solar system, in spite of cosmic rays, solar winds freely roaming space between itself and Earth, not to mention an atmosphere jam full of every kind of RFI !
How? did it use good cables ? NO.
It used a simple error correction code system (Reed-Solomon designed in early 1960's) similar to what Sony-Philips used in the design of humble CD.
Take Voyager spacecraft.
It is millions of miles away, with a tiny 22W transmitter built 45 years ago, has managed to send error free digital signal to earth from outer reaches of the solar system, in spite of cosmic rays, solar winds freely roaming space between itself and Earth, not to mention an atmosphere jam full of every kind of RFI !
How? did it use good cables ? NO.
It used a simple error correction code system (Reed-Solomon designed in early 1960's) similar to what Sony-Philips used in the design of humble CD.
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