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Need Information Carrier in Carrier

(Read 2021 times)
Tagor Muda Dalimunthe
Ex Member


Jun 7th, 2013 at 3:28am  
Dear All
Need the simple illustration or description of carrier in carrier technology.
Best Regards
tagor muda dalimunthe
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Eric Johnston
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Reply #1 - Jun 7th, 2013 at 9:34am  
Carrier in Carrier refers to a Comtech technique for making use of satellite bandwidth by transmitting two carriers on top of one another, like so:
...
Provided each earth station is in the same coverage beam and can therefore see its own transmitted signal, it is able to subtract a delayed version of its own transmit carrier from the received carriers and thus remove the 'interference'.

I've heard of the very successful use of this technique on a point to point link between a pair of large earth stations, with whole transponders being fully utilised, twice over !

Read full explanation here:
http://www.comtechefdata.com/files/articles_papers/WP-Doubletalk%20Carrier-in-Ca...
( From where the above spectrum analyser images are reproduced. )

Best regards, Eric.
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« Last Edit: Jun 8th, 2013 at 4:28pm by Admin1 »  
 
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USN - Retired
Ex Member


Reply #2 - Jun 7th, 2013 at 12:30pm  
First I've heard of Carrier in Carrier (CiC?). Sounds to me like just another name for CDMA, which has been around for over 50 years.

//greg//
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fluffymassive
Ex Member


Reply #3 - Feb 18th, 2014 at 5:11am  
I can confirm that it is very good to use.

Would also save a lot of $$$ in bandwidth.
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