On 30/08/15 11:26, Karl Auer wrote: > ... Probably because compression costs CPU. Like any communications device, > a satellite is fastest when it can just ship stuff in and out. If it has > to process what it ships, it slows down. Also, CPU is energy, and a > satellite has limited energy. ...
As you say, the satellite has only to relay the data, so I would expect compression is done in the ground-stations. The NBN satellite service has separate options for compression of the packet headers and data payload. It is the headers which might be used in a satellite for routing, but NBN ISS has compression of headers turned ON by default and payload compression OFF. This is the opposite of what I would expect. -- Tom Worthington FACS CP, TomW Communications Pty Ltd. t: 0419496150 The Higher Education Whisperer http://blog.highereducationwhisperer.com/ PO Box 13, Belconnen ACT 2617, Australia http://www.tomw.net.au Liability limited by a scheme approved under Professional Standards Legislation Adjunct Senior Lecturer, Research School of Computer Science, Australian National University http://cs.anu.edu.au/courses/COMP7310/ _______________________________________________ Link mailing list Link@mailman.anu.edu.au http://mailman.anu.edu.au/mailman/listinfo/link
