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Mark,
I think this is a very good document that you have put together.  I have a 
few minor comments on it that you may want to consider.
p.2, section on NOISE. This sounds a little negative.  Maybe we should say 
"Typical bit error rates for a satellite link today are better than 1 in 
10^7.  I   Also, I think we should indicate that advanced error control 
coding (e.g. Reed Solomon) is being used today, it is not only for new 
systems?
p.3 BANDWIDTH - I think we should explain what a transponder is, even if 
only in simple terms such as a satellite based radio repeater?
p.3 para 3 explain why broadcast capability is good - e.g very well suited 
to multicast applications.
p.4 para 1 Transmission errors Second sentence; "TCP interprets all packet 
drops as signals of congestion..."
                                                Third sentence; "Packets dropped due to corruption do not necessarily 
indicate that the network is congested"
p.4 end of section 2 maybe a summary table would be good comparing GEO, MEO, 
LEO characteristics and appropriate mitigation strategies?
p.5 end of 3.1 Path MTU Discovery
"...Path MTU Discovery is not that expensive time consuming"?
I hope these comments help.
Cheers 
Matt
[email protected]
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