Globalstar Telecommunications Limited GSAT Message Board

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Microcap & Penny Stocks : Globalstar Telecommunications Limited GSAT

GSAT 50.53

+4.7%

Nov 7 9:30 AM EST

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To: CommSatMan who wrote (4273)	4/30/1999 11:48:00 PM
From: Clarksterh	Read Replies (3) of 29986

CommSatMan - A follow up to the issue of operation of G* in a building. Since G* is CDMA it has a further constraint that I* does not have. It must control its power. This is probably a non-issue when there is a direct line of sight to a spacecraft and the only fading is Ricean. However in a building, or in an metro alley, the signal path, even if strong enough, will be via multipath and will experience Rayleigh fading which is, of course, more extreme than Ricean. This could drop the signal below the other users, or drown out the other users since the time limit on the power control loop is pretty long. Perhaps you've discussed this before, but in any case I wouldn't count on reliable communication unless there is a direct line of sight, or at least one path that is consistantly significantly stronger than any of the other 'multipaths'. JMO Clark

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