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To: Harvey Rosenkrantz who wrote (13779)	8/14/1998 11:19:00 PM
From: Maurice Winn	Read Replies (1) \| Respond to of 152472

I heard Irwin J, Andrew V, Klein G and Q.com invented CDMA.*EOM* "Everyone is the father of success, but failure is an orphan". What about that joker Fourier who invented sorting out combined wave functions using Fourier Analysis. Orthogonal at that! What about talking? You know, all coded signals together jumbled into the air and we decipher from the morass of frequencies just the bits we want to hear and then translate it into the English words or whatever language we are listening for using our intracranial processor. Heck, we can even decipher the voices from 5 people speaking simultaneously in the same language thanks to their different voice codes. Including power control! Tell a speaker to talk louder if interference is getting high from those GSM yobbos over in the corner. We even have rake receivers - using echo to boost intelligibility. Love that old resonance! So it seems Code Division Multiple Access has been around for quite a while. Why, even crickets, frogs and cicadas chirp loudly in a cacophony of CDMA sound. Judging from how many of them there are, it works just fine. How about that *EOM? Instead of putting LBM for 'Long Boring Message', just put EOM* and nobody has to bother reading it! Cool... Mqurice 17 days and notice Q.com heading up again. Nobody is going to want to be accused of serial and parallel stupidity by Paul Klugman and then appear on a later edition of Fortune as "The Man Who Caused the Deflation Crash!" So it looks as though his self-denying prophecy might work. Good trick. New paradigm rulz ok...

To: Harvey Rosenkrantz who wrote (13779)	8/15/1998 5:11:00 PM
From: Bernard Levy	Respond to of 152472

Hello Harvey and others: The Handbook of Spread-Spectrum Communications published by Marvin Simon and 3 coauthors goes in great detail over the early developments of spread spectrum communication. Heddy Lamar was awarded a patent for what was essentially a frequency hopped (FH) spread spectrum system. As documented in the above mentioned book, this patent was largely undeserved, since the FH idea was already present in systems dating back to the 1930s. The press loves to play up this angle, but true spread spectrum systems were not really developed until the 1950s. Finally, CDMA is just a version of direct sequence (DS) spread spectrum, which was around for many years before QCOM even saw the light of day. QCOM's patents are for very specific implementation details, not for DS in general. Probably the key invention for DS spread-spectrum was the Rake receiver invented by Paul Green, who later turned his attention to optical communications, and became one of the most influential trend setters in optical networking. Best regards, Bernard Levy