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To: Brian who wrote (37910)8/11/1999 5:37:00 PM
From: gdichaz  Respond to of 152472
 
Brian: Thanks. No I did not mean CDMA standards for MMDS. I was only interested in whether the code division aspect might have some advantage in some uses over time division - which I understand the current wireless "fiber" companies use for their big pipes as a substitute for fiber in the ground. Again I am not looking to what the Q can do right now with the current or even 3rd gen, but would there be an opportunity for the Q in the future in a "code division" related field - massive wireless data transmission? Thanks for pointing out in your post that:

"The channel "division" in code division multiple access is provided by the use of a "code." While this has many advantages, if you can provide the channel division using directional means ("spacial division multiple access" if you will) it will probably be cheaper and simpler. Typically point to multipoint are harder to configure directionally, so that is why I note it as a factor. Nonetheless, if the link is going to be shared by many users and up and fixed for some time, you would probably use directional means of channel separation."

That is along the lines of what I was trying to explore and you have articulated it well.

Again, my interest is simply in whether there might be an opportunity for the Q in a new and different use of the Q's code division expertise for rapid massive wireless data transmission beyond what is already in train for 3rd gen.

Chaz

PS What sparked my interest was that Terayon (TERN) is using CDMA on wire where the quality of the wire transmission is poor so the way code division handles noise interference - riding the noise rather than fighting it - is a plus on cable and fiber.