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To: CDMQ who wrote (69240)	3/18/2000 2:48:00 AM
From: Lin	Read Replies (1) \| Respond to of 152472

OFDM, this sound just like CDMA. The way I understand CDMA's advantage is it reduce the amount of guard band needed between channels so that we can use those bandwidth to transmit information. It also increase the amount of bandwidth reuse in the spacial division multiplexing scheme used in cell phone system. The information bandwidth really is limited. You can do multiplexing in polarization, time division, space division (cell phone), code division (frequency division, wavelength division), phase division, amplitude division. There are limited way to increase the information bandwidth with the available spectrum. Is this OFDM for real? Where is the "engineer"? Can you kick in your thought?