The End Of Spectrum Scarcity?

May 2004
Business Communications Review;May2004, Vol. 34 Issue 5, p20
Trade Publication
No issue is more basic to the expansion of the wireless market than the availability of radio spectrum. Spectrum is the beachfront property of wireless; there is only so much to go around. This article focuses on the most recent developments in transmission technology that are designed specifically to address the peculiarities of the radio environment. Multiple-Input-Multiple-Output antennas take antenna diversity a step further by using multiple transmitting antennas and multiple receive antennas. A phased array is a special type of multiple output antenna. Ultra-Wideband transmission is based on spread-spectrum technology. Another low power radio technology that could increase the available spectrum is mesh networking. With Software Defined Radio, simply changing the software would let the radio operate on a different frequency band and use a different protocol. One last technique looks to get double-duty out of the current band used for geosynchronous satellites. This technology is called Multichannel Video and Data Distribution Service.


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