PUBLIC NOTICE
FEDERAL COMMUNICATIONS COMMISSION
445 12th St. SW
WASHINGTON, D.C. 20554                                                     

News media information 202/418-0500     Fax-On-Demand  202/418-2830     Internet:  http://www.fcc.gov 



                                                DA 01-2072

                                            Released: August 31, 2001


              OET Tutorials On New Spectrally Efficient Techniques


The first tutorial on September 7,  from 9:30 a.m. to 12:00 p.m., will cover adaptive antennas
(so-called "smart antennas") and be presented by Dr. Marc Goldburg of ArrayComm, Inc. in
the Commission meeting room.  Adaptive antennas can provide significant link budget
improvements and mitigate interference in communications systems.  This, in turn, can lead to
improved coverage, increased capacity,  and other operational benefits.  This technology can
be used, for example, in cellular systems.
The tutorial will begin with an overview of the economics of spectral efficiency, and continue
with a review of the relationships among spectral efficiency, coverage, network operating
costs, and end-user costs for current and planned cellular systems.  Basic principles of adaptive
antennas will then be presented, which will include classes of adaptive antenna systems,
fundamental signal processing gains, equipment architectures, and the primary performance
determinants of adaptive antenna systems.  The impacts of air interface design choices and
service definition with adaptive antenna performance will be explored and illustrated with
results from commercial deployments.  

The second tutorial will be presented by Randall West of ComSpace Corp., and take place on
September 7 from 1:30 to 3:00 in the Commission meeting room. Mr. West will discuss the
technology enhancements that permit ComSpace Corporation's Digital Channel Multicarrier
Architecture Technology to provide 8 independent communication paths on one 25 kHz channel. 
In particular, Mr. West will present the configuration, compression, modulation, range, and
queuing efficiencies that are involved in this new, spectrally efficient technique.

For further information, contact Robert Kimball at 202-418-2339 or TTY 202-418-2989.