IEEE ComSoc: Smart Antenna seminar @ SFU this week

Dave Michelson (dmichelson@ieee.org) Tue, 26 Oct 1999 12:54:47 -0700 

Date: Tue, 26 Oct 1999 12:54:47 -0700
From: Dave Michelson <dmichelson@ieee.org>
Subject: IEEE ComSoc: Smart Antenna seminar @ SFU this week



              SFU Smart Antenna Seminar Series

           co-sponsored by IEEE ComSoc and BC ASI

               Wednesday, October 27, 1999 
                      15:30 - 16:30
       
           Room 9705, Applied Sciences Building             

          Coffee and doughnuts courtesy of BC ASI


It's a double bill in which...
 
Lisa shows how optimized macrodiversity can pump up the number of users
in the strange world of indoor wireless
 
and...
 
Steve shows how to analyze performance of a general array-enabled
multicellular system without even firing up the simulator.
 
And now for the details:
 
"Optimizing the Downlink Power of Macrodiversity Antennas in an Indoor
DS-CDMA Environment"
 
Lisa Welburn

This seminar describes the downlink performance of an indoor DS-CDMA
system that performs an optimization on the transmit power of
macro-diversity antennas. Our results show that the power optimization
significantly increases system capacity. We present a global
optimization strategy that allocates power at the various macrodiversity
antennas so that the average of all users' BERs is minimized. In
practice, the complexity of this global optimization problem is reduced
as many of the links are extremely weak and can be removed from the
optimization. Our simulation results demonstrate that when compared to
traditional soft handoff power allocation, our optimzation algorithm
increases the capacity for a given quality of service. The simulation
results indicate downlink capacity gains on the order of 10-20%.
 
"Analytical Calculation of Outage Probability for a General Cellular
Mobile Radio System"

Steve Grant

Outage probability in the presence of fading, shadowing and path loss is
a useful measure of the capacity of a cellular mobile radio system.  Due
to the complicated nature of the spatial average, though, previous
capcity studies have resorted to numerical techniques such as Monte
Carlo simulation.  In this paper, we develop a fully analytical and
computationally straightforward technique for the computation of outage
probability through a simple, yet accurate, geometric approximation in
the spatial average.  An attractive feature of the technique is that it
does not rely upon a hexagonal cell layout, thus enabling the study of
more generalized systems in which the cochannel cells are of arbitrary
size and location.

Before you zap this message, make sure you have next week's intriguing
seminar written into your daytimer:..

"Increased Uplink Capacity for TDMA Systems Through Joint Detection With
Diversity Arrays"  
Steve Grant

"Single User and Multiuser Adaptive Transmitter Diversity for Rayleigh
Fading Channels"  
Jim Cavers

=====================================
James K. Cavers, Professor
School of Engineering Science
Simon Fraser University
8888 University Drive
Burnaby, B.C.,  V5A 1S6  Canada
tel: (604) 291-3281  fax: (604) 291-4951  email: cavers@sfu.ca

--                                                      -o)
Dave Michelson                                          /\\
dmichelson@ieee.org                                    _\_v