Systems Seminar
Modeling and Capacity of Multi-Antenna Multipath Channels
Prof. Akbar Sayeed
UW ECE Dept.
Abstract
Accurate and tractable channel modeling is critical to
realizing the full potential of antenna arrays in wireless
communications. In this talk I will present a framework
for modeling multi-antenna multipath channels based on
the notion of virtual spatial angles. The virtual angles
are fixed a priori and are determined by the number of
antennas at the transmitter and receiver and the spacing
between them. The model essentially corresponds to a
coordinate transformation via fixed spatial basis functions
at the transmitter and receiver. The resulting linear channel
matrix representation in the virtual space encompasses all
existing models and provides a natural link between the
actual physical propagation environment and the channel
statistics induced by it. For any given scattering environment,
the model clearly reveals the two key parameters affecting
channel capacity: the number of parallel channels and the
level of diversity associated with each parallel channel.
In addition to providing realistic estimates of channel
capacity, the virtual space framework also suggests
low-complexity channel approximations that may be leveraged
in efficient transceiver design.
Time and Place: Wed., Nov. 29, 3:30-4:30 pm in 4610 Engr. Hall.
SYSTEMS SEMINAR WEB PAGE:
http://www.cae.wisc.edu/~gubner/seminar/