BARD Downloads
DATA
The data downloads section provides measured received signal
data (currently from voiceband modems, and ultimately also from microwave
radio and cable TV) and experimental data-based tapped-delay-line
channel models with complex-valued FIR coefficients (currently for a few
microwave radio channels, with more on the way, and ultimately for cable
TV channels as well). This data offers the possibility for meaningful
(standardized) algorithm comparisions and, thus, should enhance the
information flow between CU-BERG and others with similar interests. Plus,
the data set offers access to problems with features of undeniable practical
significance.
TUTORIALS
The following list of downloadable tutorials include
Matlab code that can be used to examine the
data and optimally and/or adaptively equalize it. The tutorials
include examples intended to illustrate performance features of various
(blind) equalizers isolated in our research and teaching.
-
"Blind and Semi-Blind Channel Equalization for Wireless Broadcast
Channels" - Viewgraphs from Professor Johnson's seminar at various
universities in China.
- IEEE 2000 Asia Pacific Conference on
Circuits and Systems, Tianjin, China (December 5, 2000)
- Tsinghua
University, Beijing, China (December 7, 2000)
- Chao-Tung University,
Xi'an, China (December 11, 2000)
-
Professor Johnson's Seminar at Lucent Technologies entitled
"Recent and Future Activities of the Cornell University Blind Equalization
Research Group" (Real Audio)
-
CMA-FSE error surface examples (w/ Matlab program)
-
Signed Error CMA in the presence of noise (w/ Matlab program)
-
Joint MMSE-FSE+DFE design
-
CMA on Microwave Channel (w/ Matlab program)
Microwave radio channel models (see the data section above),
16-QAM source, noisy synthesized received signal, cold-start CMA, before
and after impulse responses and eye patterns.
-
CMA on Modem Data Signal (w/ Matlab program)
Signal received from modem (see the data section above),
unknown telephone bandpass channel, cold-start CMA, before and after eye
patterns.
-
Minimum MSE FSE Design Demo (w/ Matlab program)
User-selected channels, QAM source, channel noise, optimum equalizer
computation, various performance measure curves.
SIMULATION TOOLS
Warning! The software below was developed and tested in Matlab version
5. Using Matlab 6 may cause errors, in particular with the BERGulator
and the DFEcator.
This material is based upon work supported by the National Science
Foundation.
Any opinions, findings, and conclusions or recommendations expressed in
this material are those of the author(s) and do not necessarily reflect
the views of the National Science Foundation.