Distinguished Lecture by Dr. Aminata Garba-Carnegie Mellon University in Rwanda - Carnegie Mellon University

Capacity and BER Results for CDMA network transmission with
non-Gaussian multi-user interference

Aminata

By Dr. Aminata Garba
Bachelor degree in Electrical Engineering from Laval University
Master of Engineering and Ph.D. degrees in telecommunication from McGill University.

Dr. Aminata Garba gave a lecture at the Carnegie Mellon University in Rwanda on the Capacity and BER results for CDMA network transmission with non-Gaussian multi-user interference. The first part of the presentation summarized some results on the capacity and BER of CDMA network transmission with single-user demodulation and decoding at the receiver. It showed that shaping the multi-user interference (noise) to non-Gaussian structure and using error correcting codes and multi-level modulation can allow the exceeding of the conjectured capacity limit of CDMA with single-user decoding (0.72 bits per CDMA chip) more than 5 times. 



The non-Gaussian capacity gains are shown to be robust under practical channel imperfections, such as the Gaussian noise due to receiver electronics, channel fading encountered in wireless systems and Poisson-distributed optical shot noise. Finally, a brief overview of ICT regulation and selected topics for future work are presented. 




Aminata Garba received the Bachelor degree in Electrical Engineering from Laval University and respectively the Master of Engineering and Ph.D. degrees in telecommunication from McGill University. She has worked at the National Institute for Scientific Research (Canada), the National Center for Scientific Research (France) and the Regulatory Authority of Niger in the development and implementation of telecommunications and utilities regulatory frameworks. 



Her research interests include coding, information theory, signal processing, transceiver design, and optical and wireless communication systems, ICT for development, public policy and regulations.