Palestra: Computationally Efficient Multiuser and MIMO Detection based on Dichotomous Coordinate Descent Iterations

Resumo: The detection in multiuser (MUD) and multiple-input multiple-output (MIMO) systems can increase the spectral efficiency, and therefore is of great interest. Although multiuser and MIMO detection is mature in theory, the real-time implementation is still an open issue. Many suboptimal detection schemes have been proposed, possessing low computational load, but also having poorer detection performance compared to the optimal detector. In this work, we propose several detectors which possess low complexity and high detection performance. These detectors are based on Dichotomous Coordinate Descent (DCD) iterations, which are multiplication and division free, and therefore are attractive for real-time implementation. We design the FPGA architecture for the detectors and implement them on the FPGA board. These designs require a small number of FPGA slices. Numerical results have shown that the fixed-point FPGA implementation and a floating-point implementation have similar detection performance.

Sobre a autora: Zhi Quan received her Bsc degress in Electronics from the Hunan University, China in 2001. From 2002 to 2004, she worked as a system engineer in SonyEricssion, Beijing. In 2005, she took the PhD course in the Communication Group of the University of York, the United Kingdom and finished her study in 2009. Now she is a postdoc in the Program of Post-Graduation on Electrical Engineering  of the Federal University of Juiz de fora. Her general interests are in the areas of signal processing and communications including multiuser detection, MIMO and OFDM, as well as FPGA design and implementation.

Local: Anfiteatro do PPEE
Data: 13/01/2010
Horário: 16hs
Anfitrião: Prof. Moisés Ribeiro