Banner

FPGA implementation of blind adaptive decision feedback equalizer

ISSPIT 2009 • 2009
Back
Publication Information
Authors Ashmawy, Doaa and Abdel-Raheem, Esam and Mansour, Hala and Youssif, Mohamed and Mohanna, Mahmoud
Keywords Not Available
Journal ISSPIT 2009
Publisher IEEE
Volume Not Available
Issue Not Available
Pages 495-500
publication.type International
Paper Link Open Link
Supplementary Materials Not Available
Abstract
This paper considers field programmable gate array (FPGA) implementations for blind adaptive decision feedback equalizer (DFE) based on the IP core reported. The design can achieve channel equalization for 16-QAM and 64-QAM. Constant modulus algorithm (CMA) and multi-modulus algorithm (MMA) are considered for update the coefficients in the blind mode of operation which are followed by decision-directed (DD) mode. The system can work at a maximum clock frequency of 22 MHz. The design steps first consider fixed-point simulations using MATLAB fixed-point toolbox follows by FPGA implementations. The implementations are divided into complex weight update module, output computation module, error adjustment module, and decision device module. Finally, the DFE is implemented using Xilinx Virtex-II XC2VP100 FPGA.