Title :
A New Fast Householder-Based Fractionally-Spaced FIR MMSE-DFE Computation Algorithm and its Real-Time Implementation
Author :
Islam, K. M Zahidul ; Al-Dhahir, Naofal ; McKown, Russell ; Dawes, Robert ; Stillo, Christopher
Author_Institution :
Dept. of Electr. Eng., Univ. of Texas at Dallas, Richardson, TX, USA
fDate :
11/1/2010 12:00:00 AM
Abstract :
We present a new parallel algorithm for computing the optimum coefficients of the fractionally-spaced FIR MMSE-DFE based on the Householder orthogonal transformation which avoids the back-substitution computational bottleneck. The resulting significant reductions in the algorithm´s execution time are demonstrated through a real-time FPGA implementation.
Keywords :
FIR filters; decision feedback equalisers; mean square error methods; parallel algorithms; FPGA; decision feedback equalizer; finite impulse response; householder orthogonal transformation; householder-based fractionally-spaced FIR MMSE-DFE computation algorithm; minimum mean squared error; optimum coefficient; parallel algorithm; Decision feedback equalizers; Field-flow fractionation; Finite impulse response filter; Optimized production technology; Real time systems; Receivers; Signal processing algorithms; Householder transformation; MMSE-DFE; QR decomposition; fractionally-spaced;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2010.093010.100816
