Title :
Fast computation of finite-length MIMO MMSE decision feedback equalizers
Author :
Merched, Ricardo ; Yousef, Nabil R.
Author_Institution :
Dept. of Electr. Eng., Fed. Univ. of Rio de Janeiro, Brazil
Abstract :
We present a new fast algorithm for computing multi-input-multi-output (MIMO) minimum mean-square-error decision feedback equalizer (MMSE-DFE) taps. The new algorithm is obtained by identifying the feedforward equalizer solution as a well known expression encountered in fast recursive least squares (RLS) adaptive algorithms, and the feedback equalizer as a convolution of the feedforward equalizer with the channel. The proposed method is less complex, more structured, and more stable in finite precision than known algorithms in the literature, which rely on fast methods for Cholesky decomposition.
Keywords :
MIMO systems; decision feedback equalisers; feedforward; least mean squares methods; telecommunication channels; feedforward equalizer solution; finite-length MIMO MMSE decision feedback equalizers; minimum mean-square-error; multiinput-multioutput; recursive least squares adaptive algorithms; Adaptive algorithm; Convolution; Decision feedback equalizers; Digital communication; Filters; Least squares methods; MIMO; Resonance light scattering; Systems engineering and theory; Throughput;
Conference_Titel :
Signals, Systems and Computers, 2004. Conference Record of the Thirty-Eighth Asilomar Conference on
Print_ISBN :
0-7803-8622-1
DOI :
10.1109/ACSSC.2004.1399468
