Title :
Reduced Complexity MIMO MMSE-DFE
Author :
Kan, Wen-Chih ; Sobelman, Gerald E.
Author_Institution :
Dept. of Electr. & Comput. Eng., Minnesota Univ., Minneapolis, MS
fDate :
Oct. 28 2005-Nov. 1 2005
Abstract :
We present a reduced complexity MIMO MMSE-DFE coefficient computation algorithm which is based on an improvement to the fast block algorithm developed in N. Al-Dhahir and A.H. Sayed (2000). We have achieved a nearly 50% reduction in complexity by eliminating the computation of unnecessary terms. The effects due to finite precision arithmetic on SNR are also considered and a minimum fixed-point word length of 32 bits results in no noticeable performance loss. Hardware implementation issues depend on several factors and these are also discussed
Keywords :
MIMO systems; computational complexity; decision feedback equalisers; least mean squares methods; radiocommunication; MIMO MMSE-DFE; SNR; fast block algorithm; finite precision arithmetic; minimum fixed-point word length; reduced complexity; Bandwidth; Decision feedback equalizers; Dispersion; Fading; Filters; Frequency; Hardware; Intersymbol interference; MIMO; Maximum likelihood estimation;
Conference_Titel :
Signals, Systems and Computers, 2005. Conference Record of the Thirty-Ninth Asilomar Conference on
Conference_Location :
Pacific Grove, CA
Print_ISBN :
1-4244-0131-3
DOI :
10.1109/ACSSC.2005.1599869
