Title :
MIMO MMSE-DFE: a general framework
Author :
Chevreuil, A. ; Vandendorpe, L.
Author_Institution :
Commun. & Remote Sensing Lab., Univ. Catholique de Louvain, Belgium
Abstract :
We investigate and revisit the structure and performance of a multiple input/multiple output (MIMO) decision feedback equalizer (DFE) for a minimum mean square error (MMSE) criterion. The output model dealt with is very general, and applies to filter bank-based multicarrier transmission, CDMA, TDMA, FDMA systems, systems with transmitter-induced cyclostationarity and so on. Moreover, the transmission model and the associated receiver account for excess bandwidth and multi-sensor configurations. The purpose of the paper is to derive MIMO MMSE DFE in a concise manner by means of fractionally spaced devices. From the receiver derived here it clearly appears that the first operation to be performed is matched filtering. Besides, it is also demonstrated why geometrical MSE is the criterion to be used. As an illustrative example, an OFDM transmission scheme is considered
Keywords :
MIMO systems; OFDM modulation; decision feedback equalisers; filtering theory; least mean squares methods; matched filters; multi-access systems; receivers; transmitters; CDMA; DFE; FDMA; MIMO; MMSE; OFDM transmission scheme; TDMA; decision feedback equalizer; filter bank; fractionally spaced devices; geometrical MSE; matched filtering; minimum mean square error; multi-sensor configurations; multicarrier transmission; multiple input/multiple output; receiver; transmitter-induced cyclostationarity; Bandwidth; Decision feedback equalizers; Filter bank; Filtering; Frequency division multiaccess; MIMO; Matched filters; Mean square error methods; Multiaccess communication; Time division multiple access;
Conference_Titel :
Statistical Signal and Array Processing, 1998. Proceedings., Ninth IEEE SP Workshop on
Conference_Location :
Portland, OR
Print_ISBN :
0-7803-5010-3
DOI :
10.1109/SSAP.1998.739411
