TY - GEN
T1 - An adaptive decision feedback equalizer for time-varying frequency selective MIMO channels
AU - Rontogiannis, Athanasios A.
AU - Kekatos, Vassilis
AU - Berberidis, Kostas
PY - 2006
Y1 - 2006
N2 - A new adaptive equalizer for wireless systems operating over time-varying and frequency selective multiple-input multiple-output (MIMO) channels is proposed. The equalizer consists of a number of decision feedback equalizer (DFE) stages, each one detecting a single stream. The equalizer filters, as well as the ordering by which the streams are extracted, are updated according to a LS cost function in a VBLAST-like fashion. By taking advantage of the underlying order recursive problem structure, a computationally efficient and numerically robust algorithm is developed based on the Cholesky factorization of the input data autocorrelation matrix. The convergence and tracking capabilities of the equalizer are studied through extensive computer simulations, and its BER performance is evaluated for hostile, time and frequency selective channels.
AB - A new adaptive equalizer for wireless systems operating over time-varying and frequency selective multiple-input multiple-output (MIMO) channels is proposed. The equalizer consists of a number of decision feedback equalizer (DFE) stages, each one detecting a single stream. The equalizer filters, as well as the ordering by which the streams are extracted, are updated according to a LS cost function in a VBLAST-like fashion. By taking advantage of the underlying order recursive problem structure, a computationally efficient and numerically robust algorithm is developed based on the Cholesky factorization of the input data autocorrelation matrix. The convergence and tracking capabilities of the equalizer are studied through extensive computer simulations, and its BER performance is evaluated for hostile, time and frequency selective channels.
UR - http://www.scopus.com/inward/record.url?scp=48749126157&partnerID=8YFLogxK
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U2 - 10.1109/SPAWC.2006.346400
DO - 10.1109/SPAWC.2006.346400
M3 - Conference contribution
AN - SCOPUS:48749126157
SN - 078039710X
SN - 9780780397101
T3 - IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC
BT - 2006 IEEE 7th Workshop on Signal Processing Advances in Wireless Communications, SPAWC
T2 - 2006 IEEE 7th Workshop on Signal Processing Advances in Wireless Communications, SPAWC
Y2 - 2 July 2006 through 5 July 2006
ER -