Title :
Frequency Domain Turbo Equalization for MIMO-CPSC Systems with Large Delay Spreads
Author :
Itankar, Yogendra U. ; Chockalingam, A.
Author_Institution :
Dept. of ECE, Indian Inst. of Sci., Bangalore, India
Abstract :
In this paper, we consider low-complexity turbo equalization for multiple-input multiple-output (MIMO) cyclic prefixed single carrier (CPSC) systems in MIMO inter-symbol interference (ISI) channels characterized by large delay spreads. A low-complexity graph based equalization is carried out in the frequency domain. Because of the reduction in correlation among the noise samples that happens for large frame sizes and delay spreads in frequency domain processing, improved performance compared to time domain processing is shown to be achieved. This improved performance is attractive for equalization in severely delay spread ISI channels like ultrawideband channels and underwater acoustic channels.
Keywords :
MIMO communication; equalisers; frequency-domain analysis; graph theory; intersymbol interference; time-domain analysis; turbo codes; ISI channel; MIMO intersymbol interference; MIMO-CPSC system; cyclic prefixed single carrier system; frequency domain turbo equalization; large delay spreads; low-complexity graph based equalization; low-complexity turbo equalization; multiple-input multiple-output system; time domain processing; ultrawideband channel; underwater acoustic channel; Approximation methods; Bit error rate; Delay; Equalizers; Frequency domain analysis; MIMO; Vectors;
Conference_Titel :
Vehicular Technology Conference (VTC Spring), 2012 IEEE 75th
Conference_Location :
Yokohama
Print_ISBN :
978-1-4673-0989-9
Electronic_ISBN :
1550-2252
DOI :
10.1109/VETECS.2012.6240093
