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

fYear

2012

fDate

6-9 May 2012

Firstpage

1

Lastpage

5

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference (VTC Spring), 2012 IEEE 75th

Conference_Location

Yokohama

ISSN

1550-2252

Print_ISBN

978-1-4673-0989-9

Electronic_ISBN

1550-2252

Type

conf

DOI

10.1109/VETECS.2012.6240093

Filename

6240093