Reduced-complexity space-time turbo-equalization for frequency-selective MIMO channels

Author

Bauch, Gerhard ; Al-Dhahir, Naofal

Author_Institution

Inst. for Commun. Eng., Munich Univ. of Technol., Germany

Volume

1

Issue

4

fYear

2002

fDate

10/1/2002 12:00:00 AM

Firstpage

819

Lastpage

828

Abstract

We consider turbo equalization of space-time-coded transmission over frequency-selective fading multiple-input-multiple-output (MIMO) channels. A MIMO finite-impulse-response prefilter is proposed and shown to reduce the turbo equalizer complexity significantly at a small performance loss. Advantages of the proposed scheme are that we do not alter the equalization algorithm or require the channel to be minimum phase. The prefiltered turbo equalizer is an attractive receiver structure for broadband wireless transmission using spectrally-efficient high-order modulation schemes as in EDGE.

Keywords

FIR filters; MIMO systems; broadband networks; channel coding; computational complexity; equalisers; fading channels; filtering theory; radio networks; radio receivers; trellis codes; turbo codes; FIR prefilter; broadband wireless transmission; equalization algorithm; finite-impulse-response prefilter; frequency-selective MIMO channels; frequency-selective fading channels; minimum phase channel; multiple input multiple output channels; prefiltered turbo equalizer; receiver structure; reduced-complexity space-time turbo-equalization; space-time trellis code; spectrally-efficient high-order modulation; turbo equalizer complexity reduction; Associate members; Convolutional codes; Decision feedback equalizers; Fading; Frequency; MIMO; Receiving antennas; Transmitting antennas; Viterbi algorithm; Wireless communication;

fLanguage

English

Journal_Title

Wireless Communications, IEEE Transactions on

Publisher

ieee

ISSN

1536-1276

Type

jour

DOI

10.1109/TWC.2002.805094

Filename

1045312