Implementation of space-time equalizer consisting of constraint SMI arrays and MLSE

Author

Fujii, Masaaki ; Toda, Takeshi

Author_Institution

Fujitsu Labs. Ltd., Kawasaki, Japan

Volume

3

fYear

2000

fDate

2000

Firstpage

1637

Abstract

We developed a space-time equalizer consisting of constraint SMI arrays and MLSE using multi-DSPs and FPGAs. The proposed scheme combines space diversity branches to maximize the SINR of the direct path and the one-symbol delayed path by using multiple space-time processing. Then path diversity branches are combined using a branch-metric-combining Viterbi equalizer. We evaluated the BER performance of this developed receiver by using an adaptive array test system. The experimental results indicate that the space-time equalizer provides both space diversity gains and path diversity gains while suppressing longer delayed paths

Keywords

cellular radio; delays; diversity reception; equalisers; error statistics; maximum likelihood sequence estimation; multipath channels; radio receivers; telecommunication equipment testing; BER performance; FPGA; MLSE; SINR; adaptive array test system; branch-metric-combining Viterbi equalizer; constraint SMI arrays; mobile radio; multi-DSPs; multiple space-time processing; one-symbol delayed path; path diversity branches; receiver; space diversity branches; space-time equalizer; Adaptive arrays; Adaptive systems; Bit error rate; Delay; Diversity methods; Equalizers; Field programmable gate arrays; Maximum likelihood estimation; Signal to noise ratio; Viterbi algorithm;

fLanguage

English

Publisher

ieee

Conference_Titel

Global Telecommunications Conference, 2000. GLOBECOM '00. IEEE

Conference_Location

San Francisco, CA

Print_ISBN

0-7803-6451-1

Type

conf

DOI

10.1109/GLOCOM.2000.891915

Filename

891915