Low Complexity Two Stage Detection Scheme for MIMO Systems

Author

Chouayakh, Mohamed ; Knopp, Andreas ; Lankl, Berthold

Author_Institution

Munich Univ. of the Bundeswehr, Neubiberg

fYear

2007

fDate

1-6 July 2007

Firstpage

1

Lastpage

5

Abstract

This paper provides an approach to reach a near maximum likelihood performance, for MIMO systems, with a strongly reduced computational effort. This method is based on a two-step detection. The first detection step will be performed by using a MMSE equalizer and a subsequent decision unit The second step is a reduced search (RS) algorithm, that is applied only in a neighborhood of the detected symbols of the first step. For complexity reasons only the least reliable symbols are processed by the RS algorithm. The simulation results show that this MMSE RS detector outperforms the MMSE V-BLAST detector. It provides an improved performance using the same complexity.

Keywords

MIMO communication; equalisers; least mean squares methods; maximum likelihood detection; MIMO; MMSE RS detector; MMSE V-BLAST detector; MMSE equalizer; RS algorithm; two stage detection scheme; Antenna measurements; Detection algorithms; Detectors; Equalizers; MIMO; Mutual information; Quadrature amplitude modulation; Receiving antennas; Transmitting antennas; Wireless LAN;

fLanguage

English

Publisher

ieee

Conference_Titel

Information Theory for Wireless Networks, 2007 IEEE Information Theory Workshop on

Conference_Location

Solstrand

Print_ISBN

978-1-4244-1200-6

Electronic_ISBN

978-1-4244-1200-6

Type

conf

DOI

10.1109/ITWITWN.2007.4318062

Filename

4318062