A low-complexity MIMO system with soft interference mitigation

Author

Pfletschinger, Stephan ; Navarro, Monica

Author_Institution

Centre Tecnologic de Telecomunicacions de Catalunya, Barcelona, Spain

Volume

1

fYear

2004

fDate

29 Nov.-3 Dec. 2004

Firstpage

396

Abstract

We present a low-complexity combination of a BLAST-like MIMO system and bit-interleaved coded modulation with iterative decoding (BICM-ID). We present a method to exploit soft information stemming from the outer decoder to mitigate the influence of multistream interference. Furthermore, we introduce an inner code to remove the error floor which is normally present in BICM-ID systems. This code is of rate one and has memory one; it thus adds no redundancy and only very little complexity. Both schemes are evaluated in the EXIT chart and with BER simulations.

Keywords

MIMO systems; error statistics; interference suppression; interleaved codes; iterative decoding; modulation coding; BER simulations; BICM-ID; BLAST-like MIMO system; EXIT chart; bit-interleaved coded modulation; error floor; inner code; iterative decoding; low-complexity MIMO system; memory one code; multistream interference mitigation; outer decoder; rate one code; soft information; soft interference mitigation; Bit error rate; Convolutional codes; Interference; Interleaved codes; Iterative decoding; MIMO; Modulation coding; Quadrature amplitude modulation; Redundancy; Transmitters;

fLanguage

English

Publisher

ieee

Conference_Titel

Global Telecommunications Conference, 2004. GLOBECOM '04. IEEE

Print_ISBN

0-7803-8794-5

Type

conf

DOI

10.1109/GLOCOM.2004.1377977

Filename

1377977