ARQ strategies for 2 Ã\x97 2 spatially multiplexed MIMO systems

Author

De Carvalho, Elisabeth ; Popovski, Petar

Author_Institution

Aalborg Univ., Aalborg

fYear

2006

fDate

Oct. 29 2006-Nov. 1 2006

Firstpage

1666

Lastpage

1670

Abstract

This paper presents packet retransmission strategies for MIMO spatial multiplexing (SM) systems with independent coding and independent ARQ processes per stream. The received signals containing the retransmitted packets are kept in memory and combined. We present two methods to select the retransmission antennas. The first methods is based on CSI: the optimization criterion is the minimization of the SNRs averaged over the outputs of a zero forcing linear equalizer. The second method is blind to CSI. When 2 packets are decoded with errors, retransmission follows a space time block code (STBC) structure, allowing a seamless switching between SM and STBC.

Keywords

MIMO communication; automatic repeat request; block codes; equalisers; multiplexing; space-time codes; ARQ strategies; MIMO spatial multiplexing systems; channel state information; independent coding; packet retransmission strategies; retransmission antennas; space time block code structure; zero forcing linear equalizer; Automatic repeat request; Block codes; Decoding; Equalizers; MIMO; Packet switching; Samarium; Switches; Transmitters; Transmitting antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Signals, Systems and Computers, 2006. ACSSC '06. Fortieth Asilomar Conference on

Conference_Location

Pacific Grove, CA

ISSN

1058-6393

Print_ISBN

1-4244-0784-2

Electronic_ISBN

1058-6393

Type

conf

DOI

10.1109/ACSSC.2006.355043

Filename

4176853