Optimal SNR Exponent for Discrete-Input MIMO ARQ Block-Fading Channels

Author

Chuang, A. ; Fabregas, A.G. ; Rasmussen, L.K. ; Collings, I.B.

Author_Institution

Sch. of Electr. & Inf. Eng., Univ. of Sydney, Sydney, NSW

fYear

2007

fDate

24-29 June 2007

Firstpage

2291

Lastpage

2295

Abstract

In this paper, we consider an automatic-repeat- request (ARQ) retransmission protocol signaling over a block-fading multiple-input, multiple-output (MIMO) channel. In particular, we consider fixed rate codes constructed over discrete complex signal constellations. We show that the optimal signal- to-noise ratio (SNR) exponent is given by a modified singleton bound, relating all the system parameters. To demonstrate the practical significance of the theoretical analysis, we present numerical results showing that practical singleton-bound-achieving maximum distance separable codes achieve the optimal SNR exponent.

Keywords

MIMO communication; automatic repeat request; channel coding; fading channels; signalling protocols; ARQ block-fading channels; automatic-repeat- request; discrete complex signal constellations; discrete-input MIMO channel; modified singleton bound; multiple-input multiple-output channel; optimal SNR exponent; optimal signal- to-noise ratio; retransmission protocol signaling; Australia; Automatic repeat request; Constellation diagram; Decoding; Delay; Diversity methods; Fading; MIMO; OFDM; Throughput;

fLanguage

English

Publisher

ieee

Conference_Titel

Information Theory, 2007. ISIT 2007. IEEE International Symposium on

Conference_Location

Nice

Print_ISBN

978-1-4244-1397-3

Type

conf

DOI

10.1109/ISIT.2007.4557561

Filename

4557561