Hybrid ARQ in Multiple-Antenna Slow Fading Channels: Performance Limits and Optimal Linear Dispersion Code Design

Author

Shen, Cong ; Fitz, Michael P.

Author_Institution

Dept. of Electr. Eng., Univ. of California Los Angeles, Los Angeles, CA, USA

Volume

57

Issue

9

fYear

2011

Firstpage

5863

Lastpage

5883

Abstract

This paper focuses on studying the fundamental performance limits and linear dispersion code design for the MIMO-ARQ slow fading channel. The optimal average rate of well-known HARQ protocols is analyzed. The optimal design of space-time coding for the MIMO-ARQ channel is discussed. Information-theoretic measures are used to optimize the rate assignment and derive the optimum design criterion, which is then used to evaluate the optimality of existing space-time codes. A different design criterion, which is obtained from the error probability analysis of space-time coded MIMO-HARQ, is presented. Examples are studied to reveal the gain of ARQ feedback in space-time coded MIMO systems.

Keywords

MIMO communication; antenna arrays; automatic repeat request; fading channels; linear codes; protocols; space-time codes; HARQ protocols; MIMO-ARQ slow fading channel; multiple-antenna slow fading channels; optimal linear dispersion code design; space-time coded MIMO systems; Automatic repeat request; Decoding; Diversity reception; Fading; MIMO; Protocols; Receivers; Hybrid-ARQ; linear dispersion code; multiple-antenna channels; space-time codes;

fLanguage

English

Journal_Title

Information Theory, IEEE Transactions on

Publisher

ieee

ISSN

0018-9448

Type

jour

DOI

10.1109/TIT.2011.2161949

Filename

6006606