Coordinated Hybrid Automatic Repeat Request

Author

Makki, Behrooz ; Svensson, Tommy ; Eriksson, Thomas ; Alouini, Mohamed-Slim

Author_Institution

Chalmers Univ. of Technol., Goteborg, Sweden

Volume

18

Issue

11

fYear

2014

fDate

Nov. 2014

Firstpage

1975

Lastpage

1978

Abstract

We develop a coordinated hybrid automatic repeat request (HARQ) approach. With the proposed scheme, if a user message is correctly decoded in the first HARQ rounds, its spectrum is allocated to other users, to improve the network outage probability and the users´ fairness. The results, which are obtained for singleand multiple-antenna setups, demonstrate the efficiency of the proposed approach in different conditions. For instance, with a maximum of M retransmissions and single transmit/receive antennas, the diversity gain of a user increases fromMto(J + 1)(M - 1) + 1 where J is the number of users helping that user.

Keywords

automatic repeat request; probability; radiocommunication; receiving antennas; telecommunication network reliability; transmitting antennas; HARQ approach; HARQ rounds; coordinated hybrid automatic repeat request; diversity gain; multiple-antenna setups; network outage probability; single-antenna setups; transmit-receive antennas; user fairness; user message; Automatic repeat request; Diversity methods; MIMO; Protocols; Radio spectrum management; Signal to noise ratio; Throughput; HARQ; coordination; fairness;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2014.2360178

Filename

6910220