Amplify-and-Forward Based Two-Way Relay ARQ System With Relay Combination

Author

Sheng Luo ; Kah Chan Teh

Author_Institution

Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore, Singapore

Volume

19

Issue

2

fYear

2015

fDate

Feb. 2015

Firstpage

299

Lastpage

302

Abstract

In this letter, we propose an automatic repeat request (ARQ) protocol for the amplify-and-forward (AF) based two-way relay system. In the proposed ARQ scheme, the ARQ process is carried out by the relay node (RN). We assume that the RN has one buffer and it can store the signals received. With the help of the buffer, the RN can combine the signals received from different slots and choose to transmit or receive adaptively. Two combining methods, namely the maximal sum signal-to-noise ratio combining (MSC) scheme and the maximal minimum signal-to-noise ratio combining (MMC) scheme, are proposed, which are shown to improve the reliability of the relaying systems.

Keywords

amplify and forward communication; automatic repeat request; diversity reception; routing protocols; telecommunication network reliability; AF based two-way relay system; ARQ process; ARQ protocol; ARQ scheme; MMC scheme; MSC scheme; amplify-and-forward based two-way relay ARQ system; automatic repeat request protocol; maximal minimum signal-to-noise ratio combining; maximal sum signal-to-noise ratio combining; relay combination; relay node; reliability; Automatic repeat request; Buffer storage; Complexity theory; Eigenvalues and eigenfunctions; Relays; Signal to noise ratio; Vectors; Cooperative relaying; buffer-aided relaying; bufferaided relaying; two-way relay ARQ; two-way relay automatic repeat request (ARQ);

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2014.2379272

Filename

6980101