Please use this identifier to cite or link to this item: http://localhost/handle/Hannan/656606
Title: On Alternate Relaying With Improper Gaussian Signaling
Authors: Mohamed Gaafar;Osama Amin;Aissa Ikhlef;Anas Chaaban;Mohamed-Slim Alouini
subject: alternate relaying|asymmetric complex signaling|Improper Gaussian signaling|inter-relay-interference|decode-and-forward|two-path relaying
Year: 2016
Publisher: IEEE
Abstract: In this letter, we investigate the potential benefits of adopting improper Gaussian signaling (IGS) in a two-hop alternate relaying (AR) system. Given the known benefits of using IGS in interference-limited networks, we propose to use IGS to relieve the inter-relay interference (IRI) impact on the AR system assuming no channel state information is available at the source. In this regard, we assume that the two relays use IGS and the source uses proper Gaussian signaling (PGS). Then, we optimize the degree of impropriety of the relays signal, measured by the circularity coefficient, to maximize the total achievable rate. Simulation results show that using IGS yields a significant performance improvement over PGS, especially when the first hop is a bottleneck due to weak source-relay channel gains and/or strong IRI.
Description: 
URI: http://localhost/handle/Hannan/151300
http://localhost/handle/Hannan/656606
ISSN: 1089-7798
volume: 20
issue: 8
Appears in Collections:2016

Files in This Item:
File Description SizeFormat 
7485889.pdf425.99 kBAdobe PDFThumbnail
Preview File
Title: On Alternate Relaying With Improper Gaussian Signaling
Authors: Mohamed Gaafar;Osama Amin;Aissa Ikhlef;Anas Chaaban;Mohamed-Slim Alouini
subject: alternate relaying|asymmetric complex signaling|Improper Gaussian signaling|inter-relay-interference|decode-and-forward|two-path relaying
Year: 2016
Publisher: IEEE
Abstract: In this letter, we investigate the potential benefits of adopting improper Gaussian signaling (IGS) in a two-hop alternate relaying (AR) system. Given the known benefits of using IGS in interference-limited networks, we propose to use IGS to relieve the inter-relay interference (IRI) impact on the AR system assuming no channel state information is available at the source. In this regard, we assume that the two relays use IGS and the source uses proper Gaussian signaling (PGS). Then, we optimize the degree of impropriety of the relays signal, measured by the circularity coefficient, to maximize the total achievable rate. Simulation results show that using IGS yields a significant performance improvement over PGS, especially when the first hop is a bottleneck due to weak source-relay channel gains and/or strong IRI.
Description: 
URI: http://localhost/handle/Hannan/151300
http://localhost/handle/Hannan/656606
ISSN: 1089-7798
volume: 20
issue: 8
Appears in Collections:2016

Files in This Item:
File Description SizeFormat 
7485889.pdf425.99 kBAdobe PDFThumbnail
Preview File
Title: On Alternate Relaying With Improper Gaussian Signaling
Authors: Mohamed Gaafar;Osama Amin;Aissa Ikhlef;Anas Chaaban;Mohamed-Slim Alouini
subject: alternate relaying|asymmetric complex signaling|Improper Gaussian signaling|inter-relay-interference|decode-and-forward|two-path relaying
Year: 2016
Publisher: IEEE
Abstract: In this letter, we investigate the potential benefits of adopting improper Gaussian signaling (IGS) in a two-hop alternate relaying (AR) system. Given the known benefits of using IGS in interference-limited networks, we propose to use IGS to relieve the inter-relay interference (IRI) impact on the AR system assuming no channel state information is available at the source. In this regard, we assume that the two relays use IGS and the source uses proper Gaussian signaling (PGS). Then, we optimize the degree of impropriety of the relays signal, measured by the circularity coefficient, to maximize the total achievable rate. Simulation results show that using IGS yields a significant performance improvement over PGS, especially when the first hop is a bottleneck due to weak source-relay channel gains and/or strong IRI.
Description: 
URI: http://localhost/handle/Hannan/151300
http://localhost/handle/Hannan/656606
ISSN: 1089-7798
volume: 20
issue: 8
Appears in Collections:2016

Files in This Item:
File Description SizeFormat 
7485889.pdf425.99 kBAdobe PDFThumbnail
Preview File