Please use this identifier to cite or link to this item: http://localhost/handle/Hannan/131113
Title: Decoupled Uplink and Downlink in a Wireless System With Buffer-Aided Relaying
Authors: Rongkuan Liu;Petar Popovski;Gang Wang
Year: 2017
Publisher: IEEE
Abstract: This paper treats a multiuser relay scenario, where multiple user equipments have a two-way communication with a common base station in the presence of a buffer-equipped relay station. Each of the uplink (UL) and downlink (DL) transmission can take place over a direct or over a relayed path. Traditionally, the UL and the DL path of a given two-way link are coupled, that is, either both are direct links or both are relayed links. By removing the restriction for coupling, one opens the design space for a decoupled two-way links. Following this, we devise two protocols: orthogonal decoupled UL/DL buffer-aided (ODBA) relaying protocol and non-ODBA (NODBA) relaying protocol. In NODBA, the receiver can use successive interference cancellation to extract the desired signal from a collision between UL and DL signals. For both protocols, we characterize the transmission decision policies in terms of maximization of the average two-way sum rate of the system. The numerical results show that decoupling association and non-orthogonal radio access lead to significant throughput gains for two-way traffic.
URI: http://localhost/handle/Hannan/131113
volume: 65
issue: 4
More Information: 1507,
1517
Appears in Collections:2017

Files in This Item:
File SizeFormat 
7831429.pdf1.76 MBAdobe PDF
Title: Decoupled Uplink and Downlink in a Wireless System With Buffer-Aided Relaying
Authors: Rongkuan Liu;Petar Popovski;Gang Wang
Year: 2017
Publisher: IEEE
Abstract: This paper treats a multiuser relay scenario, where multiple user equipments have a two-way communication with a common base station in the presence of a buffer-equipped relay station. Each of the uplink (UL) and downlink (DL) transmission can take place over a direct or over a relayed path. Traditionally, the UL and the DL path of a given two-way link are coupled, that is, either both are direct links or both are relayed links. By removing the restriction for coupling, one opens the design space for a decoupled two-way links. Following this, we devise two protocols: orthogonal decoupled UL/DL buffer-aided (ODBA) relaying protocol and non-ODBA (NODBA) relaying protocol. In NODBA, the receiver can use successive interference cancellation to extract the desired signal from a collision between UL and DL signals. For both protocols, we characterize the transmission decision policies in terms of maximization of the average two-way sum rate of the system. The numerical results show that decoupling association and non-orthogonal radio access lead to significant throughput gains for two-way traffic.
URI: http://localhost/handle/Hannan/131113
volume: 65
issue: 4
More Information: 1507,
1517
Appears in Collections:2017

Files in This Item:
File SizeFormat 
7831429.pdf1.76 MBAdobe PDF
Title: Decoupled Uplink and Downlink in a Wireless System With Buffer-Aided Relaying
Authors: Rongkuan Liu;Petar Popovski;Gang Wang
Year: 2017
Publisher: IEEE
Abstract: This paper treats a multiuser relay scenario, where multiple user equipments have a two-way communication with a common base station in the presence of a buffer-equipped relay station. Each of the uplink (UL) and downlink (DL) transmission can take place over a direct or over a relayed path. Traditionally, the UL and the DL path of a given two-way link are coupled, that is, either both are direct links or both are relayed links. By removing the restriction for coupling, one opens the design space for a decoupled two-way links. Following this, we devise two protocols: orthogonal decoupled UL/DL buffer-aided (ODBA) relaying protocol and non-ODBA (NODBA) relaying protocol. In NODBA, the receiver can use successive interference cancellation to extract the desired signal from a collision between UL and DL signals. For both protocols, we characterize the transmission decision policies in terms of maximization of the average two-way sum rate of the system. The numerical results show that decoupling association and non-orthogonal radio access lead to significant throughput gains for two-way traffic.
URI: http://localhost/handle/Hannan/131113
volume: 65
issue: 4
More Information: 1507,
1517
Appears in Collections:2017

Files in This Item:
File SizeFormat 
7831429.pdf1.76 MBAdobe PDF