NDLI: Achievable Rate Region of the Bidirectional Buffer-Aided Relay Channel With Block Fading

Content Provider	IEEE Xplore Digital Library
Author	Jamali, V. Zlatanov, N. Ikhlef, A. Schober, R.
Copyright Year	1963
Abstract	The bidirectional relay channel, in which two users communicate with each other through a relay node, is a simple but fundamental and practical network architecture. In this paper, we consider the block fading bidirectional relay channel with a decode-and-forward relay and propose efficient transmission strategies that exploit the block fading property of the channel. We assume that a direct link between the two users is not present and consider two transmission modes: 1) the multiple-access mode (both users transmit to the relay) and 2) the broadcast mode (the relay transmits to both users). Most existing relaying protocols assume a fixed schedule for using these transmission modes. In contrast, we abandon the restriction of having a fixed and predefined schedule and propose to optimize the selection of the transmission modes and the associated transmission rates based on the instantaneous channel state information (CSI) of the involved links. Thereby, we consider two different types of transmit power constraints: 1) a fixed transmit power for each node and 2) a per-node long-term power constraint. To enable the use of a nonpredefined schedule for transmission mode selection, the relay has to be equipped with two buffers for storage of the information received from both users. We develop new relaying protocols based on adaptive mode selection and provide the corresponding achievable long-term rate regions. In particular, based on the CSI of the involved links, the optimal transmission mode as well as the optimal transmission rates and/or the transmit powers of the nodes are chosen in each time slot to maximize the weighted sum rate of both users. By varying the weights assigned to the users, the boundary surface of the achievable long-term rate region of the proposed protocol can be obtained. In addition, we discuss and address two practical challenges for the implementation of the proposed protocols, namely, the availability of the knowledge of the channel statistics required for the implementation of the optimal protocols, and the increase of the end-to-end delay due to the data buffering. Numerical results confirm the superiority of the proposed buffer-aided protocols compared with existing bidirectional relaying protocols.
Sponsorship	IEEE Information Theory Society
Starting Page	7090
Ending Page	7111
Page Count	22
File Size	1958684
File Format	PDF
ISSN	00189448
Volume Number	60
Issue Number	11
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Relays Protocols Fading Buffer storage Optimization Schedules Decoding buffer-aided relaying Bidirectional transmission rate region adaptive mode selection power allocation
Content Type	Text
Resource Type	Article
Subject	Library and Information Sciences Information Systems Computer Science Applications

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Buffer-Aided Relaying With Adaptive Link Selection—Fixed and Mixed Rate Transmission

Achievable Rate of the Half-Duplex Multi-Hop Buffer-Aided Relay Channel With Block Fading

Achievable Rate Region of the Bidirectional Buffer-Aided Relay Channel with Block Fading

Overlay Cognitive Radios With Channel-Aware Adaptive Link Selection and Buffer-Aided Relaying

Achievable Rates for the Fading Half-Duplex Single Relay Selection Network Using Buffer-Aided Relaying

Sum-Rate Optimization in a Two-Way Relay Network with Buffering

Resource Allocation for Two Source-Destination Pairs Sharing a Single Relay with a Buffer

Broadcast Approaches to the Diamond Channel

Relaying protocols for buffer-aided energy harvesting wireless cooperative networks

Achievable Rate Region of the Bidirectional Buffer-Aided Relay Channel With Block Fading

Similar Documents

Buffer-Aided Relaying With Adaptive Link Selection—Fixed and Mixed Rate Transmission

Achievable Rate of the Half-Duplex Multi-Hop Buffer-Aided Relay Channel With Block Fading

Achievable Rate Region of the Bidirectional Buffer-Aided Relay Channel with Block Fading

Overlay Cognitive Radios With Channel-Aware Adaptive Link Selection and Buffer-Aided Relaying

Achievable Rates for the Fading Half-Duplex Single Relay Selection Network Using Buffer-Aided Relaying

Sum-Rate Optimization in a Two-Way Relay Network with Buffering

Resource Allocation for Two Source-Destination Pairs Sharing a Single Relay with a Buffer

Broadcast Approaches to the Diamond Channel

Relaying protocols for buffer-aided energy harvesting wireless cooperative networks

Achievable Rate Region of the Bidirectional Buffer-Aided Relay Channel With Block Fading