NDLI: Forwarding interfering signals in wireless ad hoc networks under MRC receiver processing

Content Provider	IEEE Xplore Digital Library
Author	Argyriou, A.
Copyright Year	2015
Description	Author affiliation: Dept. of Electr. & Comput. Eng., Univ. of Thessaly, Volos, Greece (Argyriou, A.)
Abstract	Cooperation in wireless networks is embraced today both from cellular and device-to-device (D2D) communication standards. The reason is that this communication paradigm offers much-needed improvements in the spectral efficiency of wireless communication. Its foundation is the cooperation between nodes that are physically in close proximity. This means that it can fit very well in modern networks that are characterized by increased densities of both infrastructure and users. However, higher node density and higher number of opportunities for cooperation means also more interference. In this paper we investigate the potential throughput gain in a densely deployed interference-limited wireless network when the nodes cooperate. We consider a simple cooperative protocol that allows the relays to overhear the interfering signals and then they amplify and forward (AF) the received composite signal. We consider that the final destination employs maximum ratio combining (MRC) of the directly received signal and the forwarded interference. Given the previous protocol and decoding algorithm, we formulate the problem of link scheduling and cooperative interference forwarding (LSCIF) as a mixed integer non-linear program (MINLP) that is solved numerically. In the proposed problem formulation the aggregate signal-to-interference ratio (SIR) expression is decomposed into two separate SIR constraints. In practice this means that the signal that is received at a relay is allowed to be forwarded (the relay link is scheduled) even if the SIR of this particular signal is below the level that the final receiver can decode. Results are presented for the optimal solution and a polynomial time approximation algorithm for different traffic loads, number of relays, and demonstrate significant performance gains.
Starting Page	6222
Ending Page	6227
File Size	367603
Page Count	6
File Format	PDF
e-ISBN	9781467364324
DOI	10.1109/ICC.2015.7249315
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-06-08
Publisher Place	UK
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Relays Interference Throughput Wireless networks Signal to noise ratio Protocols Approximation methods
Content Type	Text
Resource Type	Article

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

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