Available on ORBilu since
03 February 2023
Article (Scientific journals)
Ambient backcom in beyond 5G NOMA networks: A multi-cell resource allocation framework
Khan, Wali Ullah; Memon, Fida Hussain; Dev, Kapal et al.
2022In Digital Communications and Networks
Peer Reviewed verified by ORBi


Full Text
Publisher postprint (1.33 MB)

All documents in ORBilu are protected by a user license.

Send to


Keywords :
Backscatter Communications; Non-orthogonal Multiple Access; Resource Allocation
Abstract :
[en] The research of Non-Orthogonal Multiple Access (NOMA) is extensively used to improve the capacity of networks beyond the fifth-generation. The recent merger of NOMA with ambient Backscatter Communication (BackCom), though opening new possibilities for massive connectivity, poses several challenges in dense wireless networks. One of such challenges is the performance degradation of ambient BackCom in multi-cell NOMA networks under the effect of inter-cell interference. Driven by providing an efficient solution to the issue, this article proposes a new resource allocation framework that uses a duality theory approach. Specifically, the sum rate of the multi-cell network with backscatter tags and NOMA user equipments is maximized by formulating a joint optimization problem. To find the efficient base station transmit power and backscatter reflection coefficient in each cell, the original problem is first divided into two subproblems, and then the closed form solution is derived. A comparison with the Orthogonal Multiple Access (OMA) ambient BackCom and pure NOMA transmission has been provided. Simulation results of the proposed NOMA ambient BackCom indicate a significant improvement over the OMA ambient BackCom and pure NOMA in terms of sum-rate gains.
Disciplines :
Electrical & electronics engineering
Author, co-author :
Khan, Wali Ullah ;  University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > SigCom
Memon, Fida Hussain
Dev, Kapal
Javed, Muhammad Awais
Do, Dinh-Thuan
Qureshi, Nawab Muhammad Faseeh
External co-authors :
Language :
Title :
Ambient backcom in beyond 5G NOMA networks: A multi-cell resource allocation framework
Alternative titles :
[en] Ambient backcom in beyond 5G NOMA networks: A multi-cell resource allocation framework
Publication date :
November 2022
Journal title :
Digital Communications and Networks
Publisher :
Elsevier, Amsterdam, Netherlands
Peer reviewed :
Peer Reviewed verified by ORBi
Focus Area :
Security, Reliability and Trust


Number of views
5 (0 by Unilu)
Number of downloads
20 (0 by Unilu)

Scopus citations®
Scopus citations®
without self-citations
WoS citations


Similar publications

Contact ORBilu