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Publication – A simplified approach for enhanced connectivity in future networks

Funded by : VistaMilk SFI Research Centre

Posted: 27-07-2022

Author: Muhammad Zeeshan

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    Outline the paper

    This publication focuses on developing a cooperative communication framework with a minimal number of relaying nodes to enhance connectivity in a Non-orthogonal multiple access (NOMA) scheme. We have developed a hybrid decode and amplify forward approach based on underlying channel conditions. The proposed algorithm selects a minimal set of relay nodes to reduce implementation complexity without compromising the reliability of the network.

    Modern wireless networks must support a large number of users by ensuring low latency, high data rates, and reduced costs compared to existing networks. Current radio access technologies have a hard limit on the number of supported users. Therefore, an alternative radio access scheme with network scalability is highly desired. NOMA is a promising solution to this problem, as it provides increased user fairness and scalability to support a large number of sensors and devices in modern wireless networks. To provide seamless connectivity, cooperative communication – in which network users cooperate with each other to increase the network range – is common in wireless communications. The problem with this approach is the computational complexity, with a rise in communication delays, as the number of cooperating nodes increase. To overcome this issue, we have proposed a scheme that selects the minimum possible number of relaying nodes for cooperation without sacrificing network reliability. We have applied the proposed approach to a multi-input multi-output scenario along with a hybrid decode/amplify forward approach.

    A cooperative communication framework with a minimal number of relaying nodes to enhance connectivity in a Non-orthogonal multiple access (NOMA) scheme

    Who will it help?

    This proposed research finds many applications in real-world scenarios including beyond 5G communications, smart farming and precision agriculture, industrial communication networks, drone swarm communication, wearable devices and more. The research approach and solution proposed in this paper is completely generic in terms of its integration into any other communication protocol. Although, we have applied the minimal set selection to NOMA-based communication networks, it can be easily extended to other communication technologies and applications. More specifically, applications that require energy-efficient communication can highly benefit from the proposed technology.

    What is the future of this research?

    This research primarily presents a novel, yet fundamental idea of simplified cooperative communication. There is huge potential for extending this idea to more complicated scenarios. For this purpose, future steps include exploring the viability of this approach in a variety of channel conditions, implementing the scheme on software defined radio platforms, extending the network to a higher number of nodes, applying the scheme to massive multi-input multi-output systems, and integrating it with 5G/6G communication technologies.

    Publication Title: A novel minimal set decode-amplify-forward (MS-DAF) relaying scheme for MIMO-NOMA
    Authors: Muhammad Zeeshan, Mahnoor Ajmal, Muhammad Umar Farooq, Tabinda Ashraf
    Publication Date: 5 April 2022
    Name of Journal: Telecommunication Systems
    Link to publication: https://link.springer.com/content/pdf/10.1007/s11235-022-00894-2.pdf