Improper Gaussian Signaling and Asymmetric Discrete Constellations for Future Communication Networks

  • 1,231

    Total Downloads

  • 6,885

    Total Views and Downloads

Submit your idea

Select the journal/section where you want your idea to be submitted:

Submit your manuscript summarySubmit your manuscript

About this Research Topic

Submission closed

Background

Signals are used to quantify real-world physical quantities in science and engineering and ex-change information in communication networks. Hence, studying and analyzing related systems requires appropriate signal and system modeling to understand the theoretical performance and design suitable practical systems. Theoretical statistical studies adopt mostly complex symmetrical (proper) Gaussian distribution as a convenient model for analysis with simplified computations thanks to its uncorrelated equal power components. An important step to move closer to the actual physical quantities data is done by dealing with complex asymmetric (improper) Gaussian signals, which relax the proper Gaussian signal assumptions and include the symmetric (proper) Gaussian signal as a special case.

Similar to data analysis, communication systems also used proper signals motivated by the associated optimal performance in point-to-point interference-free communication systems and the mathematical tractability. Nowadays, we are witnessing a tremendous growth of information ex-change and network deployments due to the continual increase of ubiquitous high-speed communication network requirements. Hence, it is imperative to spend generous efforts and rethink innovative solutions to boost the communication system performance. Adopting improper Gaussian signaling is a promising technique that has recently demonstrated significant performance improvement for several network configurations, such as multiuser interference networks. Also, it provides accurate models for communication systems that cause/suffer from signal imbalance. The realization of practical systems that can meet the theoretical performance can be achieved by appropriate design of adaptive asymmetrical discrete constellations. Designing new families of discrete constellations can be done by asymmetric signaling in time, space, stochastic and geometrical domains. In regards to system implementations, it is necessary to develop appropriate signal processing schemes that are compatible with systems dealing with improper (asymmetric) signals. Specifically, several signal processing domains should be considered, such as estimation, detection, system identification, feature extraction, pattern recognition etc.

This special issue is devoted to studying the theoretical impact of improper Gaussian signaling on communication networks based on fundamental information theory studies, and realize practical systems using asymmetric discrete constellation based on appropriate signal processing techniques. High-quality technical paper submissions reporting on original algorithmic, theoretical, numerical, and experimental results are welcome. Exceptional survey/tutorial-like papers may also be considered.

The themes of interest include, but are not limited to:

• Improper and asymmetric signals in communication networks: cellular networks, cognitive radios, device-to-device communications, full-duplex systems etc.
• Interference management techniques using improper and asymmetric signals.
• Improper and asymmetric signals for physical layer security systems.
• Inherent and imposed impropriety in communication systems, such as hardware impairments and mitigation techniques.
• Widely linear signal processing for asymmetric signaling such as: equalization, estimation, filtering, precoding, detection etc.
• Improper Gaussian signals in non-orthogonal multiple access systems.
• Asymmetric discrete constellation design: probabilistic shaping, geometric shaping, asymmetric time-sharing and hybrid shaping schemes.
• Multi-agent distributed systems with improper and asymmetric signals.
• Asymmetric constellation design via machine learning techniques.
• Resource allocation for multiple users employing asymmetric signaling in communications networks.
• Cross-layer design for communication networks operating with asymmetric signals
• Asymmetric signals and reconfigurable intelligent surfaces for communication networks
• Caching and asymmetric signaling in communication networks
• Asymmetric signal experimental testbed and improper signal measurements.

Keywords: Improper Gaussian signaling, Asymmetric discrete constellations, Wireless networks, Widely linear processing, Data analysis

Important note: All contributions to this Research Topic must be within the scope of the section and journal to which they are submitted, as defined in their mission statements. Frontiers reserves the right to guide an out-of-scope manuscript to a more suitable section or journal at any stage of peer review.

Topic editors

Frequently asked questions

  • Frontiers' Research Topics are collaborative hubs built around an emerging theme.Defined, managed, and led by renowned researchers, they bring communities together around a shared area of interest to stimulate collaboration and innovation.

    Unlike section journals, which serve established specialty communities, Research Topics are pioneer hubs, responding to the evolving scientific landscape and catering to new communities.

  • The goal of Frontiers' publishing program is to empower research communities to actively steer the course of scientific publishing. Our program was implemented as a three-part unit with fixed field journals, flexible specialty sections, and dynamically emerging Research Topics, connecting communities of different sizes and maturity.

    Research Topics originate from the scientific community. Many of our Research Topics are suggested by existing editorial board members who have identified critical challenges or areas of interest in their field.

  • As an editor, Research Topics will help you build your journal, as well as your community, around emerging, cutting-edge research. As research trailblazers, Research Topics attract high-quality submissions from leading experts all over the world.

    A thriving Research Topic can potentially evolve into a new specialty section if there is sustained interest and a growing community around it.

  • Each Research Topic must be approved by the specialty chief editor, and they fall under the editorial oversight of our editorial boards, supported by our in-house research integrity team. The same standards and rigorous peer review processes apply to articles published as part of a Research Topic as for any other article we publish.

      In 2023, 80% of the Research Topics we published were edited or co-edited by our editorial board members, who are already familiar with their journal's scope, ethos, and publishing model. All other topics are guest edited by leaders in their field, each vetted and formally approved by the specialty chief editor.

  • Publishing your article within a Research Topic with other related articles increases its discoverability and visibility, which can lead to more views, downloads, and citations. Research Topics grow dynamically as more published articles are added, causing frequent revisiting, and further visibility.

    As Research Topics are multidisciplinary, they are cross-listed in several fields and section journals – increasing your reach even more and giving you the chance to expand your network and collaborate with researchers in different fields, all focusing on expanding knowledge around the same important topic.

    Our larger Research Topics are also converted into ebooks and receive social media promotion from our digital marketing team.

     

  • Frontiers offers multiple article types, but it will depend on the field and section journals in which the Research Topic will be featured. The available article types for a Research Topic will appear in the drop-down menu during the submission process.

    Check available article types here 

  • Yes, we would love to hear your ideas for a topic. Most of our Research Topics are community-led and suggested by researchers in the field. Our in-house editorial team will contact you to talk about your idea and whether you’d like to edit the topic. If you’re an early-stage researcher, we will offer you the opportunity to coordinate your topic, with the support of a senior researcher as the topic editor. 

    Suggest your topic here 

  • A team of guest editors (called topic editors) lead their Research Topic. This editorial team oversees the entire process, from the initial topic proposal to calls for participation, the peer review, and final publications.

    The team may also include topic coordinators, who help the topic editors send calls for participation, liaise with topic editors on abstracts, and support contributing authors. In some cases, they can also be assigned as reviewers.

  • As a topic editor (TE), you will take the lead on all editorial decisions for the Research Topic, starting with defining its scope. This allows you to curate research around a topic that interests you, bring together different perspectives from leading researchers across different fields and shape the future of your field. 

     

    You will choose your team of co-editors, curate a list of potential authors, send calls for participation and oversee the peer review process, accepting or recommending rejection for each manuscript submitted.

  • As a topic editor, you're supported at every stage by our in-house team. You will be assigned a single point of contact to help you on both editorial and technical matters. Your topic is managed through our user-friendly online platform, and the peer review process is supported by our industry-first AI review assistant (AIRA).

  • If you’re an early-stage researcher, we will offer you the opportunity to coordinate your topic, with the support of a senior researcher as the topic editor. This provides you with valuable editorial experience, improving your ability to critically evaluate research articles and enhancing your understanding of the quality standards and requirements for scientific publishing, as well as the opportunity to discover new research in your field, and expand your professional network.

  • Yes, certificates can be issued on request. We are happy to provide a certificate for your contribution to editing a successful Research Topic.

  • Research Topics thrive on collaboration and their multi-disciplinary approach around emerging, cutting-edge themes, attract leading researchers from all over the world.

  • As a topic editor, you can set the timeline for your Research Topic, and we will work with you at your pace. Typically, Research Topics are online and open for submissions within a few weeks and remain open for participation for 6 – 12 months. Individual articles within a Research Topic are published as soon as they are ready.

    Find out more about our Research Topics

  • Our fee support program ensures that all articles that pass peer review, including those published in Research Topics, can benefit from open access – regardless of the author's field or funding situation.

    Authors and institutions with insufficient funding can apply for a discount on their publishing fees. A fee support application form is available on our website.

  • In line with our mission to promote healthy lives on a healthy planet, we do not provide printed materials. All our articles and ebooks are available under a CC-BY license, so you can share and print copies.

     

Participating Journals

Impact

  • 6,885Topic views
  • 4,103Article views
  • 1,231Article downloads
View impact