Index Modulation for 6G Communications

  • 2,661

    Total downloads

  • 15k

    Total views and downloads

About this Research Topic

Submission closed

Background

Over the past decades there has been a tremendous increases in data throughput and the number of connected nodes, with recent studies foreboding these increases in next generation networks. These tremendous increases will undoubtedly result in increasingly stringent requirements of spectral efficiency and energy efficiency. In recent years, index modulation has attracted researchers' attention as a means of meeting these two requirements. Different from conventional amplitude-phase modulation schemes, index modulation employs one or more index domain(s) in addition to the classic amplitude-phase constellation diagram. Therefore, index modulation offers a means to form a higher-dimensional modulation scheme, which considerably enhances the spectral efficiency under proper system configurations. By index modulation, only a subset of transmit antennas/orthogonal subcarriers/time slots will be activated to form a unique activation pattern. Consequently, the index of activation pattern can be used to modulate extra bit stream, in addition to the bit stream modulated by data constellation symbols. As a young-born paradigm, there are still a large number of open research questions awaiting solutions and further research activities are of high importance to finally promote index modulation to the practical stage. Apart from theoretical research, the concerns of practical implementation need to be addressed. In light of the aforementioned advantages of applying index modulation for 6G communications, as well as the remaining research problems, we propose this Research Topic to attract original and high-quality publications addressing the theoretical and practical issues related to index modulation.

All types of manuscripts accepted for submission to Frontiers in Communications and Networks are welcome, including Original Research, Systematic Review, Methods, Technology Report, and so on (details can be found at https://www.frontiersin.org/journals/communications-and-networks#article-types). The particular topics of interest include but are not limited to the following:

• Artificial intelligence and learning techniques assisted index modulation
• Massive MIMO and reconfigurable intelligent surface (RIS) assisted index modulation
• Index modulation in millimeter-wave, terahertz and optical wireless communications
• Index modulation for underwater optical/acoustic communications
• Distance-aware and space-frequency-correlated index modulation
• Index modulation with high mobility
• Physical security and secrecy related issues of index modulation
• Index modulation in multi-user and cooperative relay networks
• Performance analysis for index modulation based communication systems
• Resource allocation and optimization for index modulation based communication systems
• Detection and transceiver designs for index modulation
• Index modulation aided interference mitigation techniques
• Pilot designs and channel estimation techniques for index modulation
• Network architecture designs for index modulation
• Signal processing techniques for index modulation
• Novel index modulation bit-to-pattern mapping relation designs
• Index modulation aided non-orthogonal multiple access, energy harvesting, and cognitive radio schemes
• Emerging applications of index modulation
• Implementation challenges and future research directions of index modulation

Keywords: Index modulation, Spatial modulation, Media-based modulation, Sparsity modulation, 6G communications

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.

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 it falls 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.