Symmetry/Asymmetry in Wireless Communications and Signal Processing

Dear Colleagues,

Wireless communication systems and signal processing techniques play a fundamental role in modern networks, in which the concepts of symmetry and asymmetry influence performance, resource allocation, and overall system design. Symmetry in wireless communications can manifest in balanced spectrum usage, equal power distribution, and uniform network structures, leading to simplified modeling and efficient optimization. Conversely, asymmetry arises in real-world scenarios due to heterogeneous network topologies, diverse channel conditions, and varying user requirements, introducing new challenges and opportunities in system design.

The interplay between symmetry and asymmetry fundamentally shapes wireless network functions, including channel estimation, interference management, adaptive modulation, and security protocols. For instance, time-division duplexing systems take advantage of symmetric uplink and downlink channel conditions, whereas frequency-division duplexing systems experience significant differences between uplink and downlink channels, resulting in asymmetry in channel estimation and feedback. Understanding and exploiting these characteristics can significantly improve network performance and simplify implementation.

This Special Issue will explore the latest advancements at the intersection of symmetry/asymmetry and wireless communications, highlighting novel theoretical frameworks, innovative algorithms, and practical system implementations. We welcome original research contributions that address key challenges and propose new solutions across a wide range of applications.

Potential topics include (but are not limited to) the following:

• Symmetry-based modeling for wireless networks and signal processing algorithms;
• Asymmetry-aware resource allocation in heterogeneous wireless environments;
• Beamforming and MIMO techniques exploiting symmetrical antenna structures;
• Adaptive modulation and coding schemes for asymmetric channel conditions;
• Machine-learning-driven approaches to optimizing symmetric/asymmetric network operations;
• Energy efficiency and power control strategies in asymmetric network deployments;
• Security and privacy mechanisms leveraging symmetrical cryptographic principles;
• Spectrum sharing and coexistence techniques in asymmetric multi-tier networks;
• Real-world case studies and experimental validation of symmetry/asymmetry-driven wireless solutions.

By addressing the fundamental and applied aspects of symmetry and asymmetry, this Special Issue will advance the field of wireless communication and signal processing, bridging theoretical insights and practical implementations. We invite researchers from academia and industry to contribute their latest findings and innovative ideas.

We look forward to receiving your contributions.

Dr. Diluka Galappaththige
Dr. Dhanushka Priyankara Kudathanthirige
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Symmetry is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

• symmetric and asymmetric wireless networks
• MIMO and beamforming optimization
• adaptive resource allocation
• spectrum sharing and coexistence
• machine learning for wireless networks
• full-duplex communication
• interference management strategies
• security and privacy in wireless systems
• signal processing for asymmetric channels
• heterogeneous network optimization