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Sets of sequences with good correlation properties are desired in many active sensing and communication systems, e.g., multiple-input-multiple-output (MIMO) radar systems and code-division multiple-access (CDMA) cellular systems. In this…

Optimization and Control · Mathematics 2016-05-04 Junxiao Song , Prabhu Babu , Daniel P. Palomar

We present a numerical method for the analysis of mutual coupling effects in large, dense and irregular arrays with identical antennas. Building on the Method of Moments (MoM), our technique employs a Macro Basis Function (MBF) approach for…

Instrumentation and Methods for Astrophysics · Physics 2024-09-04 Quentin Gueuning , Eloy de Lera Acedo , Anthony Keith Brown , Christophe Craeye , Oscar O'Hara

The random access methods used for support of machine-type communications (MTC) in current cellular standards are derivatives of traditional framed slotted ALOHA and therefore do not support high user loads efficiently. Motivated by the…

Information Theory · Computer Science 2012-07-03 Nuno K. Pratas , Henning Thomsen , Cedomir Stefanovic , Petar Popovski

With the versatile manipulation capability, programmable metasurfaces are rapidly advancing in their intelligence, integration, and commercialization levels. However, as the programmable metasurfaces scale up, their control configuration…

Self-orthogonal codes are a subclass of linear codes that are contained within their dual codes. Since self-orthogonal codes are widely used in quantum codes, lattice theory and linear complementary dual (LCD) codes, they have received…

Information Theory · Computer Science 2024-11-12 Yaozong Zhang , Dabin Zheng , Xiaoqiang Wang

Joint Communication and Sensing (JCAS) platforms are emerging as a foundation of next-generation mmWave (MMW) and sub-THz systems, enabling both high-throughput data transfer and angular localization within a shared signal path. This paper…

Signal Processing · Electrical Eng. & Systems 2025-10-16 Najme Ebrahimi , Arun Paidmarri , Alexandra Gallyas-Sanhueza , Yuan Ma , Haoling Li , Basem Abdelaziz Abdelmagid , Tzu-Yuan Huang , Hua Wang

With a view to understanding extended-BMS symmetries in the framework of the $AdS_4/CFT_3$ correspondence, asymptotically AdS geometries are constructed with null impulsive shockwaves involving a discontinuity in superrotation parameters.…

High Energy Physics - Theory · Physics 2021-02-03 David A. Lowe , David M. Ramirez

Imaging of perfectly conducting crack(s) in a 2-D homogeneous medium using boundary data is studied. Based on the singular structure of the Multi-Static Response (MSR) matrix whose elements are normalized by an adequate test function at…

Mathematical Physics · Physics 2013-02-13 Won-Kwang Park , Dominique Lesselier

Orthogonal time frequency space (OTFS) is a promising technology for high-mobility wireless communications. However, the equalization realization in practical OTFS systems is a great challenge when the non-ideal rectangular waveforms are…

Information Theory · Computer Science 2019-11-20 Wenjun Xu , Tingting Zou , Hui Gao , Zhisong Bie , Zhiyong Feng , Zhiguo Ding

This paper presents a coding approach for achieving omnidirectional transmission of certain common signals in massive multi-input multi-output (MIMO) networks such that the received power at any direction in a cell remains constant for any…

Information Theory · Computer Science 2023-01-12 You-Qi Zhao , Cheng-Yu Pai , Zhen-Ming Huang , Zilong Liu , Chao-Yu Chen

Entanglement-assisted quantum error correcting codes (EAQECCs) play a significant role in protecting quantum information from decoherence and quantum noise. Recently, constructing entanglement-assisted quantum maximum distance separable…

Information Theory · Computer Science 2020-09-17 Wan Jiang , Shixin Zhu , Xiaojing Chen

The growing demand for highly reliable communication systems drives the research and development of algorithms that identify and correct errors during data transmission and storage. This need becomes even more critical in hard-to-access or…

Cryptography and Security · Computer Science 2025-04-17 Andrew Rafael Fritsch , César Augusto Missio Marcon

We investigate the coexistence of orthogonal time-frequency space (OTFS) modulation with current fourth- and fifth-generation (4G/5G) communication systems that primarily use orthogonal frequency-division multiplexing (OFDM) waveforms. We…

Signal Processing · Electrical Eng. & Systems 2024-10-23 Akram Shafie , Jinhong Yuan , Paul Fitzpatrick , Taka Sakurai , Yuting Fang

The fundamental concepts and challenges of orthogonal time frequency space (OTFS) modulation have been reviewed in Part I of this three-part tutorial. In this second part, we provide an overview of the state-of-the-art transceiver designs…

Information Theory · Computer Science 2022-09-13 Shuangyang Li , Weijie Yuan , Zhiqiang Wei , Robert Schober , Giuseppe Caire

We fabricate two kinds of 100% fill factor compound eye structures using direct laser writing, including conventional compound eyes (CVCEs) with the same focal length of each microlens unit, and specially designed confocal compound eyes…

Optics · Physics 2022-01-07 Haodong Zhu , Junyu Xia , Yi Huang , Minglong Li , Guangqiang He , Ming Zhao , Zhenyu Yang

In this paper, we propose two novel modulation concepts based on a simple maximum distance separable (MDS) code { and show that these concepts can achieve better error performance than index modulation (IM) and related schemes.} In the…

Signal Processing · Electrical Eng. & Systems 2021-08-11 Ferhat Yarkin , Justin P. Coon

This paper presents an enhanced design of multi-dimensional (MD) constellations which play a pivotal role in many communication systems such as code-domain non-orthogonal multiple access (CD-NOMA). MD constellations are attractive as their…

Information Theory · Computer Science 2022-07-25 Haifeng Wen , Zilong Liu , Qu Luo , Chuang Shi , Pei Xiao

MDS matrices allow to build optimal linear diffusion layers in block ciphers. However, MDS matrices cannot be sparse and usually have a large description, inducing costly software/hardware implementations. Recursive MDS matrices allow to…

Cryptography and Security · Computer Science 2014-12-16 Daniel Augot , Matthieu Finiasz

Orthogonal time frequency space (OTFS) modulation is a recently developed multi-carrier multi-slot transmission scheme for wireless communications in high-mobility environments. In this paper, the error performance of coded OTFS modulation…

Information Theory · Computer Science 2020-10-27 Shuangyang Li , Jinhong Yuan , Weijie Yuan , Zhiqiang Wei , Baoming Bai , Derrick Wing Kwan Ng

The limited modulation bandwidth of the light emitting diodes (LEDs) presents a challenge in the development of practical high-data-rate visible light communication (VLC) systems. In this paper, a novel adaptive coded probabilistic shaping…

Information Theory · Computer Science 2024-02-22 Amanat Kafizov , Ahmed Elzanaty , Mohamed-Slim Alouini