MagNet—A Data‐Science Competition to Predict Disturbance Storm‐Time Index (Dst) From Solar Wind Data by Manoj Nair, Rob Redmon, Li‐Yin Young, Arnaud Chulliat, Belinda Trotta, Christine Chung, Greg Lipstein, Isaac Slavitt

“…Abstract Enhanced interaction between solar‐wind and Earth's magnetosphere can cause space weather and geomagnetic storms that have the potential to damage critical technologies, such as magnetic navigation, radio communications, and power grids. The severity of a geomagnetic storm is measured using the disturbance‐storm‐time (Dst) index. …”
Get full text

Ionospheric Storm Scale Index Based on High Time Resolution UPC‐IonSAT Global Ionospheric Maps (IsUG) by Qi Liu, Manuel Hernández‐Pajares, Haixia Lyu, Michi Nishioka, Heng Yang, Enric Monte‐Moreno, Tamara Gulyaeva, Yannick Béniguel, Volker Wilken, Germán Olivares‐Pulido, Raül Orús‐Pérez

“…Abstract The ionospheric storms have adverse effects on the radio communications, satellite communications and also the Global Navigation Satellite Systems (GNSS) application. …”
Get full text

The Sanya Incoherent Scatter Radar Tristatic System and Initial Experiments by Xinan Yue, Baiqi Ning, Lin Jin, Feng Ding, Changhai Ke, Junyi Wang, Ning Zhang, Yihui Cai, Mingyuan Li, Junhao Luo, Weiping Chen, Yunxia Zhang, Biqiang Zhao, Lingqi Zeng, Yonghui Wang

“…Abstract Low latitude ionosphere experiences complex dynamical and electrodynamical processes, which make the spatiotemporal variations of the corresponding electron density complicated and therefore influence trans‐ionosphere radio communications. The monitoring of low latitude dynamical drivers, such as neutral wind and ionospheric electric field, is essential for both dynamic mechanism investigations and applications. …”
Get full text

Alternative Approach for Combination of Fingers in Underwater Acoustic Communication by Ji-Hong Son, Eun-Hye Jeon, Ki-Man Kim, Dong-Won Lee, Tae-Doo Park

Get full text

Textile UWB Antenna Bending and Wet Performances by Mai A. R. Osman, M. K. A. Rahim, N. A. Samsuri, M. K. Elbasheer, M. E. Ali

Get full text

Evaluation of Selected Modulation Techniques in Underwater Multipath Channel by Agnieszka Czapiewska, Andrzej Luksza, Ryszard Studanski, Lukasz Wojewodka, Andrzej Zak

“…Nevertheless, it is worth to analyze if solutions known from radio communication systems are applicable for underwater hydroacoustic purposes. …”
Get full text

Doppler Estimation Based on Frequency Average and Remodulation for Underwater Acoustic Communication by Chan-Ho Hwang, Ki-Man Kim, Seung-Yong Chun, Sang-Kook Lee

Get full text

An Approach for Self-Adaptive Path Loss Modelling for Positioning in Underground Environments by Evgeny Osipov, Denis Kleyko, Alexey Shapin

“…This paper proposes a real-time self-adaptive approach for accurate path loss estimation in underground mines or tunnels based on signal strength measurements from heterogeneous radio communication technologies. The proposed model features simplicity of implementation. …”
Get full text

A look at 5G and future mobile communication development trend from the point of WRC-19 agenda items by Jian FANG, Ying ZHU, Na ZHENG, Pengpeng LI

“…Firstly，global 5G development status was outlined.And the relationship between world radio communication conference（WRC）and mobile communication development was introduced.Based on the application scenarios in the ITU-R recommendation of 5G visions，two important 5G scenarios，mobile internet and internet of things were analyzed.Then those WRC-19 agenda items which related to 5G were sorted out combined with the results of WRC-15.The background and core tasks were illustrated.Finally，the global technology and spectrum status of research were summarized and the future study tendency was pointed out.…”
Get full text

Adaptive co-site interference cancellation algorithm with multiple virtual references by Yue-lei XIE, Jie LIU, Min-zheng LI, Shan OUYANG, Gui-sheng LIAO

“…Wireless radio communication is usually deteriorated by co-site interferences produced by collocated transmitters.A two-stage adaptive filter with multiple virtual references that drew from over sampled receiving signal is proposed to cancel the co-site interferences.Co-site interferences can be cancelled and the desired signal can be recovered by adjusting the weights of the first filter when pure interferences are received and adjusting the weights of the second filter when the desired signal is consisted in received signals.The simulation results show that the proposed adaptive co-site interferences cancellation algorithm without the coupling device can achieve better performance than traditional algorithms.…”
Get full text

Future Use of the Terrestric Broadcasting Spectrum below 700 MHz from 2031 Onwards by Torsten J. Gerpott

“…In Germany, three stakeholder groups (1) broadcasters and programme and special events managers, (2) public mobile radio communication providers, (3) public protection, disaster relief and military defense organisations currently argue for a primary or co-primary allocation of this scarce radio spectrum for their applications. …”
Get full text

Pseudo chaotic pulse position modulation in UWB communications by XIANG Xin1, WANG Jie-ling2, ZENG Zhi-bin2, YI Ke-chu2, CHEN Shun-fang3

“…A novel pseudo chaotic pulse position modulation（PCPPM） was proposed which was suitable for ultrawide-bandwith impulse radio communication systems,in this scheme,symbolic dynamics of a chaotic map was used for chaotic pulse position modulation（CPPM）,the separation between the adjacent pulses were determined by chaotic dynamics and binary information was modulated onto this carrier by the pulse position modulation method.System could acquire synchronization automatically without any specific "hand shaking"protocol.The advantages of PCPPM are decrease of the measurement precision of interpulse intervals and suitable for all digital solution.Since a random distribution of interpulse intervals,the resulting spectrum is a noise like spectrum.Finally,the performances of PCPPM were analyzed and simulated.…”
Get full text

A Three-Component Model Based on Macropropagation Phenomena Approach for Complex Building Scattering by Mehdi Ait-Ighil, Fernando Perez-Fontan, Joel Lemorton, Frederic Lacoste, Christophe Bourga, Michel Bousquet

Get full text

Research Progress in Methods to Estimate High-resolution Direction of Arrival by Wei ZHAO, Xuan LI, Chengpeng HAO

“…The research in this paper can be applied to modern radar/sonar detection, radio communication, and navigation, showing high application value.…”
Get full text

Science Before Dinner: Science popularization in Francoist Spain through the Los Progresos Científicos Broadcast by Boleda Jordi Ferran

“…Vidal Españó conducted science radio talks on Radio Barcelona from 1924 until the late 1960s, particularly in his show Los Progresos Científicos (the Scientific Advances), which broke the typical one-way radio communication, establishing a dynamic relationship with his audience. …”
Get full text

Modelling and Design of HF RFID Passive Transponders with Additional Energy Harvester by Piotr Jankowski-Mihułowicz, Włodzimierz Kalita, Mariusz Skoczylas, Mariusz Węglarski

“…This power source is used to conduct radio-communication process and excess energy could be used to power the extra electronic circuits, but the problem is to determine the additional power load impact on the RFID system proper operation and size of interrogation zone. …”
Get full text

A Novel Audio Cryptosystem Using Chaotic Maps and DNA Encoding by S. J. Sheela, K. V. Suresh, Deepaknath Tandur

“…The various types of analysis revealed that the algorithm is suitable for narrow band radio communication and real-time speech encryption applications.…”
Get full text

Statistical Study on the Effect of Meridional Neutral Wind on the Occurrence of Post‐Sunset Equatorial Ionospheric Irregularities by Bantayehu Aderaw, Melessew Nigussie

“…Abstract The navigation and radio communication systems experience significant disruptions due to post‐sunset equatorial ionospheric irregularities. …”
Get full text

Propagation Mechanism Modeling in the Near-Region of Arbitrary Cross-Sectional Tunnels by Ke Guan, Zhangdui Zhong, Bo Ai, Ruisi He, Yuanxuan Li, César Briso Rodríguez

“…Along with the increase of the use of working frequencies in advanced radio communication systems, the near-region inside tunnels lengthens considerably and even occupies the whole propagation cell or the entire length of some short tunnels. …”
Get full text

Resource Assignment Algorithms for Autonomous Mobile Robots with Task Offloading by Giuseppe Baruffa, Luca Rugini

“…The mobile robots also need reliable and efficient radio communication with the network hosting edge/cloud servers. …”
Get full text