Communications

In a world first, researchers at Nagoya University in Japan have successfully developed a resonant tunnel diode (RTD) that operates at room temperature made entirely from Group IV semiconductor materials.... Read more

Optical signal transmission can be significantly improved by limiting the wavelength of transmitted signals. Fiber Bragg grating (FBG) is a technique widely used in optical communication, sensing, and laser technologies for selectively blocking certain wavelengths of light. In optical fibers, FBG functions as a band-rejection filter that reflects specific light... Read more

Apple's unveiling of the latest batch of iPhones yesterday may have grabbed much of the attention, but the satellite messaging added to the Apple Watch Ultra 3 is an engineering marvel, says a Northeastern University expert.... Read more

Potholes could be a thing of the past, after a team of Monash engineers found a way to use smartphones to monitor roads—a cheaper, quicker alternative to Australia's current road survey methods.... Read more

A ship likely cut cables in the Red Sea that disrupted internet access in Africa, Asia and the Middle East, experts said Tuesday, showing the lines' vulnerability over a year after another incident severed them.... Read more

Elon Musk's SpaceX has reached a deal worth about $17 billion with EchoStar for spectrum licenses that it will use to beef up its Starlink satellite network.... Read more

Undersea cable cuts in the Red Sea disrupted internet access in parts of Asia and the Middle East, experts said Sunday, though it wasn't immediately clear what caused the incident.... Read more

Researchers at Skoltech have presented new generalized LDPC codes (Generalized Low-Density Parity-Check Codes, GLDPC)—a practical solution that operates faster than modern solutions from the 5G standard while maintaining the original reliability of data transmission. Such codes are particularly important for designing next-generation wireless systems, where minimizing latency and ensuring reliable... Read more

On Sunday, a plane carrying European Union chief Ursula von der Leyen was reportedly forced to land in Bulgaria using paper maps after its GPS navigation systems were jammed. Bulgarian authorities claim the jamming was deliberate Russian interference, though a Kremlin spokesperson told the Financial Times this was "incorrect."... Read more

For the first time, Korean researchers have successfully demonstrated a 6G hyper-space communication technology that integrates terrestrial and satellite networks. As a core infrastructure for the future 6G era, it is being evaluated as a green light for securing the lead in 6G international standardization.... Read more

The U.S. Naval Research Laboratory in conjunction with the Marine Corps Expeditionary Energy Office (E2O); the Operational Energy Capability Improvement Fund with the Office of the Assistant Secretary of Defense for Energy, Installations, and Environment; Aerostar; and Lockheed Martin conducted a technical demonstration held at Outlying Landing Field Seagle in... Read more

Cell-free (CF) MIMO networks are emerging as a key B5G/6G technology for improved connectivity, spectral efficiency, and service quality. A recent study proposes a novel CF-MIMO signal detector that can reduce energy consumption by up to 58%.... Read more

In recent decades, communication technology has advanced at unprecedented speed. A key breakthrough is semantic communications—a shift from transmitting raw data to conveying semantic meaning. For example, in image transmission, meaning takes priority over pixel-level accuracy. By integrating user tasks into the communication process, semantic communications improve both efficiency and... Read more

AT&T will spend $23 billion to acquire certain wireless spectrum licenses from EchoStar, a significant expansion of AT&T's low- and mid-band coverage networks.... Read more

NEC Corporation has developed an optical fiber sensing technology to monitor road conditions and accurately predict sudden traffic congestion in real time. By collecting data from existing optical fiber communications cables and analyzing real-time traffic flow data using a proprietary AI model, the researchers have reduced prediction errors by 80%... Read more

Addressing a major roadblock in next-generation photonic computing and signal processing systems, researchers at the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS) have created a device that can bridge digital electronic signals and analog light signals in one fluid step.... Read more

Electronics and Telecommunications Research Institute (ETRI) has successfully demonstrated a 200 Gbps 6G wireless link using a proof-of-concept (PoC) system developed late last year. The 6G system developed by ETRI uses an ultra-wide bandwidth of 10 GHz around 160 GHz in the sub-terahertz (sub-THz) band.... Read more

Researchers at King Abdullah University of Science and Technology (KAUST) have provided a new mathematical approach to protect aircraft from interference caused by mobile communications. The solution, published in IEEE Transactions on Wireless Communications, describes the shape of the ideal exclusion zone that protects aircraft while maximizing 5G performance. This... Read more

The Korea Research Institute of Standards and Science has successfully localized core radar stealth technologies through indigenous development, without reliance on foreign technologies. This achievement is a significant milestone, laying the foundation for the establishment of stealth weapon systems in Korea, which have long been difficult to import due to... Read more

A newly published paper by Dr. Asaf Tzachor, Dean of Reichman University's School of Sustainability, warns that the backbone of our global internet infrastructure—submarine communication cables—is dangerously vulnerable to both natural disasters and deliberate sabotage, posing systemic risks to international communication, commerce, and security.... Read more

MIT researchers have developed a reconfigurable antenna that dynamically adjusts its frequency range by changing its physical shape, making it more versatile for communications and sensing than static antennas.... Read more

High frequency radio waves can wirelessly carry the vast amount of data demanded by emerging technology like virtual reality, but as engineers push into the upper reaches of the radio spectrum, they are hitting walls. Literally.... Read more

A US military spaceplane, the X-37B orbital test vehicle, is due to embark on its eighth flight into space on August 21, 2025. Much of what the X-37B does in space is secret. But it serves partly as a platform for cutting-edge experiments.... Read more

AOL's dial-up internet is finally taking its last bow.... Read more

With digital devices powering every aspect of life and business, telecommunications providers are going neck and neck to provide faster internet speeds at scale―using fiber technology as a linchpin.... Read more

Wireless power transfer (WPT) systems transmit electrical energy from a power source to a load without physical connectors or wires, using electromagnetic fields. This idea goes as far back as the 1890s, when Nikola Tesla famously experimented with wireless energy transmission.... Read more

Researchers at EPFL and Harvard University have engineered a chip that can convert between electromagnetic pulses in the terahertz and optical ranges on the same device. Their integrated design could enable the development of devices for ultrafast telecommunications, ranging, spectroscopy, and computing.... Read more

Smartphones must stay connected to mobile networks at all times to function properly. The core component that enables this constant connectivity is the communication modem (baseband) inside the device. KAIST researchers, using their self-developed testing framework called LLFuzz (Lower Layer Fuzz), have discovered security vulnerabilities in the lower layers of... Read more

Researchers from IMDEA Networks, in collaboration with Universidad Carlos III de Madrid, IMDEA Software Institute, and the University of Calgary, have conducted the first large-scale study—"Your Signal, Their Data: An Empirical Privacy Analysis of Wireless-scanning SDKs in Android"—on how certain Android mobile applications use a device's WiFi and Bluetooth connections... Read more

Southwest Research Institute (SwRI) is expanding its antenna measurement capabilities with a state-of-the-art spherical near-field antenna range. The 1,260-square-foot indoor range, lined with radio frequency and microwave foam absorbers, is equipped to accurately sample the near field of an antenna. Near-field measurements can be mathematically transformed into far-field data.... Read more

Hi-tech surveillance technologies are a double-edged sword. On the one hand, you want sophisticated devices to detect suspicious behavior and alert authorities. But on the other, there is the need to protect individual privacy. Balancing public safety and personal freedoms is an ongoing challenge for innovators and policymakers.... Read more

The development of more advanced technologies to process radiofrequency signals could further advance wireless communication, allowing devices connected to the internet to share information with each other faster and while consuming less energy. Currently, radio frequency signals are processed using software-defined radios (SDRs), systems that can modulate, filter and analyze... Read more

Up to now, underwater navigation for divers has been limited primarily to orientation at distinctive points or compass navigation. Although there are concepts that, similar to a sonar, are intended to enable position determination using acoustic signal sources, these require a high sound pressure level. This affects the ecosystem and... Read more

In wireless communication, spectrum—radio frequencies that allow devices to communicate over the air—is king.... Read more

Analog repeaters dramatically enhance millimeter-wave (mmWave) coverage in mobile networks by overcoming signal blockage, report researchers from Science Tokyo. As demonstrated in a field experiment at Ookayama Campus, low-cost repeaters connected either wirelessly or via optical fiber offer a promising solution for 5G and 6G networks. Both configurations achieved over... Read more

Just because Elon Musk and Jeff Bezos aren't the best of friends, and Amazon's Project Kuiper will directly compete with SpaceX's Starlink satellites for broadband internet, doesn't mean everyone can't still get along.... Read more

Terahertz frequencies above 100 GHz offer extremely wide bandwidths suitable for next-generation wireless communications, and research toward their practical use is ongoing worldwide. In particular, the 150 GHz and 300 GHz bands are actively being studied in Japan due to their relatively low atmospheric attenuation, which enables stable signal propagation.... Read more

A research team affiliated with UNIST has unveiled a new semiconductor device optimized for the next-generation 6G era and autonomous driving, offering low power consumption and nonvolatile operation. This innovative device can also be integrated into variable filter circuits capable of tuning the central frequency band, paving the way for... Read more

Countries have come to rely on a network of cables and pipes under the sea for their energy and communications. So it has been worrying to read headlines about communications cables being cut and, in one case, an undersea gas pipeline being blown up.... Read more

Imagine a world where every smart device, from traffic sensors to wearable health monitors, can seamlessly communicate. This vision is at the heart of Massive Machine Type Communication (mMTC), a cornerstone of 5G and future 6G mobile networks.... Read more

Deep in Martu Country, the Rawa Community School has a new addition. Perched on the roof is a squat, sealed rectangle. Curved underneath, flat on top and angled toward the sky, it's a sight becoming increasingly familiar in regional Australia: Starlink.... Read more

Li-Fi (Light Fidelity) is a wireless communication technology that utilizes the visible light spectrum (400–800 THz), similar to LED light, offering speeds up to 100 times faster than existing Wi-Fi (up to 224 Gbps). While it has fewer limitations in available frequency allocation and less radio interference, it is relatively... Read more

The QUICK³ nano satellite will test components for future quantum satellite systems. The goal is to enable rapid and secure communication using quantum technology. Developed by a research consortium led by TUM professor Tobias Vogl, the satellite was launched into orbit on Monday, June 23, with a booster rocket from... Read more

In recent days, Iranians experienced a near-complete internet blackout, with local service providers—including mobile services—repeatedly going offline. Iran's government has cited cybersecurity concerns for ordering the shutdown.... Read more

United Launch Alliance took a week to reset, but was able to send up its second launch of the year, another mission for Amazon's effort to compete with SpaceX's Starlink internet constellation. The launch came just hours after SpaceX sent up its 50th rocket from the Space Coast this year.... Read more

From smart grids to the internet of things, the modern world is increasingly reliant on connectivity between electronic devices. Thanks to University of Ottawa researchers, these devices can now be simultaneously connected and powered with a simple optical fiber over long distances, even in the harshest environments.... Read more

A novel time-division MIMO technology enables phased-array receivers to operate faster with exceptional area efficiency and low power, as reported by researchers from the Institute of Science Tokyo. The proposed system significantly reduces circuit complexity for 5G and 6G networks, including non-terrestrial nodes, by reusing signal paths through fast switching.... Read more

Earlier today, Iranian officials urged the country's citizens to remove the messaging platform WhatsApp from their smartphones. Without providing any supporting evidence, they alleged the app gathers user information to send to Israel.... Read more

Number 1519 Connecticut Avenue lies just north of Dupont Circle, just over a 20-minute walk from the White House in Washington DC. In 1921, the inventor Charles Francis Jenkins set up his laboratory and offices there, upstairs from a car dealership.... Read more

Imec researchers have set a new benchmark in RF transistor performance for mobile applications. They present a gallium nitride (GaN) MOSHEMT (metal-oxide-semiconductor high-electron-mobility transistor) on silicon (Si) that achieves both record efficiency and output power for an enhancement-mode (E-mode) device operating at low supply voltage.... Read more