Why are people sending voice messages? Communications expert explains phenomena

Credit: Theo Decker from Pexels Sometimes a text isn’t enough, but a phone or video call would be too much. How about a voice message? Voice messaging has been available on some of the most popular apps for a decade now (it was introduced in WhatsApp and iMessage in 2013 and 2014, respectively), but people […]

NASA’s laser relay system sends pet imagery to and from Space Station

A collage of the pet photos sent over laser links from Earth to LCRD (Laser Communications Relay Demonstration) to ILLUMA-T (Integrated LCRD Low Earth Orbit User Modem and Amplifier Terminal) on the space station. Animals submitted include cats, dogs, birds, chickens, cows, snakes, pigs, and more. Credit: NASA/Dave Ryan Using NASA’s first two-way, end-to-end laser […]

Discovery highlights ‘critical oversight’ in perceived security of wireless networks

A research team led by Rice University’s Edward Knightly has uncovered an eavesdropping security vulnerability in high-frequency and high-speed wireless backhaul links. Credit: Rice University. A research team led by Rice University’s Edward Knightly has uncovered an eavesdropping security vulnerability in high-frequency and high-speed wireless backhaul links, widely employed in critical applications such as 5G […]

A new approach to using neural networks for low-power digital pre-distortion in mmWave systems

Overview of the proposed architecture for digital pre-distortion (DPD), connected in between the baseband layer (BB) and the analog front-end (AFE). The top part operates continuously during transmission, whereas the bottom part is only involved in updating the calibration coefficients. Credit: Ludovico Minati / Tokyo Tech In a study published in the journal IEICE Electronics […]

Deep learning empowers reconfigurable intelligent surfaces in terahertz communication

A: Indoor user equipment receiving signals from the base station (BS) via a reconfigurable intelligent surface (RIS) on a building window. B: Hardware architectures at the base station, reconfigurable intelligent surface, and user equipment. Credit: Yang Wang et al. The escalating demand for wireless data traffic, driven by the proliferation of internet-of-things devices and broadband […]

Broadband internet services are disrupted in most parts of Nepal

Credit: Pixabay/CC0 Public Domain Broadband internet was disrupted in many parts of Nepal on Thursday as Indian vendors from whom most Nepali private operators source the bandwidth stopped providing the services because of payment defaults. Private internet service providers in Nepal issued notices saying their services were either disrupted or connections were slow. The state-run […]

New metasurface innovation unlocks precision control in wireless signals

a The metasurface model. b Unit cell rotation controlled for the polarization conversion function. c Space controlled by blue DC motors for beam scanning functions. Credit: Microsystems & Nanoengineering Researchers have unveiled a technology that propels the field of wireless communication forward. This cutting-edge design, termed a reconfigurable transmissive metasurface, utilizes a synergistic blend of […]

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