24 results found. 1 - 10 of 24 results
The unit of communication speed is bit/s, which relates to the time axis (time domain), but in the actual communications field, the frequency domain perspective is also necessary. This article will introduce why discussion of frequency is essential for communication devices such as smartphones.
Within the standardization efforts for 6G communications, the frequency band known as "FR3" is currently attracting significant attention as an important specification, and international discussions are underway. This article discusses international trends concerning FR3 and our supporting technologies for 6G communications.
AMRs are transportation robots that autonomously select and travel on optimal routes. There is a growing need for AMRs in logistics warehouses, manufacturing sites, and elsewhere. In this article, we will take a look at the effectiveness of utilizing sensing using LF communication to address issues such as sensor malfunctions and missed detections caused by blind spots in AMRs.
As undersea resources are attracting attention around the world, underwater drones are increasingly being used to survey those resources. In particular, there is great interest in the potential of autonomous underwater vehicles (AUVs) capable of fully autonomous navigation. How do AUVs operate underwater where radio waves cannot reach? In this article, we will explain the technology of underwater communication that is essential for AUV operation.
Many communication devices currently in widespread use employ multivalue digital modulation to achieve higher communication speeds. Here we will explain this multivalue digital modulation.
Here we explain signals, communication speed, and digital modulation, which form the basis of wireless communication, or the movement of digital data, that has become social infrastructure.
The spread of PCs and the Internet has led to the rapid development of the digital society since the mid-1990s, and with the appearance of digital devices such as smartphones, it can be said that digital has become a natural part of society. Here we discuss matters related to digital technology, which can be considered the foundation of our current society and lives, such as the types, characteristics, and units of quantity of digital data.
Metamaterials are artificial substances that behave in ways not found in substances in the natural world. They control the reflection, transmission, and other properties of electromagnetic waves (light and radio waves), sound waves, and similar. We introduce here the types, usage examples, and prospects of metamaterials. We also look at the Ultrasound Transmission Metamaterial developed by Murata Manufacturing.
Beyond 5G/6G is said to become a mobile communications system assumed to make use of the autonomous features of AI (Artificial Intelligence)/ML (Machine Learning). This article explains the prospects for AI/ML application in next-generation mobile communications systems.
The smartphones used by all sorts of people today are capable of transferring audio, image, and video data without interference. This is possible thanks to technologies that prevent problems such as the overlapping of different streams of data or interference from noise. This article describes two such technologies: “multiplexing,” which is aimed at enabling efficient utilization of radio signals, and “multiple access,” which makes use of multiplexing technology.
