What is CDMA? Detailed answer

BIG ENCYCLOPEDIA FOR CHILDREN AND ADULTS
Free library / Directory / Big encyclopedia for children and adults

What is CDMA? Detailed answer

Big encyclopedia for children and adults

Directory / Big encyclopedia. Questions for quiz and self-education

Did you know?

What is CDMA?

Digital cellular communication system CDMA (Code Division Multiple Access) is a global digital standard for commercial communication systems based on code division of channels. Characterized by high data rate, capacity, 10-20 times greater than that of analog systems, and 3-6 times greater than other digital systems, as well as the absence of interference.

Author: Mendeleev V.A.

Random interesting fact from the Great Encyclopedia:

What animals can die from the growth of their own fangs?

Living on some Indonesian islands, babirus from the pig family are known for the hypertrophied lower and upper fangs of males. As they grow, the upper fangs bend back and, in older billhounds, can grow into the skin of the forehead. In rare cases, the direction of growth of the canine for some reason can go astray, which leads to its penetration into the brain area and death of the animal.

Test your knowledge! Did you know...

▪ Why did Zeus, the youngest son of Kronos and Rhea, become the main among the Olympian gods?

▪ What is an icon?

▪ Why are Belgian blue cows with extremely high muscle mass valued?

See other articles Section Big encyclopedia. Questions for quiz and self-education.

Read and write useful comments on this article.

<< Back

Latest news of science and technology, new electronics:

A New Way to Control and Manipulate Optical Signals 05.05.2024

The modern world of science and technology is developing rapidly, and every day new methods and technologies appear that open up new prospects for us in various fields. One such innovation is the development by German scientists of a new way to control optical signals, which could lead to significant progress in the field of photonics. Recent research has allowed German scientists to create a tunable waveplate inside a fused silica waveguide. This method, based on the use of a liquid crystal layer, allows one to effectively change the polarization of light passing through a waveguide. This technological breakthrough opens up new prospects for the development of compact and efficient photonic devices capable of processing large volumes of data. The electro-optical control of polarization provided by the new method could provide the basis for a new class of integrated photonic devices. This opens up great opportunities for ... >>

Primium Seneca keyboard 05.05.2024

Keyboards are an integral part of our daily computer work. However, one of the main problems that users face is noise, especially in the case of premium models. But with the new Seneca keyboard from Norbauer & Co, that may change. Seneca is not just a keyboard, it is the result of five years of development work to create the ideal device. Every aspect of this keyboard, from acoustic properties to mechanical characteristics, has been carefully considered and balanced. One of the key features of Seneca is its silent stabilizers, which solve the noise problem common to many keyboards. In addition, the keyboard supports various key widths, making it convenient for any user. Although Seneca is not yet available for purchase, it is scheduled for release in late summer. Norbauer & Co's Seneca represents new standards in keyboard design. Her ... >>

The world's tallest astronomical observatory opened 04.05.2024

Exploring space and its mysteries is a task that attracts the attention of astronomers from all over the world. In the fresh air of the high mountains, far from city light pollution, the stars and planets reveal their secrets with greater clarity. A new page is opening in the history of astronomy with the opening of the world's highest astronomical observatory - the Atacama Observatory of the University of Tokyo. The Atacama Observatory, located at an altitude of 5640 meters above sea level, opens up new opportunities for astronomers in the study of space. This site has become the highest location for a ground-based telescope, providing researchers with a unique tool for studying infrared waves in the Universe. Although the high altitude location provides clearer skies and less interference from the atmosphere, building an observatory on a high mountain poses enormous difficulties and challenges. However, despite the difficulties, the new observatory opens up broad research prospects for astronomers. ... >>

Random news from the Archive

Developing 30Gbps Communications from Huawei 07.04.2012

Mobile operators and client device manufacturers are actively working to provide support for LTE, but this progressive technology has speed limits. Currently, LTE networks cannot operate faster than 300 Mbps, while the LTE Advanced version has a ceiling of 1 Gbps. In the vast majority of cases, this will be enough, but some companies prefer to look into the long term.

Huawei has said that it is currently working on technology that will provide connectivity at speeds up to 30 Gbps. The developer calls the new solution "Beyond LTE" or "beyond LTE", according to Huawei, the protocol is 30 times faster than current fourth-generation communication standards. This was made possible by "key breakthroughs in antenna structure, RF architecture, IF algorithms and multi-user MIMO."

In current versions, LTE uses the 20 MHz band to reach 300 Mbps and 100 MHz for LTE Advanced. Huawei has not yet specified in which bands the 30 Gb / s mark is reached, it is only known that the protocol requires a "wide bandwidth" to operate. It is also not mentioned whether the new development is compatible with existing LTE technologies, and the approximate timing of the implementation of this development is also unknown.

Other interesting news:

▪ Painkillers reduce empathy

▪ The gadget is powered only by the heat of the human body

▪ Five beard hairs

▪ Flex ATX 500 W 80 Plus Platinum Power Supply

▪ ginkgo insecticide

News feed of science and technology, new electronics

Interesting materials of the Free Technical Library:

▪ section of the site Tools and mechanisms for agriculture. Article selection

▪ Eureka article! Popular expression

▪ Article Is it possible to drive a car faster than sound? Detailed answer

▪ article Determination of distances by visible details of objects. Travel Tips

▪ article Charge meter. Encyclopedia of radio electronics and electrical engineering

▪ article Babies from the stroller. Focus Secret

Leave your comment on this article:

All languages of this page

Home page | Library | Articles | Website map | Site Reviews