604.1818.741

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604.1818.741, also known as the Global System for Mobile Communications (GSM), is currently the world’s most widely used mobile communication platform. It is an advanced technology that enables wireless communication between two distinct points. GSM supports a range of services such as voice, data, and multimedia communication. It was developed in early 1990s and today GSM is available in more than 200 countries, with over five billion users worldwide. This essay will outline the application fields and working principle of GSM.

The applications of GSM cover various fields. Firstly, it is widely used in cell phone communication. It allows for low-cost, and highly reliable transmission of data, voice, and related services over cellular networks. The high communication rate and reliability of GSM are suitable for emergency services such as fire rescue, ambulance, and police services, where secure and reliable communication networks are extremely important. In addition, it is also used for remote (wireless) device monitoring and control, such as ATM machines and mobile payment systems. In addition, GSM can also be applied in home alarm systems, industrial electrical devices, and environmental monitoring systems.

The GSM technology consists of two main components – the user equipment (UE) and the network. The network is responsible for providing access to the GSM services. It consists of a core network, access network, and often a public switched telephone network (PSTN). The core network is responsible for voice, data, and other services routing between different cells and mobility management. Meanwhile, the access network handles the processing of calls, such as dialing, authentication, and authorization as well as, call control and call signaling.

At the same time, the user equipment is composed of a radio frequency (RF) section, baseband processor, application processor, and user interface module. The RF section is responsible for interfacing with the radio infrastructure. The baseband processor processes audio signals by taking care of signal encoding, decoding, and encryption/decryption of mobile-to-mobile (M2M) and mobile-to-network (M2N) traffic. The application processor provides the necessary functions for multimedia applications. The user interface module ensures a convenient interaction between the user and UE.

By using the time division multiple access (TDMA) technology, GSM can support multiple users simultaneously. It does this by slicing the radio frequency bandwidth into discrete “time frames”, each of which is divided into eight time slots. Each time slot is used by a different user. In this way, multiple users can use the same radio frequency channel without interference. In addition, GSM also uses an advanced coding technology called error correction coding, which ensures a high data integrity and accuracy.

The connection between two separated points is Established by the GSM network. Once the connection is established, two parties can communicate in their own radio frequency channel by using digital speech coding (DSC) and data communication protocols. DSC is a technology that compresses digital audio signals so they can be transferred using the limited capacity of GSM, while data communication protocols ensure reliable transmission of data for services such as fax and Internet.

In summary, GSM is an advanced technology that provides a low-cost, reliable, and efficient platform for wireless communication. Its applications extend to various fields, including mobile phone communication, remote monitoring and control, home alarm systems, industrial electrical devices, and environmental monitoring systems. The GSM system operates by using the time division multiple access technology and error correction coding, which ensures a high data integrity and accuracy. As a result, GSM has become the world’s most widely used mobile communication platform and is expected to be further developed in the future.

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