second generation
Second Generation, symbolized by an abbreviation 2G, the second generation of mobile communications is based on the principle of the digital system instead of the analogue system, so this contributed to the second generation and its technologies distinguished by the advantages of digital systems, which vary between improved communication quality and purity of sound.
The digital system plays an important role in reducing the severity of the impact of interference on communications, thus reducing the level and number of errors. The second generation, the first time of its issuance, worked on transmitting and transmitting data, especially those that embody the service in the form of short messages.
The second generation came with a number of communication blindness opportunities, as it created a link between each of the callers and the station tower, depending on the so-called (ether), and it is noteworthy that the Global System for Mobile Communications (GSM) has been taken as a global standard for dominance of second generation communications, This was clearly demonstrated through the dominance of the global mobile system on the markets, where the number of subscribers to this system reached about 3,450,410,548 subscribers distributed over nearly 219 countries, and the second generation was unique through several stages before reaching the third generation stage, which is 2.5G, and 2.75g.
third generation
3rd Genertation, symbolized by an abbreviation of 3G, the third generation of wireless communication is based on a number of World Transportation Union standards, and these standards came to serve mobile phone technology, and it is noteworthy that the third generation standards were launched on the sidelines of the IMT-2000 global mobile transport program.
The third generation technologies have come to put a set of the most advanced and advanced services in the hands of the user, and the third generation is characterized by its high capacity, due to the presence of advanced spectrum efficiency, and among the most prominent third generation services are: wireless telephone communication with extended coverage. The third generation introduced HSPA + service to its users as an advanced standard of 3G technology, and also introduced HSDPA.
The difference between 2G and 3G
The difference is initially between 2G and 3G in terms of services, as the second generation provides short messages and voice calls, and its services do not exceed that, while the three generation provides the user with voice calls, SMS, and mobile media messages as well.
In addition to what they offer, there is also a difference between them in the quality of data and signal transmission between the parties to the communication process and its speed, the more the generation advances the speed and quality of communications increases, and there is another difference which is that the second generation uses digital radio signals, while the third generation uses voice packets, and data as well. With a speed exceeding 2 megabytes, the third generation could provide services and applications to the user such as video calls and television.