First, the development advantages of 4G communication technology
1. 1 is faster.
The biggest advantage of 4G network lies in the speed of wireless communication. According to the researcher's prediction, the wireless transmission speed in the future 4G communication system can reach 10M-20Mbps, and it may reach a higher point if it is the peak transmission speed, thus providing greater convenience for people to apply wireless networks.
The correlation spectrum of 1.2 network is wider.
In order to realize 4G communication technology and achieve faster network speed, it is necessary to upgrade the existing 3G communication speed, so that the broadband of network spectrum in 4G communication technology exceeds that in 3G communication technology. According to the researchers, for 4G network communication, each channel can only occupy 100Mhz spectrum, which is beyond the reach of 3G communication technology.
1.3 is smarter
With the popularization and use of 4G communication technology, the intelligence of communication networks and terminals is constantly improving, which is not only reflected in the intelligent design and operation of communication terminals, but also in the intelligent functions of network equipment. For example, according to the user's environment, time and other factors, through the network equipment terminal to provide personalized services for users.
1.4 communication methods are more diversified.
The mobile phone supported by 4G network is no longer a simple phone, it can provide more reliable voice data service and facilitate people's voice calls, but it has made a greater breakthrough in design and function, that is, it can be made into any imaginable shape.
Second, the application of 4G communication technology
2. 1 Software Radio Technology
This technology, also known as SDR technology, can effectively use modern digital signal technology, combine with programmable platform, and define the function of wireless platform according to software. In software radio technology, the technologies that can be used include programmable devices, signal processing technology, digital signal processing and so on. At the same time, through the application of software radio technology, various functions in the communication system, such as the programmability of software and the reuse of hardware equipment, can be guaranteed, thus reducing the waste of resources.
2.2OFDM technology
This technology is the most important technology in 4G communication technology and has been widely used in wireless transmission. The application of this technology is mainly to divide the communication channel into several sub-channels, modulate the wavelet of each sub-channel and then transmit it, so as to ensure the frequency selectivity of the channel and ensure that each sub-channel can remain flat. Narrow-width transmission through subchannels can ensure that the signal bandwidth is less than the channel bandwidth, thus effectively suppressing the interference between signal waveforms. In addition, the application of this technology has solved the problem of data transmission interference to a great extent, greatly improved the transmission frequency of the system, simplified the hardware structure, and facilitated the acceleration of network transmission speed.
2.3 Smart antenna technology
This technology is also called adaptive antenna array, or AAA. At first, this technology was mainly used in radar, sonar and other military fields, mainly to realize spatial filtering and positioning. In this technical system, by applying space division multiple access technology, the differential processing of signal transmission can be realized, and the signals of the same frequency or code channel in the system can be accurately distinguished, so that the signal coverage area can be dynamically controlled, and the main beam can be transferred to the user in time to ensure the reliability and security of the user's application network. By controlling signal interference, tracking users and their environment, we can know the specific situation of user network at any time, so as to provide users with high-quality links, strengthen the suppression of interference signals, extract applicable signals to the maximum extent, and ensure the availability of user network.
Third, the development trend of 4G communication technology
The application of 4G communication technology has shown great advantages. In the future development process, 4G communication technology will completely replace 2G and 3G communication technologies and become the dominant technology in the development of mobile communication. First of all, the market of 4G users will continue to expand, and its actual value will continue to rise. This is mainly because its network advantages cannot be realized by traditional mobile communication technology. Therefore, the future development of 4G communication technology will inevitably present a multi-band, multi-mode and multi-service application situation, and it will be fully intelligent, which will lead to more and more extensive user market and bring huge economic benefits. Secondly, 4G communication technology requires higher equipment. As the basic condition for the development of 4G communication technology, in order to reach its network transmission frequency, more base stations must be built to meet the transmission requirements of 4G communication technology. Finally, all operators are competing for 4G communication services. Because of the huge advantages of 4G communication technology, it is bound to have a larger user base, which brings sweetness to major operators. Therefore, the development of 4G services is bound to have a contest, and in this process, this technology can be further improved to provide users with more reliable services.
Four. conclusion
The germination and wide application of 4G communication technology not only provide people with faster network services, but also expand the application market and form a larger audience. While showing bright development prospects, it can also create greater market value and bring more economic benefits to people. Therefore, it is of great significance to strengthen the research of 4G communication technology, which is also a link that should be paid attention to in order to realize the continuous progress of mobile communication technology in the future development of China market economy.
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