The development status and trend of wireless communication technology
Abstract: Since the reform and opening up, the country’s economy has continued to develop, science and technology have made great progress and improvements, and wireless communication technology has also begun to enter a stage of rapid development. With the continuous popularization and development of the Internet, people continue to put forward higher requirements for wireless network communication technology in life and work. In order to meet people's work and life needs, wireless communication technology has begun to be continuously updated. This article summarizes and looks forward to its future development trends by analyzing the development status of wireless communication technology.
Keywords: science and technology; wireless communication technology; Internet; development trend
I. Introduction
Wireless network is a mobile communication network that can provide customers with the communication services they need anytime and anywhere. There is no need to set up a line in advance, and it can easily cover places that cannot be covered by a wired network. These advantages are incomparable with a wired network. In recent years, wireless networks have developed rapidly, not only in commercial applications, but also in military applications. As the service content provided by the network becomes more and more abundant, the information processing capacity of communication terminals is also strengthened, and services such as mobile office and mobile shopping have finally turned from fantasy to reality. Commercial wireless networks ushered in the third and later generations of digital communications, meeting people's needs for work, life and entertainment. Military wireless networks have also developed from analog communications to digital communications, and communications equipment has been gradually improved and realized the transmission of digital voice, fax, image, and data services. The capabilities of various communication equipment have been improved.
2. Definition and characteristics of wireless communication technology
(1) Definition of wireless communication technology
Wireless communication uses the characteristic that electromagnetic wave models can propagate in free space to realize the exchange of information in space. In recent years, wireless communication technology has developed rapidly, and the fields of application have also been continuously expanded. Wireless communication generally has two communication modes. One is satellite communication, which uses a communication satellite as a relay station to establish microwave communication with different communication entities on the ground, which has the advantage of long communication distance. The second is microwave communication. Its advantages are large communication capacity and bandwidth. The disadvantage is that the transmission distance is short.
(2) Features
1. The development of mobile communications around the world is uneven
The penetration rate of mobile communications in many developed countries and regions has reached a high level, and the number of new mobile users has gradually decreased. However, many developing countries and regions have just begun to develop mobile communication technology, and the number of mobile users has increased rapidly. But the ARPU value created by mobile users in developed countries is much higher than that in developing countries. Countries such as Japan and South Korea have become new hotspots in the development of global mobile communications, and new data services have developed rapidly.
2. Technology continues to upgrade and develop rapidly
With the continuous development and popularization of mobile communications, global broadband wireless technology research and applications have also become popular. Various broadband wireless access technologies have entered the market, such as WLAN technology, broadband fixed wireless access technology, UWB technology, etc. , Has added new vitality to the development of the wireless communication industry.
3. The development status of wireless communication technology
(1) The development of 3G technology continues to mature
Now mobile communication technologies are all developed to 5G, but now 3G is more widely used. 3G technology continues to mature and improve in the process of application, and it has been proved to be in line with the application of modern mobile communication technology development. At present, 3G mobile communication technologies mainly include three standards: WCDMA, CDMA2000, and TD-SCDMA. Each standard has a certain application form. For example, China Mobile mainly uses the TD-SCDMA standard. These three standards have their own characteristics. In the market competition, there is a three-pronged situation. Each standard technology is constantly improving to meet the needs of users, and now supports voice and data signals, which can bring users a better experience.
(2) The rapid development of broadband fixed wireless access technology
Broadband fixed wireless access technology has the advantages of fast construction speed, flexible access methods, and high bandwidth. It has received extensive attention and attention from the wireless communication industry. But broadband fixed wireless access technology is not perfect. The 3.5GHz DDMS technology has insufficient bandwidth in my country, and the high-frequency 26GHz LMDS technology is more severely affected by the weather, which restricts its development to a certain extent. Therefore, in actual applications, you need to choose according to your actual situation, give full play to your own advantages, and maximize your strengths and avoid weaknesses.
(3) Ultra-wideband wireless access technology-UWB
UWB has the characteristics of low cost, low power consumption and high efficiency. It is a time domain communication technology with ultra-high-speed wireless access technology. The UWB modulation method uses ultra-short period pulses instead of the carrier waves used in previous wireless communication networks. It sends out the signal according to 0 or 1. The signal generated by pulse modulation is an ultra-wideband signal with extremely low spectral density. The center frequency of the signal is between 650MHz and 5GHz. It has strong anti-interference ability and multi-channel ability. Many available channels. Compared with cdma system, time domain communication system has low cost and simple structure.
(4) New product of broadband wireless technology-Wimax
Wimax technology has the characteristics of wide coverage, wide and high band, etc., attracting more and more attention, and it is the new focus of the wireless industry. Wimax's advantages in solving wireless metropolitan area networks are particularly prominent. It can transmit signals up to 31 miles away and has a network connection speed of 70 megabits per second. Therefore, many experts believe that Wimax will pose a threat to 3G with its wide coverage and faster transmission speed. Wimax's various advantages in cost, transmission speed and coverage make it possible to break the industrial pattern.
- Emerging Short Range Wireless Communication Technology--Bluetooth Technology
In addition to focusing on the development of long-distance wireless communication technology, short-distance wireless communication technology has also attracted more and more attention, and the development speed has gradually accelerated. In recent years, various short-distance portable wireless communication devices are mainly connected by infrared links. Although IRDA can avoid the use of cables and wires, it is not very useful. The emergence of Bluetooth technology has successfully solved these problems and has become a wireless network that can provide services for commercial users and the public within a short distance. Access points for voice and data replace cables and wires. The Bluetooth technology realizes the short-distance wireless connection in three aspects: a network without a fixed central station that requires software, hardware, and interoperability. Bluetooth technology is mainly used in Internet bridges, wireless image transmission in digital cameras, three-in-one phones, interactive meetings, various household remote control devices, and so on.
Fourth, the future trend of wireless communication technology development
1) Bluetooth technology will be the new star of the wireless communication industry. The wireless communication technology will continue to develop in the process of specific applications, and effective innovation will be carried out in the development process to meet the development needs of modern communication technology. The application of wireless communication technology in various fields has achieved certain value, such as the application of Bluetooth technology in wireless communication technology. This is the development trend of wireless communication technology. Bluetooth technology is now used in many fields, such as in vehicle systems. Using Bluetooth technology to improve work efficiency, the application of Bluetooth technology in various fields is the development trend of wireless communication technology, especially in the process of short-distance communication, Bluetooth technology has certain advantages.
2) Information personalization of wireless communication terminals The rapid development of wireless communication technology meets the development needs of modern communication technology, especially wireless communication technology is the development need of mobile communication technology, and the specific application of information of wireless communication terminals meets the development needs of modern wireless communication. The popularity of smart phones now makes people put forward higher requirements for wireless communication technology. At the same time, wireless communication technology needs to be continuously updated to meet the needs of current wireless communication technology development. In the current global informatization process, the personalization of information on wireless terminals is a requirement for the development of wireless communication, and social development also puts forward new requirements for wireless communication technology.
3) Convergence trend of wireless communication technology In the actual application process, wireless communication technology is constantly improved and innovated according to the application effect to meet the needs of modern social development. Each mobile communication technology has its own advantages and disadvantages, according to the needs of development , There needs to be effective integration between wireless communication technologies to meet the development needs of modern mobile communication technologies. The fusion of wireless communication technology and cellular technology is preferred. This is a commonly used fusion method for wireless technology. For example, Bluetooth technology is a commonly used fusion technology application and is more suitable for modern short-range wireless communication technologies. Secondly, with the integration of broadband fixed technology and wireless technology, people are now increasingly demanding wireless mobile communication technology, requiring fast communication speed and relatively stable networks. The combination of broadband fixed technology and wireless communication technology is the development trend of wireless communication technology. It is necessary to effectively improve its ability to combine and make use of the development of broadband and wireless communication technology. In the fierce market tension, it will help to improve the rapid development of wireless communication technology. , To improve its practical application capabilities. Finally, the integration of wireless communication technology and video multimedia technology puts forward new requirements for communication capabilities, requiring certain requirements for network communication capabilities. It is necessary to speed up the integration of wireless communication technologies to improve wireless communication capabilities and network speeds. The integration of information technology, the application of audio technology and multimedia technology is the development process of future communication technology, and it is also a new business model. Nowadays, the application of wireless communication technology has certain regional restrictions. The application of each technology does not necessarily have a omnipotent effect. It is necessary to select the appropriate wireless communication technology for communication according to the regional characteristics to ensure the quality of wireless communication and improve the function of wireless communication. Wireless communication technology is the development trend of future mobile communication.
Five, experience
Wireless communication technology is an important content in the man-machine dialogue and data communication chapter of the information detection and collection course. Wireless communication technology is a signal propagation method that relies on electromagnetic wave signals to be able to arbitrarily propagate in any direction in three-dimensional space to realize the propagation and exchange of information. With the rapid development of modern technology, wireless communication technology has become the most widely used technology in social life, and it plays an indispensable role in society, especially in the field of mobile communication. The field of wireless mobile communication involves electromagnetic waves, satellite communication, and near-field communication, etc., which are the most frequently contacted technologies in people's lives. At the same time, this technology can also realize long-distance information transmission, so that people can communicate across distances. I believe that wireless communication technology will play a more important role in future life and will have a profound impact on human life.