下一代无线通信关键技术研究

目前商用移动通信技术正由第二代（2G）向第三代（3G）过渡,国际电信联盟已经开始研究并制订第四代（4G）移动通信标准,4G技术是把目前3G移动通信系统与无线局域网结合的产物,具有高带宽、低延时和高可靠性等优点。文章首先对现有的4G通信协议进行介绍,阐述了它们各自的优缺点,然后对其采用的新技术进行详细的论述,最后简单总结了无线通信技术的挑战和发展趋势。

Research on key technologies of next generation wireless communication

At present, the commercial mobile communications technology has a transition from the second generation （2G） to the third generation （3G）, and the International Telecommunication Union has started to research and develop the fourth generation （4G） mobile communication standard. 4G technology is the combination of the current 3G mobile communication system and the wireless local area network, which has the advantages of high bandwidth, low delay and high reliability. This paper first introduces the existing 4G communication protocols, analyzes their respective advantages and disadvantages, and then discusses the new technologies used in detail. In the end, it summarizes the challenges and development trend of the wireless communication technology.