OFDM技术在5G通信中应用的研究

Research on OFDM Technology Application in 5G Mobile Communication

正交频分复用(OFDM)技术是5G通信中的关键技术,该技术在信息传递过程先把带宽分割成若干相互正交的子载波,然后将被调制的信息附在若干相互正交的子载波上传送出去,实现在没有干扰多子载波上并行传递信息,从而使频率资源得到有效利用。OFDM技术不仅提高系统频谱的利用率,而且有效地避免频率的选择性衰落。因此,该技术是实现无线通信高速传输的关键技术。

OFDM technology is a key technology in 5 G communications.In the process of information transmission, the bandwidth is divided into several orthogonal subcarriersand the modulated information is attached to a numer of mutually orthogonal subcarriers and transmitted so as to realize the parallel transmission of information on multiple subcarriers without interference so that frequency resources can be effectively used.OFDM technology not only improves the spectrum utilization of the system, but also effectively avoids the selective fading of frequency.It is a key technology to realize high-speed wireless communication.