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随着3G通信网络技术的发展,4G也开始得到了长足的发展。4G通信网络技术是建立在3G通信网络技术基础之上,强化3G的主要优点,摒弃3G的主要缺点,实现对相关使用功能的完美化。OFDM(Orthogonal Frequency Division Multiplexing,正交频分复用)最大的优点表现在:(1)抗干扰;(2)抗信道衰落;(3)频谱利用率极高。本文分析OFDM的基本使用原理、4G技术优缺点以及现阶段通信网络系统的发展现状,最后分析OFDM技术在4G通信网络系统中的应用。
With the development of 3G communication network technology, 4G has also started to make great strides. 4G communication network technology is based on the 3G communication network technology, the main advantages of strengthening 3G, 3G to abandon the main shortcomings, to achieve the perfect use of related functions. The greatest advantages of OFDM (Orthogonal Frequency Division Multiplexing) are as follows: (1) anti-interference; (2) anti-channel fading; and (3) high spectral efficiency. This paper analyzes the basic principle of OFDM, the advantages and disadvantages of 4G technology and the status quo of the development of communication network system. Finally, the application of OFDM in 4G communication network system is analyzed.