摘要
正交频分复用技术是一种具有很强的抗干扰和抗衰落能力、较高的信道利用率的多载波高速数据传输技术。介绍了OFDM基本原理和关键技术并讨论了正交频分复用系统在4G和铁路中的应用。
The technology of orthogonal frequency division multiplexing is a kind of multiple carrier modulation technology that can transfer high bit rate data. It has the advantages of anti-jamming, anti- declining and high utilization rate of channel. Introduces the basic principles and key technologies of OFDM, illustrates its application in 4 G and railway.
出处
《电气化铁道》
2006年第2期45-47,共3页
Electric Railway
