摘要
简述了频分多路复用技术的相关内容.在频分多路复用技术的基础上,引入了OFDM技术系统信号模型,并描述了正交频分复用(OFDM)的输出信号表达式.同时,对正交频分复用系统机理进行分析.采用频域采样序列理论和快速傅里叶变换技术的方法,对OFDM系统的调制和解调分别进行了较详细地分析.得到了每个子载波的信号表示式和OFDM系统的信号表达式的解析结果.
This paper introduces the frequency-division multiplexing technolgoy firstly. Then the systematic signal model in OFDM in presented and the output signal expression in orthogonal frequency division multiplexing （ OFDM ） in described. At the same time, the mechanism of orthogonal frequency division multiplexing system is analyzed. Frequency-domain sample sequence theory and the fast Fourier transform method are used to analyze the modulation and demodulation of the OFDM system in details respectively. Analytical results of the signal expression of each subcarrier and signal expression of OFDM system are gotten.
出处
《浙江工业大学学报》
CAS
2012年第5期507-511,共5页
Journal of Zhejiang University of Technology
基金
国家自然科学基金资助项目(60362001
69862001)
关键词
频分
信道
数据流
正交性
频域
frequency-division channel data stream orthogonal
frequency-domain
