摘要
针对现代移动数字通信中出现的频率选择性衰落的问题,提出使用正交频分复用技术(OFDM)进行克服。通过构建OFDM通信系统模型,依靠Matlab编程语言进行仿真,对比加入窗函数以及循环前缀前后,不同的信道插值手段对于信号所带来的影响。实验结果表明,DFT插值手段在OFDM通信系统中大多数情况下对于信号质量的改善是可行、高效的。
In order to solve the problem of frequency selective fading in modern mobile communication,orthogonal frequency division multiplexing（OFDM）is proposed.The technology has the advantages of high efficiency,anti-interference,high frequency utilization and so on.Through the construction of OFDM communication system model,the simulation is carried out by MATLAB programming language,and the influence of different channel interpolation methods on signal is compared before and after adding window function and cyclic prefix.The experimental results show that the DFT interpolation method is feasible and efficient for the improvement of signal quality in OFDM communication system.
出处
《青岛大学学报（自然科学版）》
CAS
2017年第3期45-50,共6页
Journal of Qingdao University(Natural Science Edition)
基金
青岛市产学研合作计划项目(批准号:13-1-4-152-jch)资助
