传统的OFDM系统普遍存在着带外频谱泄漏高、波形参数不可调等缺点，不符合未来5G通信高数据传输量、高灵活性要求。为此，在现有OFDM技术的基础上，提出了基于F-OFDM的可变子载波接入技术，即滤波-正交频分复用技术。根据不同应用需求，在各子带上添加可变子带滤波器，抑制带外频谱泄漏，并用MATLAB仿真验证了该方案的可行性。结果表明所设计的模块基本满足F-OFDM通信系统的要求。

Traditional OFDM system has the disadvantages of high out-of-band spectral leakage and no adjustable waveform parameters,which can’t satisfy the high quantity of data transmission, high flexibility requirements of the fifth generation communication(5G). Therefore, based on the existing OFDM technology, this paper proposes a technique based on F-OFDM variable subcarrier access technology, named filter- orthogonal frequency division multiplexing. According to different application requirements, the variable filter is added to each subband to restrain the out-of-band spectrum leakage, and MATLAB simulation is used to test the feasibility of this method. The results show that the designed module meets the requirements of F-OFDM communication system.