一种5G FBMC-16QAM抗干扰系统仿真研究

Simulation Study on a 5G FBMC-16QAM Anti-interference System

为了解决5G通信系统中存在的干扰问题,提出一种将多载波技术(FBMC)与正交幅度调制(QAM)技术相结合的方法,可以更好地解决相邻子载波干扰问题,并提高功率效率、降低带外衰减。进而设计一种基于5G FBMC系统的16QAM调制解调器,并通过星座图和FBMC-16QAM调制解调数据的误码率仿真曲线进行分析与比较,结果表明:随着信噪比的增加,误码率逐渐降低。此外,在信噪比相同的情况下,随着进制数的增加,误码率也逐渐增加。

To address the interference issues in 5G communication systems,this paper proposes a method that combines the filter bank multicarrier(FBMC)with quadrature amplitude modulation(QAM),aiming to better mitigate adjacent subcarrier interference and improve power efficiency while reducing out-of-band attenuation.A 16QAM modulation and demodulation scheme based on the 5G FBMC system is designed and analyzed by utilizing constellation diagrams and simulation curves of the error rate for FBMC-16QAM modulation and demodulation.The results show that in this system,the error rate decreases gradually with increasing signal-to-noise ratio.Moreover,under the same signal-to-noise ratio,the error rate also increases as the modulation order increases.