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宽带移动通信传输正在改变着人们的生活.作为信息传输的重要环节,信号的功率放大在无线通信中起着关键作用.第十届全国研究生数模竞赛B题:功率放大器非线性特性及预失真建模,利用数学建模的思路辨识功率放大器非线性失真行为模型并通过预畸变来减少失真.通信系统的发展需要有技术弥补功率器件的固有非线性特性,保证功率放大器的能量转换效率和线性度.随着器件的更新和信息传输速率的增加,解决此问题的数学模型—预失真算法一直在更新和发展.在研究生数模竞赛中引入此类赛题,可以开阔思维,激发研究生使用数学的兴趣,提高利用数学模型解决实际工程问题的能力,同时利用学生思维活跃的优势,提出有价值的创新点,丰富现有的算法类型,为国内相关企业研究解决此类问题提供新的思路方法,具有重要的意义.
Broadband mobile communications transmission is changing people’s lives.As an important part of information transmission, the signal power amplification plays a key role in wireless communications.The tenth National Graduate Mathematical Contest B: Nonlinear characteristics of power amplifiers and pre-distortion Modeling, the use of mathematical modeling to identify the power amplifier nonlinear distortion model and pre-distortion distortion to reduce distortion.Development of communication systems require technology to make up for the inherent nonlinearity of power devices to ensure that the power amplifier power conversion efficiency and linearity Degree.With the updating of devices and the increase of information transfer rate, the mathematical model to solve this problem, the predistortion algorithm, has been continuously updated and developed.Importing such topics in graduate mathematics contest can broaden the thinking and stimulate the students to use mathematics , Improve the ability of using mathematical models to solve practical engineering problems, and at the same time make use of the advantage of students’ active thinking to come up with valuable innovation points and enrich the existing algorithm types so as to provide new ideas and methods for domestic related enterprises to study and solve such problems , Of great significance.