OFDM-MATLAB-仿真程序

％ y=filter(sig,fmin,fmax) ％ 对信号进行理想滤波，可完成低通，带通 ％ sig为被滤波信号 ％ fmin为下限频率，当fmin为0时为低通滤波器，当fmin>0时，为带通滤波器 ％ fmax为上限频率，fmax>fmin ％ fs为信号的采样频率 ％ y为经过滤波后的信号 (％ Y = filter (sig, fmin, fmax)％ of the ideal signal filtering, to be completed by low-pass, band-pass filter％ sig for signal％ fmin is the minimum frequency, when fmin for 0:00 for the low-pass filter, when fmin > 0, for the bandpass filter％ fmax is the upper limit frequency, fmax> fmin％ fs for signal sampling frequency％ y for the filtered signal)

说明：  小世界网络路径求法，以及聚集度的求法，开发环境是matlab(small world)

利用MATLAB实现峰值信噪噪比的公式，很好用。精确的验证过 (Using MATLAB to achieve a peak signal-to-noise to noise ratio formula, easy to use. Verified accurate)

给出了经典的粒子群优化算法的matlab实现方法，并结合测试函数，显示算法的寻优能力(Gives a classical particle swarm optimization algorithm matlab implementation, combined with the test function, the ability to display optimization algorithm)

LTE (Long Term Evolution) and LTE-Advanced have been developed to respond to the requirements of this era and to realize the goal of achieving global broadband mobile communications. The goals and objectives of this evolved system include higher radio access data rates, improved system capacity and coverage, flexible bandwidth operations, significantly improved spectral efficiency, low latency, reduced operating costs, multi-antenna support, and seamless integration with the Internet and existing mobile communication systems. The LTE physical layer includes transmissions in uplink and downlink. The uplink transmissions are governed by PUSCH. The throughput performance of PUSCH is analyzed here

对于OFDM系统在三种信道模型下进行了仿真，给出了误码率分析并绘图给出了结果(For OFDM system in the three channel model simulation under the given bit error rate analysis and mapping results are given)

计算图想的傅里叶变换并显示其频谱，本设计中显示了四种图像的频谱，供大家学习和参考，比较每一种频谱的不同！(Map to calculate and display the Fourier transform of the spectrum, the design spectrum shows four images for all to study and reference, compare the different spectrum of each!)

很好的一本matlab参考书，上传个大家，供大家参考，下载使用(matlab book)

在数值方法中，用Matlab实现Gaussian Hermite， 此方法用来计算数值积分(Gaussian Hermite)

基于拉格朗日插值法的可变分数延时滤波器比较图，通过比较不同的分数时延时的滤波器特性来观察分数延时滤波器的性质与限制(Lagrange interpolation method based on variable fractional delay filter comparison chart, filter characteristics by comparing the scores of different delay time to observe nature and limitations of fractional delay filter)