OFDM_01

螺旋型K空间MRI扫描的原始数据，适于做螺旋型扫描下的图形重建算法研究。(Spiral K space of the original MRI scan data, suitable for helical scan to do the next graphical reconstruction algorithm.)

配电网，灰色负荷预测方法，分为城镇、农村、第二产业、第三产业用电量预测(Gray Load Forecasting Method for Distribution Network)

说明：  利用粒子滤波器对目标进行状态的检测估计,并且展示了滤波后与实际值的误差曲线图(Detection and estimation of target state by using particle filter)

只需改变结构的内外半径即可即可求解杆状结构和管状结构的相速度和群速度的频散曲线。(Just change the structure of the inner and outer radii can be solved phase velocity dispersion curves and the group velocity of the rod-shaped structures and tubular structures.)

HAF WHT 对应的MATLAB程序，用于机动目标检测，高阶模糊函数，MATLAB对应的程序(HAF WHT corresponding MATLAB program for maneuvering target detection, higher order fuzzy function, and MATLAB corresponding program)

在实际的调谐解调电路中，采用的是非相干载波解调，本振信号与发射端的载波信号存在频率偏差和相位抖动，因而解调出来的模拟I、Q基带信号是带有载波误差的信号。这样的模拟基带信号即使采用定时准确的时钟进行取样判决，得到的数字信号也不是原来发射端的调制信号，误差的积累将导致抽样判决后的误码率增大，因此数字QPSK解调电路要对载波误差进行补偿，减少非相干载波解调带来的影响。(In the actual tuning and demodulating circuit, non-coherent carrier demodulation is adopted, and the frequency deviation and phase jitter of the local oscillator signal and the carrier signal of the transmitting end are present, and thus the demodulated analog I and Q baseband signals are signals with carrier error.)

用matalb产生logisitc，tent，切比雪夫，改进型logistic四种混沌序列，同时产生Zadoff-Chu序列，并绘图比较几种序列间的自相关以及互相关性能。(Produced by matalb logisitc, tent, Chebyshev, improved logistic four kinds of chaotic sequences generated simultaneously Zadoff-Chu sequence, and drawing compare several sequences autocorrelation and cross-correlation properties.)

说明：  大气波导下，电磁波射频追踪研究，利用Matlab进行仿真(Radio Frequency Tracking of Electromagnetic Waves in Atmospheric Waveguide)

说明：  此程序可以对信号进行小波分解和重构，并且分解的频率按从高到低排序(This program can decompose and reconstruct the signal by wavelet transform, and the decomposition frequency is sorted from high to low.)

说明：  MATLAB仿真，对比OFDM与F-OFDM性能(Compare F-OFDM with OFDM using MATLAB)