OFDM

matlab partial code for reference purpose

Learn Matlab - Laboratory

crazy climber method

实序列FFT快速算法，用N点FFT计算2N点实序列的FFT，比直接进行2N点FFT运算减少一半运算量。(Real sequence FFT fast algorithm, using N-point FFT calculation 2N point real sequence of FFT, than the direct 2N-point FFT computation halved.)

运用数字信号学基本原理实现语音信号的处理，在matlab7.0环境下综合运用信号提取，幅频变换以及傅里叶变换、滤波等技术来进行语音信号处理。(Learn the basic principles of the use of digital signal processing to achieve the speech signal in the integrated use of signal extraction matlab7.0 environment, amplitude-frequency transform and Fourier transform, filtering and other techniques for speech signal processing.)

基于matlab的最佳基带传输系统仿真(升余弦滚降系统)(the best base-band transmission system simulation (or cosine roll-off system))

放大前传协作的仿真代码：单/多中继协作的性能分析。包括MRC,Best-SC,EGC,GSC,Nth SC等多达9种合并方法的系统性能分析。(AF simulation code: single/multi-relay cooperative system performance. Including MRC, Best-SC, EGC, GSC, Nth SC system performance of up to nine consolidation method.)

为了实现DOA和时延的联合估计,提出了一个无线通信中高分辨率的联合角度和时延估计方法,该方法不需要对参数进行搜索,利用空时矩阵的特征向量和特征值分别估计DOA和时延,通过特征值和特征向量的对应关系,估计的参数可以自动实现配对, 只要各路径信号的DOA和时延不同时接近此方法都可以适用,与JADE-MUSIC,JADE-ESPRIT和SI-JADE算法相比,该算法具有较好的鲁棒性和较小的估计误差。仿真结果证明了该算法的有效性。 (In order to achieve the joint estimation of DOA and delay, proposed a wireless communications joint angle and high resolution delay estimation method, the method does not require parameters to search using the space-time matrix eigenvectors and eigenvalues​ ​ , respectively, and the estimated DOA delay, by the correspondence between eigenvalues ​ ​ and eigenvectors, the estimated parameters can be automatically paired DOA and delay of each path as long as the signal is not close to this same method can be applied, with the JADE-MUSIC, JADE-ESPRIT and SI-JADE algorithm, the algorithm has better robustness and smaller estimation error. The simulation results show the effectiveness of the algorithm.)

雷达直达波和目标回波之间抵消，两个信号一强一弱，既可以抵消强信号，也可以抵消弱信号(Radar direct wave and the target echo offset between the two signals a strong one weak, only to be offset by a strong signal, you can also offset the weak signal)

说明：  数字波束形成，阵列信号，里面包含了经典DBF算法和基于FFT多波束形成算法，适合初学者，自己编的(Digital beamforming, array signal, suitable for beginners, own)