comparison_21022013

说明：  比较简洁的OFDM+QPSK的仿真,带AWGN和误码率统计(Simple comparison of the simulation of OFDM+ QPSK with AWGN and bit error rate statistics)

认知无线电，无线通信，matlab仿真代码(cognitive radio wireless communications matlab code)

OFDM使用ifft加入CP的子函数。能够和其他函数并行使用，并被调用。(Joined CP in OFDM using ifft Functions. And other functions can be used in parallel, and was called.)

地震勘探动校正程序，地震勘探中的常规处理(NMO code for seismic exploration, conventional processing in seismic exploration.)

说明：  差分进化算法的各个环节实现代码，主要包括交叉、变异、选择(The implementation code of each link of differential evolution algorithm mainly includes crossover, mutation and selection)

精通maltab--maltab学习指导辅导练习综合教程用书(Proficient maltab- maltab comprehensive learning tutorial guidance counseling practice books)

best soudo code for k-epso easy to understand and very useful

包含有希尔伯特黄变换的主程序、边际谱的计算方法、并绘制了仿真信号的FFT频谱和功率谱，并调用emd分析方法，绘制了emd分解结果，以及瞬时包络和瞬时频率图，还有Hilbert-Huang谱和Hilbert边际谱( Including the main program of the Hilbert Huang transform, marginal spectrum calculation method, and draw the simulation signal FFT spectrum and power spectrum, and call EMD analysis method, drawn EMD decomposition, and instantaneous amplitude and instantaneous frequency map and Hilbert spectrum and Hilbert marginal spectrum)

计算赫斯特指数Calculates the generalized Hurst exponent H(q) of a stochastic variable x(t) (a time series) the scaling of the renormalized q-moments of the distribution <|x(t+r)-x(t)|^q>/<x(t)^q> ~ r^[qH(q)] The value of H(q) give indication about the fractal nature of the signal. H(q) = 0.5 corresponds to a Brownian motion, deviations form 0.5 and dependency on q are indications of multi-fractality and time-correlations.(Calculates the generalized Hurst exponent H(q) of a stochastic variable x(t) (a time series) the scaling of the renormalized q-moments of the distribution <|x(t+r)-x(t)|^q>/<x(t)^q> ~ r^[qH(q)] The value of H(q) give indication about the fractal nature of the signal. H(q) = 0.5 corresponds to a Brownian motion, deviations form 0.5 and dependency on q are indications of multi-fractality and time-correlations.)

qrs detection code written in matlab