Huffman-modeling

用于OFDM通信仿真的同步算法源代码，对作ofdm同步者很有帮助(For OFDM communications simulation synchronization algorithm source code, for those very helpful for OFDM synchronization)

MUSIC方法，对相关矩阵分解为噪声子空间和信号子空间，然后搜索得到需要估计的频谱(MUSIC method, the decomposition of the correlation matrix for the noise subspace and signal subspace, then search to get the spectrum to be estimated)

feature extraction using gabor filter.

各种信噪比估计算法，包括ls，lms，qam，噪声统计等(A variety of SNR estimation algorithms, including ls, lms, qam, noise statistics, etc.)

两个发射天线，两个接收天线的程序，包括编码，调制，解调等。(two transmit antennas two receive antennas system)

根据M值的改变可以产生2、4、8、16PSK数字调制基带信号，且成形滤波器可任选升余弦、根升余弦、高斯。(M may be generated according to a change value 2,4,8,16PSK baseband digital modulation signal, and optionally raised cosine shaping filter, the root raised cosine, Gaussian.)

说明：  （2,1，2）归零卷积码的维特比译码算法matlab实现((2,1,2) convolutional codes Viterbi decoding)

说明：  在2d不光滑曲面上的射线跟踪算法，效果比较好，希望可以帮助到大家(2d surface is not smooth in the ray-tracing algorithm, the effect is good, hope you can help to)

参考Matlab提供的模块建立简化的三相锁相环的仿真模型，只保留必要的步骤，如abc-dqz只计算Vq，去除频率反馈模块和自动参数调整模块等。 建立单相锁相环的计算模型  简化单相锁相环的系统结构，保留必要的PI控制器等模块  验证并讨论输入信号频率在45-65Hz变化时设计的锁相环的动静态性能  仿真并分析三相输入信号包含谐波、不平衡和直流偏移时锁相环的锁相结果(Reference Matlab provides three-phase PLL module to establish a simplified simulation model, retaining only the necessary steps, such as abc-dqz counting only Vq, remove frequency feedback module and automatic parameter adjustment module.  simulation and analysis of the three-phase input signal contains harmonics, unbalance and DC offset PLL phase-locked Results)

Matlab for Experiments