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scps-tp协议中在opnet仿真软件中的实现代码(The expansion of the transmission window in the SCPS-TP protocol and the snack mechanism and the Vegas algorithm to implement the code in the OPNET simulation software)

SOFTWARE FOR ENGINEERS

实现2ASK、2FSK调制及两者的包络检波解调(Implementation of 2ASK, 2FSK modulation and envelope demodulation of both)

an efficient edge preserving approach

说明：  基于稀疏贝叶斯学习的窄带信号波达方向估计，实测有用，亲测有效！(Based on the sparse Bayesian learning, the narrow-band signal direction estimation is useful, and the pro-test is effective!)

信号处理综合建模仿真 1、 楼体模型的建立。 2、 实际环境干扰（如树木遮挡、环境噪声、系统内部噪声等）的加入。 3、 信号的反射与穿透衰减的考虑。 4、 天线扫描方式的确定。 5、 空间-SNR三维图像的绘制。(Integrated Modeling and Simulation of Signal Processing)

OFDM仿真程序，信道估计采用LS,MMSE,LMMSE,DCT等方法，做了个比较，ofdm那个是主程序(OFDM simulation program, channel estimation using LS, MMSE, LMMSE, DCT and so on, made a comparison, ofdm that is the main program)

运用matlab仿真实现多相滤波结构，带有中文注释，简单易懂。可以运行直接观察波形(Using MATLAB simulation to achieve polyphase filter structure, with Chinese annotation, easy to understand. Direct observation waveforms can be run)

说明：  基于子空间投影的 CSMG 波束形成算法，是一种将子空间投影与波束形成技术相 结合的抗干扰方法。该方法首先构造干扰子空间的正交补空间，再将天线阵列接收到的空时信号矢量向其投影，然后对投影后的输出信号采用具有严格约束最小功率的抽样矩阵梯度（CSMG）算法，在固定方向上进行波束形成，最后捕获、定位及解算出每个波束得到的无干扰数据等，可以有效地抑制干扰信号，同时又可以更好的保留期望信号。(The algorithm of the CSMG beamforming based on subspace projection, which is a combination of the Subspace projection and beam forming technology. Firstly, the data vector received by antenna array is projected onto the interference subspace, which is orthogonal to interference subspace for achieving interference suppression. And then, by using the method of the strictly constrained minimum power sampling matrix gradient(CSMG), after the projection of the subspace, the signal is beamformed in a fixed direction. Finally, for jammer-free data of each beam achieved to capture, locate, solute and so on. The ability of the suppress interference by this method, which can be more effectively, and keep the desired signal better.)

这个matlab代码仿真了M-QAM的传输。M的取值不同，调制方式分别为4QAM，16QAM，64QAM等。传输信道为AWGN信道，能出误码率曲线。(The matlab code simulation of the M-QAM transmission. The value of M, the modulation mode of 4QAM, 16QAM, 64QAM. The transmission channel is AWGN, the BER curves.)