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3麦克风tdoa定位matlab仿真代码(3, positioning the microphone tdoa matlab simulation code)

基于 DCT(离散余弦变换 )域的信息隐藏算法是目前应用最广的变换域算法 ,此类算法的最大不足是嵌信息量小。通过分析 DCT域隐藏算法隐藏容量少的原因 ,提出了一种大容量的 DCT域信息隐藏算法。算法首先对载体图像进行频谱均匀化处理 ,然后对图像进行全局 DCT变换 ,并将隐藏信息嵌入到载体图像的低频 DCT系数上 ,信息嵌入采用分段量化的方法实现 ,提取隐藏信息时不需要原始载体图像。实验结果表明 ,该算法的嵌入容量大 ,不可感知性好。(Based on DCT (discrete cosine transform) domain information hiding algorithm is the most widely used transform domain algorithms, the largest of these algorithms is the lack of a small amount of information embedded. Hiding Algorithm for DCT domain by analyzing the hidden reasons for the low capacity, a large capacity of information hiding algorithm for DCT domain. Firstly, the spectrum of the carrier image homogenization, and then the image is a global DCT transformation, and hidden information embedded into the image of the low-frequency DCT coefficients, the information embedded in the methods used to achieve sub-quantization, extract hidden information without the original Vector image. Experimental results show that the algorithm embedding capacity, can not be perceived good.)

Long Term Evolution LTE block interleaver and deinterleaver

利用六个参数对输入信号的调制方式进行判决 (Six parameters on the modulation of the input signal judgment)

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自适应陷波滤波器代码，可以较好地解决信号陷波问题(Adaptive Notch Filter )

matlab短时傅里叶变换例程，绘出等高线图形(matlab short time Fourier transform routines, draw contour graph)

dbpsk信号的调制解调matlab代码实现的一个例子，调制时差分编码，这样用1bit延迟差分检测的结果，直接就是原码，解调采用1bit差分延迟检测．(DBPSK signal modulation and demodulation matlab code an example of differential modulation encoding, such 1bit delay with the results of differential detection, direct that the original code, demodulation using 1bit delay differential detection.)

完成了对OFDM（正交频分复用）通信系统从信号输入，编码，发射，解码，求误码率的全过程，压缩包中word文件为系统仿真报告，其他为matlab代码。(Completes the OFDM (Orthogonal Frequency Division Multiplexing) communication system the signal input, encoding, transmitting, decoding, bit error rate of the entire process required)

说明：  面阵中二维角度DOA估计算法，采用ESPRIT，经典算法，注释清晰，可拿来直接用(Two dimensional angle DOA estimation algorithm in array, using ESPRIT, classic algorithm, clear notes, can be used directly)