a1

TD-SCDMA trunked system

实现多用户MU，通过两次预编码来消除用户间干扰和流间干扰，同时这种处理极大简化了接收机复杂度。(MU-MIMO 。 the first precoding ：ZF-BD the second precoding ：ZF or MMSE)

DWT音频水印嵌入算法，DWT音频水印嵌入算法，DWT音频水印嵌入算法(The DWT audio watermark embedding algorithm, DWT audio watermarking algorithm, DWT audio watermark embedding algorithm)

matlab编写的对二值图像的数字水印添加与提取程序。压缩包中有示例图片。可以添加水印，结果肉眼不易分辨出变化，不影响使用。可加入信息长度达100个字节。提取时可验证是否被修改过，如修改不严重，可提取隐藏信息，如果修改过多，则只能确定是否有修改，而不知道隐藏的信息是什么(matlab prepared binary image of the digital watermark added and extraction procedures. Compression package has sample images. Can add watermarks, the results of the changes are not easily distinguishable from the naked eye, does not affect use. Can be added to the information length of 100 bytes. Verifiable extraction has been modified, such as modification is not serious, can extract hidden information, if too many modifications, you can only determine whether changes were needed, they do not know what information is hidden)

说明：  该程序是用matlab语言实现的对瑞利信道的描述，读者可以一试(that the procedure was used Matlab language of the Rayleigh Channel description, readers can a test)

本文提出了一种与J PEG标准完全兼容的医用内窥镜图像自适应量化压缩编码方法,该方法 采用二次扫描的措施,根据原始图像的频谱分布特点,自适应地修正J PEG推荐的量化表。(This paper presents a fully compatible with the J PEG standards of medical endoscope image adaptive quantization coding method, which uses the second scan measures, according to the original image of the spectrum distribution characteristics, adaptive to amend the recommended quantitative J PEG Table.)

水下声信道的声线建模，共有水面反射、水底反射和直达三条路径的模型(Voice modeling of underwater acoustic channel, a total water surface reflection, bottom reflection and the direct three path model)

子阵列划分的root-music algorithm(Sub-array by root-music algorithm)

模糊聚类的减法聚类的原代码 一种模糊聚类的方法(Subtractive clustering fuzzy clustering of the original code)

潮流计算 牛顿拉夫逊方法(chaoliujisuan niu dun la fu xun chao liu ji suan )