Channel-Estimation

对于MIMO无线信道建模和仿真测试中遇到的一些常见问题予以了详细解答，其中详细介绍了空间相关性的那部分。(MIMO wireless channel modeling and simulation for the test to be some common problems encountered in the detailed answers, which details the spatial correlation part.)

In this paper, we present and analyze efficient frame synchronization and frequency offset compensation scheme with ternary sequences for an orthogonal frequency division multiplexing (OFDM) system in Rayleigh fading channels. Frame synchronization is an essential procedure for normal operation of the OFDM system because of sensitivity to synchronization errors. And when there are frequency offsets in OFDM frame, the loss of orthogonality occurs and the interference problem among several subcarriers is introduced. These fact leads to the requirement for joint implementation of the frame synchronization and frequency offset compensation.

One issue with underwater sensors is how to efficiently transfer large amounts of data collected by the node to an interrogating platform such as an underwater vehicle. It is often impractical to make a physical connection between the node and the vehicle which suggests an acoustic or optical wireless solution. For large amounts of data, the high bandwidth of underwater optical wireless is an advantage. A small, low-cost platform to demonstrate the potential of an optical wireless communications interface for underwater sensor nodes is demonstrated. To enhance the reliability and robustness of the optical wireless communication digital signal processing and error correction techniques are used. The system was tested in 3 and 7.7 meter tanks at 5 Mbps with the turbidity of the water controlled by the addition of Maalox.

IEC61850 Manager_4.0.2_Release_Notes

编写的基于LTE的SC_FDMA程序，其中包括调制、IFFT、子载波映射（分布式和集中式）、FFT及加CP。自己编写，可以运行。(LTE-based SC_FDMA written procedures, including modulation, IFFT, sub-carrier mapping (distributed and centralized), FFT, and plus CP. I have written, you can run.)

SSM: Slot Scheduling Mechanisms in a Multihop Wireless Hotspot Network

为了优化协作通信系统的性能 ,提出了一种基于信道容量增益的中继节点选取策略 ,并在此基础上提出了源节点和中继节点最优功率分配算法. 协作通信 中继节点选取 功率分配 凸优化(A joint optimization st rategy for relay selection and power allocation is proposed to optimize the performance of cooperative communication system.cooperative communication relay selection power allocation convex optimization)

数字通信技术的收集与介绍 希望对大家有用( Communicate)

matlab图像处理命令详细说明（中文版） 省去了看英文帮助文件的烦恼(Matlab image processing orders detailed description (Chinese version) save a document of English to help the trouble)

ONVIF协议， 大华摄像头SDK开发说明(ONVIF protocol, Da Hua camera SDK Development Notes)