UDP

SIGNAL DETECTION FOR SPECTRUM SENSING Spectrum sensing is a critical functionality in cognitive radio communications as it must be performed before allowing unlicensed users to access a vacant licensed band. Energy detector is also known as radiometer and it is most common method of spectrum sensing because of its low computational and implementation complexities. The coherent detector, also referred to as a matched filter, can improve detection performance if the primary transmitted signal, s, is deterministic and known a priori.

B-IFDMA pdf document

BP神经网络用于函数拟合与模式识别，基于SVPWM的三电平逆变的matlab仿真，包括压缩比、运行时间和计算复原图像的峰值信噪比。( BP neural network function fitting and pattern recognition, Based on SVPWM three-level inverter matlab simulation, Including compression ratio, image restoration computing uptime and peak signal to noise ratio.)

公交非接触IC卡读写器的应用设计采用PHILIPS公司的Mifare卡作IC卡，设计以射频技术为核心，以单片机为控制器的IC卡读写器在公交自动收费系统中的应用。制作的IC卡读写器可以实现制卡、售卡、自动收费等功能，具有安全、实用、方便、快捷、可靠性高的特点，解决了城市公共交通服务行业既频繁又琐碎的收费管理问题，有广泛的应用前景。(Bus non-contact IC card reader applications designed using the Philips Mifare cards for IC cards, designed to RF technology as the core, microprocessor controller IC card reader automatically charges the transit system applications. The production of IC card reader card system can be achieved, A file, automatic charges and other functions, is safe, practical and convenient, fast and high reliability features to solve the urban public transport sector is also frequent charges trivial issues, a broad range of applications.)

Final Project Proposal: Design Smart Parking System Based on WSN Using Delay Efficient Distributed Data Aggregation Algorithm

说明：  一种基于独立分量分析的改进算法． 可用于瞬时混合的盲分离．(based on independent component analysis algorithm improvements. For transient mixed Blind separation.)

TCPIP协议详解卷三：事务TCPIP协议详解卷三：事务TCPIP协议详解卷三：事务(TCPIP protocol Xiangjie Makizo: Services TCPIP protocol Xiangjie Makizo: Services TCPIP protocol Xiangjie Makizo: Services)

说明：  文件提供了通信中自适应波束形成的matlab程序，根据到达的来波方向，自适应的调节形成波束的主瓣方向，程序给出了自适应的过程和最后的波束图。(document provides communications adaptive beamforming of Matlab procedures, according to the arrival of wave direction, the regulation of adaptive beam forming the main valve direction, the procedure is the process of adaptive beamforming and the final map.)

W5100 spi connect describe

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.