opticalcommunication1

QPSK开环载波同步技术研究 频偏估计算法(Open-loop carrier synchronization QPSK Research Frequency Offset Estimation Algorithm)

comparaison of photovoltaic mppt algorithms

说明：  repeat-accumulate codes (RA codes)

In recent years, the number of portable mobile terminal users is increasing with improvement of the wireless communication environment. In addition, mobile multimedia services also bring the increase of wireless traffic and lack of spectrum resources. As a technique for efficient spectrum use, spectrum sharing receives much attention. It dynamically assigns a spectrum channel from a larger area network such as WiMAX to smaller area networks such as WiFi-based wireless LANs and achieves to increase the total wireless communication capacity of this area. In a case where all providers are cooperative, the spectrum sharing can be realized easily and improve user throughput in average. In another case where providers are not cooperative, some spectrum trading methods based on auction theory had been proposed.

John Wiley & Sons - IP-Based Next-Generation Wireless Networks

说明：  S7200 通过modbus 通讯与多块表通讯 定时轮询(Reading multi block instrument timing polling)

At the beginning of 2004, the standards for third generation (3G) cellular technology were embodied in 483 Technical Specifications published by the two Partnership Projects: 3GPP and 3GPP2.

有关CC2430的文档，里面的东西很实用，希望对你有帮助(The CC2430 document, which is very useful stuff, want to help you)

是c语言的编程指导手册，分为基础篇和函数篇，使编程人员能快速查找函数等的使用方法。(This is the C language programming guide, divided into basic function and using method, so programmers can quickly find the function. The C language is a programming guide, divided into basic function and using method, so programmers can quickly find the function and so on. )

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.