OFDM_CE

本章介绍了用于WAN(广域网)环境的各种协议和技术。在这里概述的题目包括点对点链路，电路交换，分组包交换，虚电路，拨号服务，和WAN设备。在手册第3部分,‘WAN协议’,的各章里将更详细地讲述专门技术。 ( This article introduces the various protocols and technologies used in wide-area network (WAN) environments. Topics summarized here include point-to-point links, circuit switching, packet switching, virtual circuits, dialup services, and WAN devices. Chapters in Part 3, “WAN Protocols,” address specific technologies in more detail. )

MIMO system...... it employs almouti code using STBC to achive diversity

介绍如何对NS2进行多信道多接口扩展，并支持动态信道分配。(NS2 introduce how to carry out the expansion of multi-channel multi-interface, and supports dynamic channel allocation.)

说明：  BER Probability for QAM

说明：  对称振子方向图函数，天线阵函数，微波技术与天线(Symmetrical dipole pattern function, antenna array function)

说明：  MATLAB code for power allocation in V2X networks using SDR and beamforming

LMS算法仿真，LMS算法是智能天线波束形成的重要算法之一，在智能天线系统中得到了广泛的应用。(LMS algorithm simulation, LMS algorithm is an important smart antenna beamforming algorithm is one of the smart antenna system has been widely used.)

准循环ldpc编码在matlab上的实现(Quasi-cyclic ldpc coding in matlab on the realization of)

wcdma上行扰码生成，严格按照3gpp 25212进行编写，有多种实现方式(wcdma uplink scrambling code generation, in strict accordance with 3gpp 25212 to write, there are a variety of ways)

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.