msk_modulator_2008_06_22

说明：  ：载波频率偏移是OFDM系统实现的关键问题之一。分析了OFDM 系统载频偏移估计的2 种算法，即利用循环前缀和训练序列方法。它们均为最大似然估计方法。分别讨论了它们的基本 思想、实现方法和仿真结果。可以看出基于循环前缀算法复杂度较小，精度不高，而基于训练序列 的算法有较高的估计精度，但降纸了系统传输效率。(Abstract：Carrier frequency ofset is one of the key problems in OFDM system．Two foundational methods 。cycling prefix—based and training sequence—based algorithms。to estimate OFDM carriers~equency ofset are analyzed．Then it discusses their basic thoughts。implementing methods and simulation resuits． Finally。merits and demerits of every algorithm are supposed．It concludes that the cycling prefix— based algorithm has less complexity and less precision。and that the training sequence—based algorithm has better estimation performance at the cost of transmission efficiency．)

非合作博弈论在认知无线电中的功率控制方法探讨 (Non-cooperative game theory in cognitive radio power allocation)

the pdf entitled The Modulo Lattice Channel The Key Feature in Precoding is attached

分析仿真了LTE-Advanced系统部署Pico后的小区间干扰协调技术.本文针对在LTE—Advanced系统中部署Pico后恶劣的干扰条件进行了详细的分析，并重点讨论了三种可以有效兼容R8／R9终端的增强型ICIC技术。(Analysis and simulation of LTE-Advanced systems deploy Pico Inter-cell interference coordination techniques for LTE-Advanced systems deploy Pico bad interference conditions, carried out a detailed analysis, and focused on the three can be effectively compatible with R8/R9enhanced terminal ICIC technology.)

现代通信原理与技术课件，讲明通信原理，调制解调以及通信的过程。(Modern communication theory and technology courseware, made ​ ​ it clear that the process of communication theory, modulation and demodulation and communication)

循环平稳入门讲解，关于循环平稳常用的参数，简单易懂(It is simple and easy to understand the commonly used parameters of circular stationary.)

华为GTM900AT命令手册，对开发GPRS具有指导意义(Huawei GTM900 AT command manual，It has a guiding significance to develop GPRS )

一篇介绍OFDM信号在光纤信道中的传输的文章。理论分析非常详实。使用matlab和VPI联合仿真。matlab代码附在文章后面。(Article article OFDM signal in fiber channel transmission. The theoretical analysis is very informative. Using matlab and VPI joint simulation. The matlab code attached to the end of the article.)

gardner位同步算法，实现数字通信系统中位同步(gardner bit synchronization algorithm to achieve bit synchronization in a digital communication system)

在TOA测距的基础上，提出了一种三维无线传感器网络节点定位算法，并对其性能进行了分析，给出了算法的时间同步误差和定位误差。最后在现有仿真平台OMNET++的基础上构建三维仿真模块，对算法进行了仿真实现，给出了该算法的定位精度和覆盖率(This paper proposes one three-dimensional localization algorithm based on TOA distance measurement and analyzed the performance of the algorithm calculated time synchronization error and localization error. Finally it constructed three-dimensional simulation modules based on OMNET++ and implemented the algorithm educed the localization precision and coverage.)