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wodewodewode
- 对于移动通信系统主要有两类衰落：大规模衰落和小规模衰落。大规模衰落表示由于大范围内移动而引起的平均信号能量的减少或路径损耗。而小规模衰落则表现为两种机制：信号的时延扩展和信道的时变特性。对于无线应用，信道的时变特性是由于发射机和接收机相对移动而造成传输路径的变化。这些传播条件的变化速率影响衰落率。如果存在大量反射路径而不存在视行信号分量，此时的小规模衰落称为瑞利衰落(Rayleigh fading)，接收信号的包络由瑞利概率分布函数统计描述。这种衰落也就是这次实验我准备研究的-system fo
Delay_spreadRMS
- 本matlab文档进行了LTE系统中对于无线信道的参数均方根时延扩展的具体计算方法，将多径信道中的各路时延与参数rms联系起来。-The matlab document the LTE system, the parameters for the wireless channel rms delay spread of the specific calculation method, the multipath channel parameters of the brightest and th
Prog_OFDM
- 应用OFDM可以有效地对抗多径时延扩展。循环前缀不仅可以消除符号间干扰（ISI），还能消除子载波间干扰（ICI).本项目完整地仿真了OFDM系统。-Application of OFDM can effectively combat multipath delay spread. Cyclic prefix can not only eliminate inter-symbol interference (ISI), can eliminate Inter-carrier interfer
IEEE_UWB_recommend_matlab-simulation
- 该压缩包包括两个m文件，一个为IEEE推荐的UWB信道模型的matlab仿真程序，另一个为对应的RMS时延扩展计算，并附带了一个文档文件作说明。-The archive includes two m files, one for the IEEE UWB channel model recommended by the matlab simulation program, and the other for the corresponding calculation of RMS delay s
DelaySpreadMCCDMA
- This program used to show the the effects of delay spread in MC_CDMA Transceiver systems.- This program used to show the the effects of delay spread in MC_CDMA Transceiver systems.
dsss_signal_detection_and_parament_estimate
- 自相关检测方法是利用信号和噪声在相关域上的差别来构造检测器的。自相关检测是将信号与自身延迟一个时延后的信号作相关处理，或用双通道接收机的输出进行相关，得到扩频信号的自相关函数-Auto-correlation detection method is the use of signal and noise in the relevant field to construct the difference detector. Autocorrelation test is a time delay
CDMApreadspectrumcommunicationinmultipathtimedelay
- CDMA扩频通信在多径时延展宽作用下的误码特性-CDMA spread spectrum communication in multipath time delay spread of the BER performance under
ADifferentiallyCoherentDelay-LockedLoopforSpread-S
- 详细讲述了直接序列扩频差分锁相环的文章，包含具体的算法结构，并附有仿真结果。-A novel differentially coherent delay-locked loop(DCDLL) for accurate code tracking is proposed for direct sequence spread spectrum systems. Due to the use of the differential decoder and exactly one correlato
CalcDelay
- 计算无线衰落信道平均时延扩展和均方根时延扩展-delay spread and square delay spread calculation code
16QAM_Delay-spread
- 16QAM调制信号经过多径信道时延分别为0、8和20个采样点下，比较空白前缀与循环前缀下的性能。-16QAM modulation signal through the multipath channel delay were 0,8 and 20 sampling points, compare the performance blank prefix and the cyclic prefix.
SBOCCrare
- 几个BOC 信号的分析例程，全球卫星导航系统将普遍使用BOC调制信号作为扩频测距信号，BOC信号号自相关函数呈现多个相关峰，传统扩频接收机所用的延迟锁定环（DLL）无法对该信号正确地进行码相位的 -Several BOC signal analysis routines, the global satellite navigation system will generally use the BOC modulation signal as a spread spectrum rangin
delay
- 通信原理matlab仿真时延扩展仿真适用各种环境-Communication Principles Simulation of delay spread matlab simulation for a variety of environments
ImageFadeTwo
- 利用visua c++语言实现图像的切换特技。图像的切换特效主要函数是延时函数和spread()函数等。详细内容见代码。-The image switch stunt utilize the visua c++ language. The main function of image transition effects delay function and spread () function, etc.. Details, see the code.
xindao-
- 衰落是由于发射机与接收机之间空间位置的微小变化引起的，描述小范围内接收信号场强中瞬时值的快速变化特性，是由多径传播和多普勒频移两者共同作用的结果，包括由多径效应引起的衰落和信道时变性引起的衰落，具有信号的多径时延扩展特性和信道的时变特性-Fading is caused due to a slight change of the position of the space between the transmitter and the receiver, the characteristics
OFDM--effectively-against--delay
- OFDM can be effectively against multipath delay spread
NLOSCDbijiao
- 室外定位基于时延扩展信道模型的五种信道环境CDF比较图-Outdoor positioning delay spread channel model based on the five channel environment CDF comparison chart
first_measurement_rms_data
- how to calculate the rms delay spread in a power delay profile
qw
- 无线信道时延扩展仿真 一、仿真目的 在数字通信中，无线信道所表现出的时延扩展将有可能引起接收信号的码间串扰。实验的目的是从时域角度方面对移动信道的多径环境引起的接收信号时延扩展现象进行仿真。-wireless channel delay spread simulation One, the simulation purpose In digital communication, wireless channel delay spread shown will l
ds
- returns the rms delay spread
test
- 求一些信号的均方根时延扩展、信道衰弱速率(Seeking root mean square delay spread of some signals)