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daimahekuangtu
- ，用MATLAB实现快跳频通信系统的仿真。主要应用了SIMULINK和COMMUNICATION BLOCKETS两个模块。整个设计包括了信源产生部分、发送部分、跳频调制部分、信道部分、接收部分和结果分析部分共六个模块，核心技术是伪随机序列的产生和频率合成器的设计，而关键技术是收发两端的伪随机码元的同步。伪随机码的产生用S－函数编程来开发自己的SIMULINK模块。同步的实现是收发两端采用相同的扩频脉冲触发。而且在设计中每个模块都采用了模块封装技术，从而简化了框图结构-Using MATLAB
RandomAccessProcedure
- 随机接入过程包括传输随机接入前导序列和随机接入响应。一个随机接入信道占用预留给随机接入前导传输的一个子帧或者多个连续子帧中的6个资源块。eNode B 没有禁止向预留给随机接入信道前导传输的资源块中进行数据调度。被高层调度到共享数据信道的剩余消息传输未包括在物理层随机接入过程中。-Random access process, including transmission random access preamble sequence and the random access response.
rayleigh-distribution-matlab
- In wireless communications, fading is deviation of the attenuation that a carrier-modulated telecommunication signal experiences over certain propagation media. The fading may vary with time, geographical position and/or radio frequency, and is often
wlan_transmitter
- WLAN仿真－发送机 wlan No Comments 设置完系统参数后，开始产生发送数据。 1. 产生随机的发送bit（tx_bits），这里不考虑信道编码。 2. QAM映射 3. 将数据映射到不同载波，形成OFDM符号 4. 产生pilot，并将pilot插入OFDM符号中 5. 加入dc和guard子载波 6. 进行ifft，将频域信号变到时域，并加入循环前缀 7. 对信号进行overlap window 8. 在时域产生short preamb
ZFL_eq_tap
- Zero forcing Equalizer random channel, input, noise
Bernoulli
- This Simulink model simulates as an example the transmission and reception of random digital data modulated with GMSK. The purpose of this model is to illustrate how part of the GSM transmission and reception works. It also measures the BER, affected
rayleigh
- 瑞利衰落信道（Rayleigh fading channel）是一种无线电信号传播环境的统计模型。这种模型假设信号通过无线信道之后，其信号幅度是随机的，即“衰落”，并且其包络服从瑞利分布。-Rayleigh fading channel (Rayleigh fading channel) is a radio signal propagation environment, the statistical model. The model assumed that after the signal
rf
- 跳频是按跳频序列随机改变一个信道所占有频道频率的技术。在GSM 系统中，可利用跳频技术频率分极和干扰分极的特点，改善网络质量。引入跳频技术，可保证在网络软拥塞不上升的情况下，频率复用度较小。-FH frequency hopping sequence is based on a random channel change in the country channel frequency technology. In the GSM system, can make use of frequenc
matlab_turbo
- 有关Turbo码的matlab仿真程序，包括信源，BSC编码，伪随机交织，打孔，信道仿真等。最重要的是LOGMAP算法，包含在logmapo.m.里面。这是VT的吴宇飞写的源码，我自己根据理解写了一个稍微简单点能理解的程序，在logmap.m里面 -Of the Turbo code matlab simulation program, including source, BSC code, pseudo-random interleaver, perforated, such as chann
This_one
- Cooperative communication_power control a) Generate random binary sequence of +1’s and -1’s. (b) Given different Power to the source and the relay as well (c) Multiply the symbols with the channel and then add white Gaussian noise. (d) At
LDPC
- 采用LDPC编码对随机的二进制序列进行纠错编码和基带调制，在AWGN信道上进行传输，然后在接收端并采用合适的方式进行解调和译码，最后对纠错编码的性能加以分析。-LDPC codes using random binary sequence of error-correcting coding and base-band modulation, for transmission in the AWGN channel, and then at the receiving end and use t
NEW
- Estimation Channel AWGN and selecting suitable modulation By SNR that obtain from channel and passing random signal to AWGN channel-Estimation Channel AWGN and selecting suitable modulation By SNR that obtain from channel and passing random signal to
performanceimprovementwithpredictivechannelselecti
- 基于信道的历史信息来预测不同信道的未来可用时间可以帮助CR选择一个最佳信道进行信息传递。不同的预测准则应用到周期或是随机的开关模式中。一个CR可以学习以往不同信道的模式。我们提出一个简单的分类和学习方法去检测模式的类型和收集需要的信息用于智能信道的选择。MATLAB仿真结果显示提出的方案在随机信道的随机和周期模式中都有优越的表现。随着时间的变化，新到的切换次数减少到55 ，并且延迟时间也相应减少，而吞吐量却在提高。-Prediction of future availability times
LTE_RACH
- LTE中随机接入信道的源代码分析，包括发送端和接收端-LTE in the random access channel of the source code analysis, including the sending end and receiving end
Channel_Estimation_Module
- 信道估计仿真，采用了多种方法：线性插值，MMSE，1惟MMSE,2维MMSE等-Channel Estimation 1 for non-block-wise linear interpolation, 2 for block-wise 1-D MMSE, 3 for non-block-wise 1-D MMSE, 4 for block-wise 2-D MMS
satish
- Avetis Ioannisyan avetis@60ateight.com Last Updated: 11/30/05 LMS Channel Adaptation reset randomizers randn( state ,sum(100*clock)) rand( state ,sum(100*clock)) numPoints = 5000 numTaps = 10 channel order Mu = 0
BER
- QPSK传输系统在随机高斯信道和瑞利衰落信道下的误码率计算。-QPSK transmission system in the random Gaussian channels and Rayleigh fading channel bit error rate.
monte-carlo
- QPSK通信系统的Monte Carlo仿真，采用汉明码，呈现了编码信号与未编码信号在随机信道中的传输-QPSK communication system Monte Carlo simulation, the use of Hamming codes, showing a coded signal and the signal is not encoded in the transmission of random channel
A-Channel-Assignment-Algorithm-for-Wireless-Mesh-
- Abstract—In this paper we propose the channel assignment scheme for multi-channel wireless mesh network (WMN), where each mesh router is equipped with multiple radio interfaces. In real WMN the number of radio interfaces is much higher than t
QAM-IN-AWGN-and-Random-channel
- Forward pictur by qam modulation and with/without Gray code and interleaveing in the AWGN and Random channel