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【Communication-Mobile】 jakesModelChannel DL : 0: Flat fading time-varying channel using Jakes Model
Update : 2024-05-19 Size : 60416 Publisher : gunkaragoz
【Books】 the_environment_of_wireless_broadcasting DL : 0: 移动传播环境:理论基础分析方法和建模技术杨大成编著内容包括：理论分析移动传播环境所常用的概率论、随机过程及矩阵等基础知识；地球表面均匀大气中的电波传播、室外传播模型，室内无线传播及覆盖，小尺度衰落信道，标量信道建模及其仿真，矢量信道建模及其仿真等。 -Mobile communication environment: theory analysis and modeling Yang Dacheng edited include: theoretical analysis are commonly used in mobile communication environment, probability theory, stochastic processes, and basic knowledge of matrix Earth' s surface wave propagation even in the atmosphere, outdoor propagation model, indoor wireless transmission and coverage, small-scale fading channel, the scalar channel modeling and simulation, vector channel modeling and simulation.
Update : 2024-05-19 Size : 3700736 Publisher : 鼻涕虫
【Other】 2 DL : 0: 要：分析和研究了授权用户和认知用户共享频谱的一种算法的性能。针对阴影效应或信道深衰落时，单用户频谱感知算法无法识别是频带未被使用还是信道处于深衰落的情况，在频谱感知功率控制算法上进行了改进，以克服这种算法的不足。改进后的算法能有效地控制认知用户的发射功率，避免对授权用户产生有害的干扰。仿真结果表明改-To: analysis and research of the authorized users to share spectrum users and a cognitive performance of the algorithm. For the shadow effect or deep fading channel, the single-user spectrum sensing algorithm can not identify a band or a channel has not been used in the case of deep fading, the spectrum sensing power control algorithm has been improved on, to overcome the deficiencies of this method. The improved algorithm can effectively control the cognitive user' s transmit power, to avoid harmful interference with authorized users. Simulation results show that the change
Update : 2024-05-19 Size : 373760 Publisher : 刘德龙
【3G develop】 SIMULATION DL : 0: Linear time varying Channel estimation using zero forcing algorithm describes bit error rate and signsl to noise ratio to analyse channel conditions of wireless communications
Update : 2024-05-19 Size : 5120 Publisher : Selvakumar
【3G develop】 channel DL : 0: 仿真了4种常见多径衰落信道，包括无人机信道-The four common multipath fading channel, including the uav channel
Update : 2024-05-19 Size : 2048 Publisher : cj
【Internet-Network】 LT DL : 0: 喷泉码译码过程， MATLAB 编写， BEC信道-Fountain code decoding process, MATLAB preparation, BEC channel
Update : 2024-05-19 Size : 1024 Publisher : 毛月薪
【Compress-Decompress algrithms】 GSM-FS-Simulation-of-channel-coding DL : 0: 本次设计是对GSM TCH/FS信道进行编码设计及性能仿真,仿真通信系统包括内外编码器、交织重排器、加性/突发和混合干扰信道、去交织反重排器、内外译码器，模拟了信息从信源到信宿的全过程；在高斯噪声、突发干扰或混合信道及瑞利信道下测试每个步骤对误码率和系统性能的影响，通过数字及图形的比较，得出通信系统中各个模块的作用。另外，在GSM TCH/FS 的基础上建立GSM TCH/EFS 信道，对相应的信道环境进行仿真，得出误码率分析。-This design is the GSM TCH/FS channel encoded design and performance simulation, simulation communication system, including internal and external encoder, interleaving rearrangement device, the additive/burst and mixed interference channel, to the cutting device against rearrangement, internal and external decoding and analog information from the source to the destination of the whole process in Gaussian noise, sudden disruption or mixing channel and Rayleigh channel to test each step of the bit error rate and system performance, by comparison of digital and graphic obtained communication systems the role of each module. In addition, GSM TCH/FS based on the established GSM TCH/EFS channel, the corresponding channel environment simulation, the error rate analysis
Update : 2024-05-19 Size : 62464 Publisher : 金莉
【Communication-Mobile】 2i2oand2i1o DL : 0: 2发1收与 2发1收的比较实验次数 2000次，采用LS进行信道估计，ML进行译码，导频符号长度为10 -2 receive and 2 send a send a receive 2,000 times the number of comparative experiments, using LS channel estimation, ML decoding, pilot symbol length of 10
Update : 2024-05-19 Size : 9216 Publisher : 李世杰
【Software Engineering】 RAKE_FPGA DL : 0: RAKE技术与CDMA系统相结合，能够带来系统容量和通信质量的极大提高。根据军事通信中对设备便携性及低功耗的特殊要求，本文研究了一种便携式基站的收发系统，重点研究了其中的RAKE接收部分。给出了系统的发送方案和接收方案，对接收机部分所涉及的关键技术和算法，包括数字下变频技术、匹配相关技术、多径搜索技术、信道估计技术、解调及多径合并技术进行了较为详细的分析和说明。在此基础上，运用VHDL语言进行了硬件平台上FPGA部分的功能实现，并对整个系统进行了调试，给出了一些相关的仿真及测试结果。最后对该系统还需进一步研究的问题进行了简要的介绍，对调试过程中的出现的一些问题进行了简单的分析和小结。 -CDMA system with RAKE combining technology, can bring the system capacity and communication quality significantly raised High. According to military communications equipment portability and low power consumption special requirements, this paper, a portable The base station transceiver system, which focuses on the RAKE receiving part. Then the system sends the program and Receiving scheme, the receiver part of the key technologies involved and algorithms, including digital down-conversion technology, matching the relevant technology, multi-path search and channel estimation, demodulation and multi-path merging techniques on a more detailed analysis and explanation. On this basis, the use of VHDL, FPGA hardware platform to achieve some functionality, and debugging the system, given some of the relevant simulation and test results. Finally the system need further study are briefly introduced, and the emergence of the process of debugging some problems in a simple analysis and summar
Update : 2024-05-19 Size : 2499584 Publisher : 徐进
【3G develop】 ofdm DL : 0: 对OFDM通信系统进行仿真，使用AWGN信道，生成误码率与信噪比的仿真图形，并与理论图形进行比较-The simulation of the OFDM communication system, using the AWGN channel, BER and SNR generated graphic simulation, and compared with the theoretical graph
Update : 2024-05-19 Size : 2048 Publisher : 冉茶宗
【Internet-Network】 qpsk DL : 0: 要求对有3条固定路径的AWGN多径信道中的QPSK系统进行BER性能仿真，并与在理想的AWGN信道中同样系统的BER性能进行比较。熟悉瑞利平坦衰落、莱斯平坦衰落与频率选择性衰落的特点，比较这些衰落信道的误码率。-Required to have three fixed-path AWGN multipath channels of QPSK system BER performance simulation, and in an ideal AWGN channel with the same system BER performance comparison. Familiar with the Rayleigh flat fading, Rice flat fading and frequency selective fading characteristics, compare the bit error rate fading channel.
Update : 2024-05-19 Size : 1024 Publisher : 沈岗
【Communication-Mobile】 DCA_simulator_v6 DL : 0: this file describe a new model for Dynamic Channel Allocation
Update : 2024-05-19 Size : 2048 Publisher : kt
【matlab】 Rayleigh DL : 0: MATLAB的瑞利衰落信道仿真，针对服从瑞利分布的多径信道进行模拟仿真，加深对多径信道特性了解。-Channel Emulation of Rayleigh fading by using MatLab,which is aimed at the Multipath Propagation channel that obey Rayleigh distribution, so it could be furthered comprehension of characteristic on the Multipath Propagation channel.
Update : 2024-05-19 Size : 226304 Publisher : 林俊
【Communication】 Alamouti_16QAM_22_correlation DL : 0: Alamouti空时编码，2*2相关信道，16QAM。-Alamouti Space Time Coding, 2*2 correlation channel, 16QAM.
Update : 2024-05-19 Size : 2048 Publisher : 赵东艳
【Communication-Mobile】 ofdm_fangzheng DL : 0: ofdm仿真程序，包括发射机和接收机两个部分，信道估计，-ofdm simulation program, including the two parts of the transmitter and receiver, channel estimation,
Update : 2024-05-19 Size : 1024 Publisher : tang
【Communication-Mobile】 16QAM-OFDM DL : 0: 基于16QAM调制解调的OFDM信道估计，计算了不同信噪比下的误码性能曲线，并画出了图。-Comb based on the OFDM pilot channel estimation, calculation of the BER performance under different signal to noise ratio curve, and draw the map.
Update : 2024-05-19 Size : 1024 Publisher : tang
【Special Effects】 DualchnnelPCNN DL : 1: 通过双通道PCNN来实现多源图像融合，算法简单易于实现-image fusion using dual channel PCNN
Update : 2024-05-19 Size : 1024 Publisher :
【matlab】 Codes DL : 0: The main code is called "comparison of equalization schemes". It uses functions, defined seperately to compute the bit error rate for different typs of equalizers. That means times domain equalizer (TDE) with minimum mean square (MMSE) and zero forcing (ZF) algorithm,time domain decision feedback equalizer (DF_TDE) and linear frequency domain equalizer (FDE) with MMSE and ZF algorithms are used.For all simulations QPSK symbols and a tapped delay line channel with white gaussian noise are used. Allthough the codes should be regarded as one package every single function can be of good use for other simulations. With best regards, Andreas
Update : 2024-05-19 Size : 6144 Publisher : Sokolov
【Other】 wcdmaQpskAndSpread DL : 0: 几点说明： 1、source_main.m为主函数，qpsk.m和spread.m为子函数； 2、在matlab工程目录下运行source_main.m即可； 3、为方便大家理解，特以P-CCPCH信道的处理进行了举例，若大家认为资料有用的话请回帖，我会将整个WCDMA下行信号源的matlab代码提供给需要的人； 4、为方便初学者学习，特提供了我自己开发时参考的3GPP资料，并在关键位置做了记号。 -Some explanations: 1, source_main.m main function, qpsk.m and spread.m as Functions 2, matlab project directory can be run source_main.m 3, to facilitate us to understand, especially for P-CCPCH channel processing of the example, if we consider the information useful, please Replies, I will put the WCDMA downlink signal source matlab code available to people in need 4, for the convenience of beginners to learn, especially when providing a reference to my own development 3GPP information, and in key positions in the mark.
Update : 2024-05-19 Size : 205824 Publisher : 卢婷
【Program doc】 gtxsheji DL : 0: 本论文在简要阐述了各种光纤数字传输系统技术及其原理的基础上，通过比选确定出了符合钦州至崇左路段的较先进的光纤数字传输系统方案，确定其光纤通信系统采用SDH传输方案。在SDH传送网分层模型的基础上，对SDH传送网各层功能、信号流程、网络配置作了详细的阐述，同时说明了SDH传送网特有的复用映射原理。根据钦州至崇左路段的实际情况计算确定了系统中的重要参数，选择出了网络拓扑结构，按最坏值设计法进行了中继段长度的计算，编制了网络组织图、通道组织图及通信系统总体框图等。所设计的的高速公路光纤数字传输系统达到了能够同时传输语音、数据及图像的要求，并且满足了容量要求，实现了与相邻高速公路通信系统的相互连接。-The article,through compared to elects to determine,has conformed to Qinzhou to the Chongzuo road section ,which advanced optical fiber digital transmission system plan, had determined the optical fiber communications system using the SDH transmission plan in the principle foundation.In the SDH transmission network model foundation, each function of SDH transmission network,the signal flow simultaneously explained the SDH transmission network which uniqued multiplying mapping inciple.The computation had determined the system important parameter,had carried the worst value design law,the channel drafted pattern and the communications system overall diagram and so on. The highway optical fiber digital transmission system, hadbeen designed had achieved simultaneously transmiting the pronunciation on,the data and the image requestion has satisfied the capacity which has realized neighboring highway communications system mutual connection. Keywords： Expressway communication system O
Update : 2024-05-19 Size : 851968 Publisher : lsj

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