Search - 802.11 channel

[matlab] 802.11b PHY Simulink Model

Description: 802.11b物理层的simulink建模。模型支持1Mbps, 2Mbps, 5.5Mbps, and 11Mbps 的模式，模型包括帧的生成，BPSK、QPSK调制，巴克码扩展，CCK以及信道频移量的选择和一个AWGN信道。使用说明：先将压缩包解压缩到一个新文件夹中，改变matlab当前执行目录，然后运行WiFi.mdl文件。压缩包中包括6个文件：WiFi.mdl，WiFi_lib.mdl，WiFi_init.m，cck_codes.mat，ber_test.m，test_level_1.m。模型使用标准：IEEE Std 802.11b-1999, 来源于: http://standards.ieee.org/reading/ieee/std/lanman/ -802.11b Physical Layer Simulink modeling. Model support 1Mbps and 2Mbps, 5.5Mbps and 11Mbps and model, model generation, including frames, BPSK, QPSK modulation, Barker Code expansion, CCK and channel frequency shift of choice and an AWGN. Use : first decompress compressed to a new folder and change the current implementation of Matlab directory, and then run WiFi.mdl document. Compressed include six documents : WiFi.mdl, WiFi_lib.mdl, WiFi_init.m, cck_codes.mat, ber_test.m, test_level_1.m. Standard Model : IEEE Std 802.11b-1999, from : http://standards.ieee.org/reading/ieee/std/lanman/
Platform: | Size: 35840 | Author: 飞的 | Hits:

[matlab] 02490r1P802-15_SG3a-Channel-Modeling-Subcommittee-

Description: UWB channel,802.15.3a建议的S_V信道-UWB channel, 802.15.3a proposed S_V Channel
Platform: | Size: 17185792 | Author: 陈立琴 | Hits:

[Communication-Mobile] ofdm_program_matlab

Description: 802.11a OFDM MATLAB仿真代码,包括OFDM映射,IDFT/DFT,同步(时间/频率同步)和信道估计,以及频率偏移的估计等一系列代码-802.11a OFDM MATLAB simulation code, including OFDM mapping, SINGLE/DFT, synchronous (time/frequency synchronization) and channel estimation, and the estimated frequency offset a series of code
Platform: | Size: 25600 | Author: 耿毅 | Hits:

[Communication] ieee802-15-4a-channel-model

Description: 802.15.4a 信道程序.为无线通信协议802.15.4a 建模.-802.15.4a Channel procedures. For wireless communication protocol 802.15.4a modeling.
Platform: | Size: 93184 | Author: lisi | Hits:

[Other] 802.11a_simulation_MATLAB_source_code

Description: 该文件夹给出802.11a仿真源程序，推荐参考-The folder is 802.11a simulation program, recommended reference
Platform: | Size: 27648 | Author: 张国梅 | Hits:

[Communication-Mobile] 802.11aOFDMbyMATLAB

Description: 很完善的一个OFDM仿真程序,它以FUNCTION的形式,再现了OFDM映射,IDFTDFT,同步(时间频率同步)和信道估计,以及频率偏移的估计等一系列代码.-very sound one OFDM simulation program, which is in the form FUNCTION, Reproduction of OFDM mapping, IDFTDFT, synchronous (time-frequency synchronous) and channel estimation, and the estimated frequency offset a series of code.
Platform: | Size: 27648 | Author: 钟伟 | Hits:

[3G develop] CHANNEL

Description: 本程序实现802.11a中信道的建模,语言为matlab-卤戮鲁脤脨貌脢渭脧脰802.11a脰脨脨脜渭脌渭脛陆篓脛拢, 脫茂脩脭脦陋 matlab
Platform: | Size: 1024 | Author: 徐小传 | Hits:

[Communication-Mobile] LS_SUI_ALA

Description: 抽头长度可变的802.11n信道估计方法.802.11n即将出台，无线网络将迎来革命。本程序是针对802.11n的TGN信道进行可变抽头估计的代码。-Variable length tap 802.11n channel estimation method .802.11 n upcoming wireless networks will usher in the revolution. This procedure is the TGN for 802.11n channel to tap the estimated variable code.
Platform: | Size: 1010688 | Author: 刘云 | Hits:

[matlab] 802.16fangzhen

Description: 802.16的信道建模和仿真，在Matlab上的原代码-802.16 channel modeling and simulation in Matlab on the original code
Platform: | Size: 12288 | Author: 李辉 | Hits:

[3G develop] 802.11a_ofdm_code

Description: 现在我终于找到了一份,它以FUNCTION的形式,再现了OFDM映射,IDFT/DFT,同步(时间/频率同步)和信道估计,以及频率偏移的估计等一系列代码.希望大家能从中得到你需要的东西. -Now I finally found a copy of it to the form of FUNCTION, reproduces OFDM mapping, IDFT/DFT, synchronized (time/frequency synchronization), and channel estimation, as well as the frequency deviation of the estimated range of the code. I hope that everyone will be you need.
Platform: | Size: 35840 | Author: 周致远 | Hits:

[matlab] 802p11TGn_ChannelModel

Description: matlab编写的802.11n的信道模型仿真-matlab prepared 802.11n channel model simulation
Platform: | Size: 38912 | Author: dingding | Hits:

[Program doc] 802.11-03940

Description: IEEE 802.11-03/940r4 IEEE P802.11 Wireless LANs TGn Channel Models -IEEE 802.11-03/940r4 IEEE P802.11 Wireless LANs TGn Channel Models
Platform: | Size: 481280 | Author: bailixia | Hits:

[Program doc] sim2

Description: wireless channel(802.11 MAC protocol) simulation using matlab
Platform: | Size: 1024 | Author: Biswajit Nath | Hits:

[Internet-Network] 802.11_Packet_Injection

Description: The network driver in this package provides a means for developers to create 802.11 packets in user space and send them on the 802.11 layer.
Platform: | Size: 119808 | Author: Truong minh | Hits:

[matlab] 802.11a

Description: 用matlab仿真实现802.11a通信系统。包括viterbi编解码，OFDM调制，解调。没有同步和信道估计-Simulation using matlab 802.11a communication system. Including the viterbi decoding, OFDM modulation, demodulation. No synchronization and channel estimation
Platform: | Size: 348160 | Author: Fengxiaodong | Hits:

[matlab] 802.16m-Channel-Model

Description: 802.16 channel model
Platform: | Size: 6144 | Author: honeywell12 | Hits:

[matlab] 802.11DCF

Description: 本文首先通过Bianchi模型，对标准DCF算法的性能作出全面定量分析，然后提出提高无线接入点通信能力的DCF改进算法，同时还提出改进算法的二维离散时间Markov模型并作了定量分析。随后设计原协议和改进协议的仿真算法，并使用Matlab仿真工具进行算法的仿真实验，并对它们的仿真结果作对比。理论和仿真结果都证明改进算法可以大幅度提高网络整体性能。在对标准DCF算法作性能分析的过程中，作者注意到网络的性能随活动无线节点数量的增加衰减较快。主要原因在于网络负载较大时，冲突发生率高，但可以通过加快竞争窗口增加速度来减小冲突发生率，于是设计了基于活动无线节点数量的自适应X进制退避算法。随后作出的理论与仿真结果都证明这种算法可以在活动节点数量较大时一定程度上提高网络性能 -In this thesis, the performance of the original IEEE 802.11 DCF is quantitatively analyzed through Bianchi’s model. Whereafter an approache to alleviate this problem is proposed. Theoretical analysis and related simulations is performed. The results show that our proposed methods can improve DCF perofrmance in WLAN by a large margin (compared with the original standard). In the process of analyzing the performance of the original DCF, another problem was heeded that the DCF performance reduces with increasing number of active stations in the network.The main reason of this problem is the high probability of collision, when the load of the network is high. This problem can be solved by speeding up the process of contention window incressing. A new algorithm is designed in which the active stations can adapt their backoff exponent to the channel conditions dynamically. The theoretical analysis is performed and its accuracy is valuated by related simulations.The effective througuput of t
Platform: | Size: 2873344 | Author: liming | Hits:

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