Description: stunnel_server.rar是一个服务器端的程序，它采用的是证书认证机制，采用ssl安全传输通道-stunnel_server.rar is a server-side procedures, it is the certificate of authentication mechanism used ssl secure transmission channel Platform: |
Size: 14506 |
Author:阿健 |
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Description: 基于UDP实现简单的可靠数据传输
由于数据是在不可靠的信道上传输的，因此数据在信道上传输时可能会发生比特错误，数据丢失。Rdt3.0及之前的版本都是停止—等待协议，它限制了网络底层硬件的能力。为克服这个问题引入了流水线技术，两个能恢复流水线中的错误的基本方法：第N个分组重发和选择性重复。综上，要实现差错编码，顺序号，计时器，分组确认，滑动窗口，拥塞控制。-simple UDP based on the reliable data transmission of data is not reliable transmission of the channel, therefore the data transmission channel may occur bit error, data loss. Rdt3.0 and earlier versions are stop-wait for the agreement, which limits the underlying network hardware capabilities. To overcome this problem the introduction of pipeline technology, both of which can restore pipeline error in the basic methods : section N to a re-issued and selective repeat. In sum, to achieve error coding, sequencing, the timer, a confirmation, sliding window, congestion control. Platform: |
Size: 124739 |
Author:周崇青 |
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Description: 这是正弦信号的图象，付氏变换，以及功率普密度分析，这是信道传输的基础-This is the image sinusoidal signal, Fourier transform, and the general power density analysis, this is the transmission channel basis Platform: |
Size: 1500 |
Author:李彩 |
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Description: gsm tch/fs语音信道传送接收过程仿真，包括外编码卷积码交织过程，仿真得到语音信号的误码率曲线。-gsm / fs voice transmission channel receiver process simulation, including the encoding process convolutional codes are intertwined, Simulation is the voice signal BER curves. Platform: |
Size: 5524 |
Author:梅岩 |
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Description: ofdm信道特性
Channel transmission simulator
Channel transmission simulator
％
％ inputs:
％ sig2 - noise variance
％ Mt - number of Tx antennas
％ Mr - number of Rx antennas
％ x - vector of complex input symbols (for MIMO, this is a matrix, where each column
％ is the value of the antenna outputs at a single time instance)
％ H - frequency selective channel - represented in block-Toeplitz form for MIMO transmission
％ N - number of symbols transmitted in OFDM frame
％
％ outputs:
％ y - vector of channel outputs (matrix for MIMO again, just like x matrix)
％ create noise vector sequence (each row is a different antenna, each column is a
％ different time index) note: noise is spatially and temporally white Platform: |
Size: 812 |
Author:sunxu |
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Description: 利用哈夫曼编码进行通信可以大大提高通信信道利用率，缩短信息传输时间，降低传输成本。这要求在发送端通过一个编码系统将传输数据预先编码；在接收端将传来的数据进行译码（复原）。对于双工信道（即可以双工传输信息的信道），每端都需要一个完整的编/译码系统。为这样的信息收发站设计的一个哈夫曼编/译码系统。-use Huffman coding communication can greatly enhance communication channel utilization, reduced transmission time, and lower transmission costs. This requires the transmitter through a coding system will transmit data in advance coding; The receiving end of the data came decoding (recovery). For dual-channel (that is, information can duplex transmission channel), each side needs a complete encoding / decoding system. For this information hubs designed a Huffman encoding / decoding system. Platform: |
Size: 2081 |
Author:cuckoo |
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Description: For the simulation of a GSM transmission channel it was decided to use an information channel TCH (Traffic Channel) with high speed (Full Speed).
This type of channel allows a rate of 13 Kbps. In order to create the model of TCH channel for GSM the specifications of group 3GPP were followed which are listed in [ 3GPPd ] -[3GPPg ], which they comprise of the European standard of GSM.
Platform: |
Size: 72515 |
Author:zhouzheng_xd |
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Description: 该程序是用matlab语言实现的关于瑞利信道多径传输的多谱勒效应的描述-that the procedure was used Matlab language on the Rayleigh Channel multipath transmission of the description of Doppler effect Platform: |
Size: 3072 |
Author:火箭 |
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Description: gsm tch/fs语音信道传送接收过程仿真，包括外编码卷积码交织过程，仿真得到语音信号的误码率曲线。-gsm/fs voice transmission channel receiver process simulation, including the encoding process convolutional codes are intertwined, Simulation is the voice signal BER curves. Platform: |
Size: 5120 |
Author:梅岩 |
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Description: 实现了信道编码，包括内编码（维特比），外编码，内译码，外译码，实现了近似的信道传输模型，并计算出信噪比等指标-Realize a channel coding, including within the coding (Viterbi), outside the coding, decoding within outer decoder to achieve a similar channel transmission model and calculate the signal to noise ratio and other indicators Platform: |
Size: 16384 |
Author:yinbo |
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Description: ofdm仿真程序有关信道传输中的多径效应，多普勒频移，时延扩展-OFDM simulation program on the transmission channel of multi-path effects, Doppler frequency shift, delay spread Platform: |
Size: 1024 |
Author:时光 |
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Description: ofdm信道特性
Channel transmission simulator
Channel transmission simulator
％
％ inputs:
％ sig2 - noise variance
％ Mt - number of Tx antennas
％ Mr - number of Rx antennas
％ x - vector of complex input symbols (for MIMO, this is a matrix, where each column
％ is the value of the antenna outputs at a single time instance)
％ H - frequency selective channel - represented in block-Toeplitz form for MIMO transmission
％ N - number of symbols transmitted in OFDM frame
％
％ outputs:
％ y - vector of channel outputs (matrix for MIMO again, just like x matrix)
％ create noise vector sequence (each row is a different antenna, each column is a
％ different time index) note: noise is spatially and temporally white-channel characteristics of OFDM Channel transmission simulatorChannel transmission simulator inputs: sig2- noise variance Mt- number of Tx antennas Mr- number of Rx antennas x- vector of complex input symbols (for MIMO, this is a matrix, where each column is the value of the antenna outputs at a single time instance) H- frequency selective channel- represented in block-Toeplitz form for MIMO transmission N- number of symbols transmitted in OFDM frame outputs: y- vector of channel outputs (matrix for MIMO again, just like x matrix) create noise vector sequence (each row is a different antenna, each column is a different time index) note: noise is spatially and temporally white Platform: |
Size: 1024 |
Author:sunxu |
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Description: 前面搞错了,把五个文件一起打包上传了,现在一个一个传
预加重声波在噪声信道内传输 模拟程序
程序头上有详细的注释和使用说明-Made a mistake in front of the pack with five file upload, and now a mass of a pre-emphasis acoustic noise within the transmission channel simulation program procedures detailed head notes and use Platform: |
Size: 9216 |
Author:Hui Liu |
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Description: 在matlab中的ofdm的编程，包括数据生成，调制，数据传送，频道干扰，解调，数据接收，并且计算误码率，把误码率用图像的形式表现出来。-In the OFDM matlab programming, including data generation, modulation, data transmission, channel interference, demodulation, data receiving, and calculating the BER, the BER image forms. Platform: |
Size: 3072 |
Author:liulin |
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Description: 覆盖了全书的信号与线性系统、随机过程、模拟调制、模拟数字转换、基带数字传输、带限信道的数字传输、载波调制的数字传输、信道容量和编码、扩频通信系统以及数字调制方法的SIMULINK仿真的 源代码-Book covers the signal and linear systems, stochastic processes, analog modulation, analog-to-digital conversion, base-band digital transmission, band-limited digital transmission channel, the digital transmission carrier modulation, channel capacity and coding, spread spectrum communication systems, and digital modulation SIMULINK simulation method source code Platform: |
Size: 89088 |
Author:xiehui |
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Description: 关于语音处理的英文书籍，其中特征提取部分（MFCC）讲解的很好很详细-The performance of speech recognition systems receiving speech that has been transmitted over mobile channels can be
significantly degraded when compared to using an unmodified signal. The degradations are as a result of both the low
bit rate speech coding and channel transmission errors. A Distributed Speech Recognition (DSR) system overcomes
these problems by eliminating the speech channel and instead using an error protected data channel to send a
parameterized representation of the speech, which is suitable for recognition. The processing is distributed between the
terminal and the network. The terminal performs the feature parameter extraction, or the front-end of the speech
recognition system. These features are transmitted over a data channel to a remote "back-end" recognizer. The end result
is that the transmission channel does not affect the recognition system performance and channel invariability is achieved. Platform: |
Size: 101376 |
Author:gqy |
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Description: 对OFDM传输信道的仿真，用matlab仿真了几个信道的衰减模型-For OFDM transmission channel simulation, using matlab simulation of a number of channel attenuation model Platform: |
Size: 10240 |
Author:mao |
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Search - transmission channel