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Description: 3G里使用的Spreading技术演示仿真。用于教学演示的Matlab模型。A demo of spreading code generation and modulation used in 3G.-3G Lane Spreading the use of simulation technology demonstration. Teaching Demonstration for the Matlab model. A demo of spreading code generation and modulat ion used in 3G.
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Size: 7515 |
Author: meng |
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Description: This model simulates a CDMA2000 1xRTT Forward link (between Base Station and Mobile Station). In particular, it simulates the Radio Configuration 3 of a Forward Fundamental channel. The block CDMA2k: Initial settings allows you to set different parameters such as data rate, Power Control SubChannel insertion rate, spreading code index, QOSF index and the channel model.
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Size: 105491 |
Author: 张非 |
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Description: Simple spreading code allocation scheme for downlink MC-CDMA
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Size: 240750 |
Author: inonunder@yahoo.com.tw |
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Description: This model simulates a CDMA2000 1xRTT Forward link (between Base Station and Mobile Station). In particular, it simulates the Radio Configuration 3 of a Forward Fundamental channel. The block CDMA2k: Initial settings allows you to set different parameters such as data rate, Power Control SubChannel insertion rate, spreading code index, QOSF index and the channel model.
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Size: 105472 |
Author: 张非 |
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Description: 改变不同的扩频增益以及正弦干扰时的误码率仿真-change the spreading gain sinusoidal interference and the BER simulation
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Size: 2048 |
Author: na |
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Description: 两个Nokia研究人员写的W-CDMA的仿真过程的整个代码。C code
包含信道编码，交织，速率匹配，调制，扩频，信道模型，RACK接收机和相应的解码程序。
本源码对整个系统进行了仿真，非常具有参考价值，对研究WCDMA系统的任何模块都有帮助-two researchers write the W-CDMA simulation of the entire code. C code includes channel coding, interleaving, rate matching, modulation, spreading, Channel model, RACK receiver decoder and the corresponding procedures. The source of the entire system for simulation, the very reference value, Study on the WCDMA system will help any module
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Size: 499712 |
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Description: 3G里使用的Spreading技术演示仿真。用于教学演示的Matlab模型。A demo of spreading code generation and modulation used in 3G.-3G Lane Spreading the use of simulation technology demonstration. Teaching Demonstration for the Matlab model. A demo of spreading code generation and modulat ion used in 3G.
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Size: 7168 |
Author: meng |
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Description: 关于扩频通信的一些基本模块，包括扩频的抗干扰，低检测概率等性能的仿真。-on spread spectrum communications, the basic modules, including the spreading of interference, the low probability of detection properties of the simulation.
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Size: 10240 |
Author: 刘方 |
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Description: 扩频的扩频码产生，扩频实现，调制与解调，最后恢复出原始的信号-Spread spectrum spreading code generation, to achieve spread spectrum, modulation and demodulation, the final restoration of the original signal
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Size: 1024 |
Author: zhanglihua |
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Description: 这是个扩频系统中的PN码仿真程序，提供了详尽的扩频码生成过程，相信对大家有所帮助-This is a spread-spectrum systems PN code simulation program, provided a detailed spreading code generation process, believe that U.S. help
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Size: 26624 |
Author: 刘元涛 |
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Description: 该程序可以实现直扩通信系统中扩频码的生成，可以通过键入本原多项式直接输出生成的扩频码，方便灵活。-The program can be achieved in DS spread spectrum communication system to generate code, you can direct the output type primitive polynomial generated spreading codes, convenient and flexible.
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Size: 12288 |
Author: qingyuanbao |
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Description: 一个四用户的扩频通信系统，扩频增益为N=16，采用Walsh码进行直接序列扩频，BPSK调制，无线信道为AWGN(加性高斯白噪声信道)信道(AWGN信道：不考虑通信信道信号时，由宽频范围描述的统计随机无线噪声。)。在接收端进行解扩，解调，判决，通过仿真得到其中一个用户的误比特率与信噪比的仿真结果。-A four-user spread spectrum communication system, spreading gain for N = 16, using Walsh code Direct Sequence Spread Spectrum, BPSK modulation, channel for AWGN (additive white Gaussian noise channel) channel (AWGN channel: do not consider communication channel signals, described by the scope of broadband wireless random statistical noise.). At the receiving end for despreading, demodulation, judgments, through the simulation to be one of a user' s bit error rate and SNR of the simulation results.
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Size: 9216 |
Author: jehuty |
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Description: 一个四用户的扩频通信系统，扩频增益为N=16，采用Walsh码进行直接序列扩频，BPSK调制，无线信道为AWGN信道。在接收端进行解扩，解调，判决，通过仿真得到其中一个用户的误比特率与信噪比的仿真结果。-A four-user spread spectrum communication system, spreading gain for N = 16, using Walsh code Direct Sequence Spread Spectrum, BPSK modulation, AWGN channel for the wireless channel. At the receiving end for despreading, demodulation, judgments, through the simulation to be one of a user' s bit error rate and SNR of the simulation results.
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Size: 1024 |
Author: 林立夫 |
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Description: 设计一个四用户的扩频通信系统，扩频增益为N=16，采用Walsh码进行直接序列扩频，BPSK调制，无线信道为AWGN信道。在接收端进行解扩，解调，判决，通过仿真得到其中一个用户的误比特率与信噪比的仿真结果。-Designed a four-user spread spectrum communication system, spreading gain for N = 16, using Walsh code Direct Sequence Spread Spectrum, BPSK modulation, AWGN channel for the wireless channel. At the receiving end for despreading, demodulation, judgments, through the simulation to be one of a user' s bit error rate and SNR of the simulation results.
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Size: 5120 |
Author: 杨世斌 |
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Description: This function generates OVSF code (Orthogonal Variable SPreading Factor)
Usage:
x = ovsf(y,z)
x, the output cell array having required OVSF codes
y, number of codes required
z, array having length of each code to the base 2 i.e. 2.^2 = 4
example y = 3 z = [4 2 3]
this will give a cell array with [1x4] [1x8] [1x16]
length = 2.^n , enter n in length of array
The code is not optimized yet, user is free to optimize
do not forget to leave a comment
This is version 1 of the file, and it need optimization. More details of OVSF code can be found on wirelesscafe.wordpress.com-This function generates OVSF code (Orthogonal Variable SPreading Factor)
Usage:
x = ovsf(y,z)
x, the output cell array having required OVSF codes
y, number of codes required
z, array having length of each code to the base 2 i.e. 2.^2 = 4
example y = 3 z = [4 2 3]
this will give a cell array with [1x4] [1x8] [1x16]
length = 2.^n , enter n in length of array
The code is not optimized yet, user is free to optimize
do not forget to leave a comment
This is version 1 of the file, and it need optimization. More details of OVSF code can be found on wirelesscafe.wordpress.com
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Size: 2048 |
Author: Rafal |
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Description: OVSF code generator:
The function ovsf_code_generator takes a vector of spreading factors which OVSF codes are required followed by an integer specifying the number of elements in that vector. The function returns a vector of vectors of double, where each vector of doubles consists of the bipolar elements of the OVSF code corresponding to the spreading factor in the same position in the input vector. Thus, the output vector will have the same length as the number of spreading factors and the length of each of the the sub-vectors will be equal to the spreading factor value in the
corresponding position.-OVSF code generator:
The function ovsf_code_generator takes a vector of spreading factors which OVSF codes are required followed by an integer specifying the number of elements in that vector. The function returns a vector of vectors of double, where each vector of doubles consists of the bipolar elements of the OVSF code corresponding to the spreading factor in the same position in the input vector. Thus, the output vector will have the same length as the number of spreading factors and the length of each of the the sub-vectors will be equal to the spreading factor value in the
corresponding position.
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Size: 2048 |
Author: agur |
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Description: (1) 产生数值为±1的用户随机数据；给出Matlab下对应的模块；
(2) 产生并给出64×64的Walsh矩阵，作为用户接入的扩频码；
(3) 利用上述一个用户的扩频码和用户数据演示扩频过程；给出Simulink工作框图；
(4) 利用FFT，计算并画出基带数据和扩频信号的频谱（在一个图中给出）；
-(1) value of ± 1 generated random data users given under the corresponding Matlab module (2) generation and gives the Walsh 64 × 64 matrix, as the user access to the spreading code (3) the use of the a user' s spreading code and spread spectrum user data presentation process given work Simulink block diagram (4) the use of FFT, calculate and draw the base-band spectrum data and the spread spectrum signal (given in a diagram)
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Size: 9216 |
Author: 芊屹 |
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Description: 本文应用simulink建立了常用扩频码序列m序列和Gold序列仿真模型，模拟仿真数据与原理分析高度吻合，证明应用simulink进行常用扩频码序列仿真实验的可行性。-In this paper, simulink establish a common spreading code sequence of m sequences and Gold sequences simulation model, simulation data highly consistent with the principles of analysis, proved to be common spreading code sequences simulink simulation is feasible.
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Size: 297984 |
Author: 小霞 |
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Description: 扩频伪码捕获方法，截获搜索策略及截获判定。-Spreading pseudo-code acquisition method, the to intercept search strategy and intercepted judgment.
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Size: 541696 |
Author: ygy |
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Description: generate spreading code long code
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Size: 93184 |
Author: vivs
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