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Description: 该程序是用MATLAB编写的应用于WCDMA中扩频的OVSF码的产生，简单实用。
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Size: 17627 |
Author: 严诚静 |
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Description:
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Size: 1921065 |
Author: fenyun0707 |
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Description: wcdma下行扰码和OVSF码的matlab仿真程序，已经经过程序验证，绝对可用！-wcdma downlink Scramble and OVSF codes Matlab simulation program has been verified through procedures, absolutely available!
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Size: 1024 |
Author: dayu |
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Description: 该程序是用MATLAB编写的应用于WCDMA中扩频的OVSF码的产生，简单实用。-The program is prepared to use MATLAB applies to WCDMA in the OVSF code spread-spectrum generation, simple and practical.
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Size: 17408 |
Author: 严诚静 |
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Description: 包含了m序列 gold序列 kasami序列和ovsf码的所有伪码产生器-Contains a sequence of m sequences gold Kasami sequences and OVSF code of all pseudo-code generator
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Size: 1024 |
Author: vincnet |
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Description: 本文利用复制方法提出一种新的OVSF码复制生成算法,并在此基础上,研究了非可重排和可重排两种情况下的OVSF码快速分配问题. 利用复制生成的OVSF码字具有明显的异前置性特点,从而可以提高码字分配效率和减小硬件实现复杂度和降低呼叫阻塞率。-In this paper, methods to copy a new copy OVSF code generation algorithm, and on this basis to study the non-rearrangement and rearrangement in both cases the rapid distribution of OVSF code. The use of copy generated OVSF code word with obvious characteristic of different pre-and thus can improve the allocative efficiency of code and reduce the hardware complexity and lower the call blocking rate.
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Size: 266240 |
Author: shilei |
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Description: 本文在介绍了OVSF 码生成算法及属性的基础上，详细讨论了目前国际上较成熟的几种
动态OVSF 码分配算法，并对各算法的产生背景及特性进行了比较分析-This paper introduced the OVSF code generation algorithm and the property on the basis of a detailed discussion of the current international more mature types of dynamic OVSF code allocation algorithm, and the algorithms have the background and characteristics of a comparative analysis
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Size: 166912 |
Author: shilei |
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Description: The combinatorial core of the OVSF code assignment problem
that arises in UMTS is to assign some nodes of a complete binary
tree of height h (the code tree) to n simultaneous connections, such that
no two assigned nodes (codes) are on the same root-to-leaf path. Each
connection requires a code on a specified level. The code can change over
time as long as it is still on the same level. We consider the one-step code
assignment problem: Given an assignment, move the minimum number of
codes to serve a new request. Minn and Siu proposed the so-called DCAalgorithm
to solve the problem optimally. We show that DCA does not
always return an optimal solution, and that the problem is NP-hard.
We give an exact nO(h)-time algorithm, and a polynomial time greedy
algorithm that achieves approximation ratio Θ(h). Finally, we consider
the online code assignment problem for which we derive several results-The combinatorial core of the OVSF code assignment problemthat arises in UMTS is to assign some nodes of a complete binarytree of height h (the code tree) to n simultaneous connections, such thatno two assigned nodes (codes) are on the same root-to- leaf path. Eachconnection requires a code on a specified level. The code can change overtime as long as it is still on the same level. We consider the one-step codeassignment problem: Given an assignment, move the minimum number ofcodes to serve a new request. Minn and Siu proposed the so-called DCAalgorithmto solve the problem optimally. We show that DCA does notalways return an optimal solution, and that the problem is NP-hard.We give an exact nO (h)-time algorithm, and a polynomial time greedyalgorithm that achieves approximation ratio Θ (h). Finally, we considerthe online code assignment problem for which we derive several results
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Size: 157696 |
Author: shilei |
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Description: 随机产生长度大于1000的‘0’、‘1’信号序列，对其进行BPSK，QPSK，16QAM调制，给出：
1）低通滤波器后的波形（只画10个周期）；
2）信号眼图，对其进行讨论（画出5个信号周期）；
3）信号带内、带外功率谱密度（低通滤波器参数自定），并对其进行讨论。
-Generated OVSF code
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Size: 4096 |
Author: rachel |
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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: ovsf is an orthogonal code for multiuser environment
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Size: 1024 |
Author: Vamsidhar Anagani |
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Description: 适应于码分通信系统中的正交扩频码（OVSF）的生成，扩频因子从1到512。-Suitable for code-division communication system orthogonal spreading codes (OVSF) the generation, spreading factor from 1 to 512.
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Size: 1024 |
Author: 朱敏 |
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Description: orthogonal variable spreading factor (OVSF) is an implementation of Code division multiple access (CDMA) where before each signal is transmitted, the spectrum is spread through the use of a user s code. User s codes are carefully chosen to be mutually orthogonal to each other.
These codes are derived from an OVSF code tree, and each user is given a different, unique code. An OVSF code tree is a complete binary tree that reflects the construction of Hadamard matrices.
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Size: 2048 |
Author: deep |
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Description: This file is used for generate OVSF code in Matlab. Check this and enjoy using it
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Size: 1024 |
Author: Radityo |
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Description: enjoy with this script of Ovsf in Matlab
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Size: 6937600 |
Author: darbaoui |
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Description: MATLAB实现Ovsf扩频解调，WCDMA-MATLAB implementation Ovsf Spread
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Size: 1024 |
Author: 王鹏 |
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Description: 根据3GPP25.141协议生成测试模式下的WCDMA系统基站测试数据格式，使用MATLAB产生业务信道。包括pn9序列生成、OVSF码、扰码、调制、扩频以及各码道的功率值加权叠加。-Agreement under 3GPP25.141 generate test mode WCDMA base station test data format, using the MATLAB generate traffic channel. Including pn9 sequence generation, OVSF codes, scrambling, modulation, spreading code channel power and the value of the weighted stack.
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Size: 2048 |
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Description: 基于FPGA的OVSF树的设计，在WCDMA中应用比较多-OVSF tree FPGA-based design, the more WCDMA application
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Size: 1024 |
Author: 洪依 |
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Description: wcdma characteristics
OVSF & Scrambling
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Size: 5120 |
Author: jungmisuk |
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