Description: 基于OFDM的无线宽带系统仿真It contains mainly two parts, i.e. link-level simulator and system-level simulator.
Link-level simulator focus on a single-cell single-user scenario, where signal is transmitted from tx, and estimated at rx. Comparing the difference in tx/rx signal, the error rate can be found out. The output of the link-level simulator is the BLER/BER vs. SNR mapping table, that can be used for the system-level simulation.
System-level simulator focus on a multi-cell multi-user scenario. For the sake of simplicity, it takes the mapping table aquired in the link-level simulation, measure the actural SNR, and finds the corresponding error rate.-OFDM-based wireless broadband system simulation It contains mainly two parts, ie link-level simulator and system-level simulator.Link-level simulator focus on a single-cell single-user scenario, where signal is transmitted from tx, and estimated at rx . Comparing the difference in tx/rx signal, the error rate can be found out. The output of the link-level simulator is the BLER/BER vs. SNR mapping table, that can be used for the system-level simulation.System- level simulator focus on a multi-cell multi-user scenario. For the sake of simplicity, it takes the mapping table aquired in the link-level simulation, measure the actural SNR, and finds the corresponding error rate. Platform: |
Size: 256000 |
Author:zhangli |
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Description: 把地理区域分成一个个小区，蜂窝系统在该区域内提供无线覆盖。把可用的频谱分成很多信道，每个小区分配一组信道。使用频分双工（FDD）。在小区间进行频率利用，N个小区构成一个簇，簇间进行频率复用。定义了传播特性（信道参数）以及同频小区的位置。信道的参数包括：小区半径，路径损耗指数，以分贝为单位的对数正态阴影的标准差，基站发射功率级，移动台发射功率级，每个小区的扇区数，扇区化天线的正反向比，要仿真的瞬时位置的组数，同频干扰阈值。-To a geographical area is divided into small areas, cellular systems in the region to provide wireless coverage. The available spectrum is divided into multi-channel, each plot the distribution of a group of channels. The use of frequency division duplex (FDD). In the district between the frequency of use, N plots constitute a cluster, cluster between frequency reuse. The definition of the propagation characteristics (channel parameters), as well as with the frequency of residential location. Channel parameters include: cell radius, path loss index to decibels for units Lognormal shadow of the standard deviation, the base station transmitter power level, mobile station transmitting power level, the number of sectors in each district, sector of the antenna the pros and cons to the ratio, to the transient simulation of the group a few positions, the same frequency interference threshold. Platform: |
Size: 2048 |
Author:mame |
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Description: 对传统的多小区系统中的干扰控制技术进行了简单的回顾,对多用户和多用户MIMO系统中的干扰抑制技术进行分析，这些是后续对多小区MIMO研究的基础。重点对多小区MIMO系统展开深入研究，揭示了系统干扰受限的原因，将单用户和多用户的千扰抑制技术扩展到多小区系统，分别给出了基于接收端和发送端的多种抑制干扰的系统结构和算法，推导了其容量并进行了性能分析。同时也结合实际系统的设计对各种干扰抑制技术进行比较和评价，得到了许多对于系统设计具有参考价值的结论。-he traditional system of multi-cell interference control technology a simple review of multi-user and multi-user MIMO system analysis of the interference suppression techniques, which are the follow-up of multi-cell MIMO research. Emphasis on the multi-cell MIMO system launched an in-depth study revealed the system interference limited reasons, single-user and multi-user interference suppression techniques extended to multi-cell systems, respectively, gives the receiver and sender based on a variety of interference suppression The system architecture and algorithms derived its capacity and conducted performance analysis. But also with the actual system design on a variety of interference suppression techniques to compare and evaluate system design by many for a reference value is reached. Platform: |
Size: 4056064 |
Author:方周 |
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Description: 摘 要:提出一种新的基于Pareto多目标进化免疫算法(PMEIA)。算法在每一代进化群体中选取最优非支配抗体保存到记忆细胞文档中 同时引入Parzen窗估计法计算记忆细胞的熵值,根据熵值对记忆细胞文档进行动更新,使算法向着理想Pareto最优边界搜索。此外,算法基于点在目标空间分况进行克隆选择,有利于得到分布较广的Pareto最优边界,且加快了收敛速度。与已有算法相比, PMEIA在收敛性、多样性,以及解的分布性方面都得到很好的提高。-Abstract:This paperproposed a new pareto-based multi-object evolutionary mi mune algorithm(PMEIA). PMEIA selected
optmi alnon-dominated antibodieswhichwere then reserved inmemory cellarchive, and introducedParzenwindow to calculate
entropy ofmemory cells. Updated thememory cell archive according to entropy ofmemory cells. This guarantees the conver-
gence to the true Pareto fron.t Moreover, the performance of clone selection was dependent on distribution in the objective
space, whichwas favorable forgetting awidely spreadPareto frontand mi proving convergence speed. Comparedwith the exis-
ted algorithms, the obtained solutions ofPMEIA havemuch betterperformance in the convergence, diversity and distribution. Platform: |
Size: 276480 |
Author:王飞 |
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Description: TD-SCDMA系统联合检测中的信道估计、信道估计后处理、信道估计串行干扰消除后处理算法的源代码。其中，信道估计采用频域快速FFT法以减少运算量；后处理采用激活窗检测法，只保留激活用户的多径信息，其余置0，以达到降低干扰及噪声的目的；串行干扰消除可以消除多小区信道估计的干扰，以得到本小区的纯净信道估计结果。-TD-SCDMA system, joint detection of channel estimation, channel estimation and post-processing, channel estimation and post-processing the serial interference cancellation algorithm source code. Among them, frequency-domain channel estimation using fast FFT method to reduce computational complexity post-processing detection method used to activate windows, leaving only the active user' s multi-path information, the remaining set 0, in order to achieve the purpose of reducing interference and noise serial interference cancellation can be Multi-cell channel estimation to eliminate the interference in order to get the purity of the cell channel estimation result. Platform: |
Size: 5120 |
Author:梦 |
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Description: 不同蜂窝系统，不同移动台速率的情况下
信道保持时间，驻留时间，切换概率仿真计算-The simulation for multi size cell and multi speed MS s Channel hold time and stay time and the probability of handover Platform: |
Size: 2048 |
Author:huang |
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Description: LTE中的多小区初级系统级虚拟MIMO上行仿真，使用SCM信道模型-LTE in the initial system-level multi-cell uplink virtual MIMO simulation, using the SCM channel model Platform: |
Size: 209920 |
Author:WR |
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Description: 含19个小区的多小区系统大尺度衰落建模。-With 19 multi-cell cellular system by the decline of large-scale modeling. Platform: |
Size: 2048 |
Author:Pao Pao |
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Description: 对于细胞图像序列中多目标的追踪是细胞运动研究中的难点，针对高密度细胞图像中细胞运动的复杂性，本文提出一个细胞分割和追踪的系统。在细胞分割部分，针对实验所用细胞图像序列的特点，本文分别采用了不同的分割方法。在基本的细胞分割后，由于得到的分割图像存在着一些粘连细胞，为了将之分离，采用了基于Freeman code法对细胞轮廓进行跟踪编码。根据编码所得的链码特征分析细胞的轮廓形态，找出粘连细胞图像中的凹角点，再将凹角点进行分组配对完成粘连细胞的分离。在追踪部分，针对细胞的运动特性，将细胞分为惰性细胞和非惰性细胞，分别采用区域重叠法和拓扑约束法进行追踪。针对高密度细胞追踪中由于细胞密集加上细胞分裂很容易导致错误追踪的问题，本文提出将面积项引入实现追踪的拓扑约束条件中，对原方法进行改进，有效的解决了这一问题，有助于提高追踪效率，特别是对于细胞密度比较大，且分裂频繁的细胞图像效果明显。另外，本文提出根据细胞数量设置产生图的距离门限，使算法的适用性更强 。-For cells in image sequences multi-objective tracking is cells, the difficulty in the studies of cellular density cell image motion complexity, this paper puts forward a cell division and tracking system. In the cell division, according to the characteristics of image sequence cells, this paper adopts a different method. In the basic cell division, because the segmentation image exists some adhesion to the separation of cells, using the method of Freeman code based on contour tracking code. According to the characteristics of the chain code coding analysis, find the outline of cells in the cell adhesion, concave edges concave angular point pairs finished adhesion cell group. In part, according to the characteristic and cells
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Size: 3523584 |
Author:刘颖 |
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Description: 针对OFDM系统，分成链路级仿真和系统级仿真两个部分。为了降低系统级仿真的复杂度，采用链路级仿真的部分结果。-It contains mainly two parts, i.e. link-level simulator and system-level simulator.
Link-level simulator focus on a single-cell single-user scenario, where signal is transmitted from tx, and estimated at rx. Comparing the difference in tx/rx signal, the error rate can be found out. The output of the link-level simulator is the BLER/BER vs. SNR mapping table, that can be used for the system-level simulation.
System-level simulator focus on a multi-cell multi-user scenario. For the sake of simplicity, it takes the mapping table aquired in the link-level simulation, measure the actural SNR, and finds the corresponding error rate.
Link-level simulator support SISO, 1 by x MRC, 2 by 1 STBC/SFBC, 2 by 2 Alamouti, x by 1 Antenna selection, x by y antenna selection.
System-level simulator, currently support only SISO and 1 by 2 MRC.
To start with, go into the folder sys_link_simu, and excute the following commond from matlab:
sys_link_simu_func(a,b)
where a is the link ada Platform: |
Size: 286720 |
Author:王刚名 |
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Description: 导言 - 描述MATLAB系统的组成。
开发环境- 介绍MATLAB的开发环境，包括有关工具和MATLAB桌面的信息。
矩阵操作- 介绍如何用MATLAB生成矩阵以及用矩阵进行数学运算。
作图- 介绍MATLAB的作图能力，包括有关作图数据，给图表加注释，以及图像的使用。
用MATLAB编程 - 描述如何用MATLAB语言编写手稿和函数,以及利用数据结构，例如单元数组和多元数组。
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用MATLAB编程- 描述如何用MATLAB语言编写手稿和函数,以及利用数据结构，例如单元数组和多元数组。
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Yòng MATLAB biānchéng- miáoshù rúhé yòng MATLAB yǔyán biānxiě shǒugǎo hé hánshù, yǐjí lìyòng shùjù jiégòu, lìrú dānyuán shùzǔ hé duōyuán shùzǔ.EnglishSpanishArabicAlpha
- Describes the preparation of manuscripts and how to use MATLAB function, and the use of data structures, such as cell array and multi-array using MATLAB programming. Platform: |
Size: 1028096 |
Author:xushaowen |
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Description: 本书包含MATLAB使用和数学知识的丰富层次。编著本书有四个主要目的：（1） 帮助初学者顺利跨入MATLAB大门；（2） 全面、多层次、细致而深入地叙述MATLAB中数值、字符串、胞元、构架、逻辑、函数句柄六种重要数据类型的应用规则、相互配用和编程规范；（3） 由浅入深地阐述MATLAB三种建模、分析、仿真环境——数值计算、符号计算和Simulink环境的特征和使用要领；（4） 以实例讲述MATLAB代表的现代计算能力对传统算法和思维的影响。-Book contains rich levels of using MATLAB and mathematics knowledge. Compiled the book has four main purposes: (1) help beginners MATLAB entered the door smoothly (2) comprehensive, multi-level, meticulous and thorough account Numbers, strings, cell yuan, in the MATLAB framework, logic and function handles six important application rules, with each other and programming of the data type specifications (3) describes the MATLAB distinguished three kinds of modeling, analysis, simulation environment, numerical and symbolic computation and Simulink environment characteristics and use of the essentials (4) with examples about MATLAB on behalf of the modern computing power s influence on the traditional algorithm and thinking.
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Size: 10518528 |
Author:常勇 |
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Description: MIMO-OFDM wireless communications with matlab 例程。包含propagation and fading、SISO channel models、MIMO Channel models、intorduction to ofdm、 synchronization for ofdm、channel estimation、Papr reduction、inter-cell interference mitigation techniques MIMO channel capacity,attenna diversty and space-time coding techniques, signal detection for spatially multiplexed mimo systems, exploitingchannel state information at the transmitter side, multi-user MIMO-MIMO-OFDM wireless communications with matlab routines. Includes propagation and fading, SISO channel models, MIMO Channel models, intorduction to ofdm, synchronization for ofdm, channel estimation, Papr reduction, inter-cell interference mitigation techniques MIMO channel capacity, attenna diversty and space-time coding techniques, signal detection for spatially multiplexed mimo systems, exploitingchannel state information at the transmitter side, multi-user MIMO Platform: |
Size: 801792 |
Author:吴世锋 |
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Description: 该算法利用演化博弈的思想进行多小区用户的资源分配，将小区重叠部分当做种群，种群中的用户进行演化博弈进行网络切换，基站为其分配子信道。本算法利用matlab进行仿真测试，仿真结果显示演化博弈能够达到稳定，提升系统吞吐量，在小区资源分配能够有一个很好的参考。不同于传统的资源分配方法，可以给出一个新思路(The algorithm uses the idea of evolutionary game to allocate resources for multi-cell users. The overlapping part of the cell is regarded as a population. The users in the population are handed over by evolutionary game, and the base station allocates subchannels to them. The algorithm is tested by matlab. The simulation results show that the evolutionary game can achieve stability, improve system throughput, and have a good reference for resource allocation in the cell. Different from the traditional method of resource allocation, a new idea can be given.) Platform: |
Size: 5120 |
Author:舌战群儒 |
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Search - multi cell matlab