Description: 干涉仪相位分析程序，可用来提取干涉条纹移动的相位信息-interferometer phase analysis program that can be used to extract the interference fringes mobile phase information Platform: |
Size: 2412 |
Author:亚皮 |
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Description: 交织编码是一种信道改造技术，它通过信号设计将一个原来属于突发差错的有记忆信道改造为基本上是独立差错的随机无记忆信道。交织编码作为克服衰落信道中突发性干扰的有效方法，通常和其它用于纠正无记忆独立差错的信道编码相结合构成级联码，广泛应用于当代移动通信。-intertwined coding is a channel modification techniques, it will be designed to signal through an unexpected error originally belonged to the memory channel transformation is essentially independent of the random errors unmarked Recalling Channel. Coding intertwined as to overcome sudden fading channel interference effective way and the other is usually used to correct errors without memory of the independent channel coding combined constitute cascade code, Contemporary widely used mobile communications. Platform: |
Size: 2909 |
Author:yx |
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Description: This program shows the distributions of the co-channel interference in forward and reverse link in the cellular mobile system with cluster size N, when the mobile subscriber (MS) is at random positions of a cell. -This program shows the distributions of the co-channel interference in forward and reverse link in the cellular mobile system with cluster size N, when the mobile subscriber (MS) is at random positions of a cell. Platform: |
Size: 3072 |
Author:conan |
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Description: 假设在一个ad hoc网络中，移动节点的发射功率PTx总是恒定的。要发送数据的移动节点总是先监听信道，测量接收到的信号功率X，其中X= I + N, I为接收到的干扰，N是噪声。移动节点只有在X＜INThre时，才可以发射。式中，INThre为背景噪声门限。
在仿真中，我们规定每个移动节点的发射功率是常数，PTx = 1W；接收节点接收机的灵敏度Smin = -80 dBm；信号质量 min = 2 dB；系统的背景噪声门限INThre = 1.2e-10。
-Assuming in an ad hoc network, mobile node s transmission power is always constant PTX. To send data to the mobile node always monitor channel, measuring the received signal power X, which X = I+ N, I was received interference, N is the noise. Mobile node only when X <INThre when it is fired. Where, INThre threshold for background noise. In the simulation, we require that each mobile node s transmission power is constant, PTx = 1W receiver node receiver sensitivity Smin =-80 dBm signal quality Platform: |
Size: 7168 |
Author:飞 |
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Description: 根据有无固定基础设施，无线局域网又可分为BSS (Basic Service Set)和IBSS (Independent Basic Service Set)。我们要研究的ad hoc网络属于后者。假设在一个ad hoc网络中，移动节点的发射功率PTx总是恒定的。要发送数据的移动节点总是先监听信道，测量接收到的信号功率X，其中X= I + N, I为接收到的干扰，N是噪声。移动节点只有在X＜INThre时，才可以发射。式中，INThre为背景噪声门限。
在仿真中，我们规定每个移动节点的发射功率是常数，PTx = 1W；接收节点接收机的灵敏度Smin = -80 dBm；信号质量 min = 2 dB；系统的背景噪声门限INThre = 1.2e-10。
-According to the availability of fixed infrastructure, wireless local area network can be divided into BSS (Basic Service Set) and IBSS (Independent Basic Service Set). We have to study the ad hoc network belong to the latter. Assuming in an ad hoc network, mobile node s transmission power is always constant PTX. To send data to the mobile node always monitor channel, measuring the received signal power X, which X = I+ N, I was received interference, N is the noise. Mobile node only when X <INThre when it is fired. Where, INThre threshold for background noise. In the simulation, we require that each mobile node s transmission power is constant, PTx = 1W receiver node receiver sensitivity Smin =-80 dBm signal quality Platform: |
Size: 7168 |
Author:何炳钦 |
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Description: 本书较为详细的介绍了移动通信的基本知识，内容包括移动通信中的调制解调，信道传播特性，抗衰落技术，噪声干扰，组网技术，cdma,tdma,fdma等多址技术。-The book describes in some detail the basic knowledge of mobile communications, including mobile communications in the modulation and demodulation, channel propagation characteristics, anti-fading technology, noise interference, network technology, cdma, tdma, fdma such as multiple access technology. Platform: |
Size: 15280128 |
Author:朱丽平 |
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Description: 这是个智能天线系统，被设计成主波束面向用户，背对干扰用户-This is a smart antenna system, the main beam is designed for users to turn their backs on the user interference Platform: |
Size: 7168 |
Author:姚丽娜 |
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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: This set of scripts allows the shadowing of a building to be simulated. It allows the
interference between two systems operating at the same frequency to be studied.
This simulation can do two main types of simulations:
1. Animated simulation where we have a fixed system, with one or more transmitters,
and a single mobile interfering user. The shadowing for the mobile user and the
interference it generates can be studied. The animations store each frame as a
JPG file, which can be imported in to a video editing package to be converted to
a movie.
2. Interference between two systems at the same frequency, each with multiple
transmitters Platform: |
Size: 39936 |
Author:pooja |
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Description: 近年来随着移动互联网业务和物联网业务的兴起与
发展，用户对移动宽带业务需求越来越旺盛，对移动通信
网络的接入速率和质量要求也越来越高，原有基于码分多
址（CDMA）的3G及其增强技术未来将无法满足业务发展
需要，因此3GPP及3GPP2组织自2004年开始启动长期
演进（LTE）/空口演进（AIE，后改名为超移动宽带UMB）项
目，旨在通过引入一些关键技术，如正交频分复用（OFDM）
调制技术、多入多出（MIMO）技术、混合自动重传请求
（HARQ）、全IP扁平化架构及动态带宽分配等实现网络变
革，达到以下所述的网络性能，为移动宽带多媒体业务持
续发展提供技术保障。-Abstract:To meet the needs of mobile broadband
services,LTE is being deployed and becoming ma－
tured,which includes key technologies such as
OFDM,high-order modulation,HARQ,enhanced
multi-antenna technologies,fast synchronization
technologies,scalable control channel design,adap－
tive resource allocation,interference suppression
technologies etc.Moreover,the discussion on LTE-
Advanced has started,where technologies being
considered includes aggregate multi-carrier,high－
er-order MIMO,smart relay,heterogeneous net－
work,multipoint collaboration as well as enhanced
interference management. Platform: |
Size: 78848 |
Author:涛 |
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Description: Abstract—2×2 unitary precoding based on receiver feedback
is applied alongside spatial multiplexing at the base station in
HSDPA (D-TxAA) when the mobile terminal supports MIMO
transmissios [1]. This precoding will influence achievable sumrate
of the MIMO channel if it influences the Signal-to-
Interference-plus-Noise Ratio (SINR) of streams at the receiver
(RX) output. We propose a set of MIMO HSDPA receivers, all
based upon a LMMSE chip-level matrix filter (equalizer) front
end, and introduce the notion of joint bias for the MIMO chip
equalizer. Statistical properties of the spatial model thus obtained
are exploited to analyze the performance of proposed MIMO
receivers. It is shown that precoding choice depends upon the
MIMO receiver and the extent of its impact depends on the
MIMO RX. Platform: |
Size: 195584 |
Author:ashish |
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Description: 码分多址(CDMA)技术作为第三代移动通信系统的核心技术，具有容量大、抗干扰能力强等优点。然而,传统的CDMA系统属于窄带扩频系统,它的数据速率比较低,不能胜任新一代移动通信系统
（beyond 3G）高速数据通信的需要。而多载波传输技术－正交频分复用（OFDM），作为后三代移动通信的核心技术，则具有高数据速率传输的特点。-Code Division Multiple Access (CDMA) technology as the third generation mobile communication system' s core technology, high capacity, anti-interference ability and so on. However, the traditional narrow-band CDMA system is spread spectrum system, and its relatively low data rate, can not do next-generation mobile communication systems (beyond 3G) high speed data communication needs. The multi-carrier transmission technology- orthogonal frequency division multiplexing (OFDM), after three generations of mobile communications as a core technology, the high data rate transmission characteristics. Platform: |
Size: 774144 |
Author:w |
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Description: For a listing of recent titles in the Artech House Mobile Communications Series,
turn to the back of this book. Platform: |
Size: 5683200 |
Author:Marwa Mohamed Saad |
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Description: Revised and enlarged version that discusses how to design a mobile communications system. Comprehensively examines the mobile radio environment. Covers prediction of propagation loss, calculation and methods of reducing fades, interference, frequency plans and associated schemes, design parameters, signaling and channel access, cellular CDMA, microcell systems, and miscellaneous related systems. Contains chapter-by-chapter references and problems. Common terms and phrases:bit-error rate CDMA cell site co-channel interference coherence bandwidth diversity scheme FDMA microcell mobile unit path loss Rayleigh fading Platform: |
Size: 4662272 |
Author:shahram |
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Description: In this work we have been able to show the advantages of
associating transmission modes with the inter-cell interference
coordination apparatus. It should be noted that in cases where
both downlink and uplink are congested,
Platform: |
Size: 917504 |
Author:babu |
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Description: 你所在的移动通讯公司计划用微波发射器传送通话信号，为了以最优信号建立一个蜂窝通信网络需要考虑诸多因素：如地形，通信模式，无线电噪音源等。由于计划服务的3个地区主要为平原，基本没有干扰源，所以考虑的重点是通信模式。投资方为你提供的资源可以建造10个发射器用于通信，每个发射器可以同时处理200个呼叫信号并能可靠地覆盖一平方英里的范围。你还有关于3个地区每5*5英里的市场统计数据可以利用，这些数据预示了3个重要时段的通信需求：
工作日的上午8：30，此时进入Flat Spot市的人流达到高峰。
工作日的上午11：00，此时业务通话达到高峰。
星期六的中午，郊区通信达到高峰。
由于只有10个发射器无法覆盖整个地区，所以你需要编写程序对呼叫需求数据进行分析，以便发射器的配置能够为最大数量的潜在客户提供服务。-The mobile communications company where you plan to use a microwave transmitter to send a CALL signal, the signal in order to establish an optimal cellular communication networks need to consider many factors: such as topography, communication mode, radio noise sources. Since planning services three areas are mainly plain, basic no interference source, so consider focused mode of communication. Investors to provide you with the resources to build 10 transmitters for communication, each transmitter can handle 200 call signal can be reliably cover a square mile range. You have about three regions 5* 5 miles per market statistics are available, these data indicate the three major periods of communication needs:
Weekdays 8:30 am, this time into Flat Spot City traffic peak.
11:00 am weekdays, when business calls peaked.
Saturday at noon, suburban traffic peak.
Since only 10 transmitters can not cover the whole area, so you need to write a program to analyze t Platform: |
Size: 4096 |
Author:水上飘 |
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Description: 移动通信系统中的干扰问题及解决方案，例如rls算法，MIMO多用户检测技术等参考资料!-
Interference problems and solutions in mobile communication systems, such as rls algorithm, MIMO multi-user detection techniques reference! Platform: |
Size: 1238016 |
Author:李稍微 |
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Description: 大唐移动关于解决蜂窝移动通信中的同频干扰的解决方案-Solution of the same frequency interference in cellular mobile communication Platform: |
Size: 647168 |
Author:王莫尘 |
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Search - interference mobile