Description: 4G通信关键技术演进
随着世界范围内第三代移动通信系统逐步实施，移动通信未来的发展及演进问题成了研究热点。本文介绍了第四代移动通信及其性能和系统网络结构及OFDM、软件无线电、智能天线、IPv6等关键技术，并分析了4G移动通信系统与3G移动通信的关系，并对通信系统演进做了展望。 -Communication the key to the evolution of 4G technology around the world with the third-generation mobile communication system being implemented gradually and the future development of mobile communications and the evolution of research has become an issue of hot spots. This paper introduces the fourth generation mobile communication system network and its performance and structure and OFDM, software radio, smart antenna, IPv6 and other key technologies, and analyzes the 4G mobile communication system and the relationship between the 3G mobile communications and the evolution of communication systems to do the Prospect. Platform: |
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Author:exiaohu |
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Description: 智能天线性能研究，使智能天线性能更好，性能更稳定-Performance of smart antenna is a smart antenna with better performance Platform: |
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Author:张会龙 |
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Description: a brief introduction to the concept and application of smart antennas for
Code Division Multiple Access (CDMA) systems is presented. Following some introductory
remarks in Section 1.1, the basic definition and classification of smart antennas is presented
in Section 1.2. Key system aspects influencing the performance of smart antennas
are also addressed in this section. The aims of this thesis are then identified in Section 1.3.
In light of the thesis aims, a literature survey is presented in Section 1.4 which forms the
basis of the work presented in this thesis and covers the topics of (i) interference rejection
capabilities of array antennas, (ii) channel modelling for smart antennas, (iii) performance
analysis of smart antennas for CDMA systems, (iv) adaptive beamforming algorithms for
smart antennas and (v) hybrid smart antenna applications. The main thesis contributions
are presented in Section 1.5. Finally, the thesis organisation is described in Section 1.6. Platform: |
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Author:mansoor |
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Description: Electronic book: Enhancing the Performance of Ad Hoc Wireless Networks with Smart Antennas, suitable for smart antenna algorithm developer Platform: |
Size: 4656128 |
Author:minuscat |
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Description: YW-605系列射频卡读卡器是采用13.56M非接触射频技术设计而成的通用型读卡器，内嵌MF RC530、RC531和CL RC632等一些列原装芯片，读写性能稳定可靠。天线和主板一体化设计，使芯片的读写性能更出色的发挥出来。该系列读卡器采用USB/ RS232 等数据传输方式与计算机相连接，使计算机二次开发变得更为简单。
该系列读卡器支持ISO14443-A Mifare One S50, S70，ISO14443B和ISO15693及其兼容卡片。广泛应用于非接触智能水、电、气三表、交通一卡通读写器，桌面发卡器，门禁考勤读写卡器，汽车电子感应锁配套，办公/商场/洗浴中心储物箱的安全控制，各种防伪系统及生产过程控制，数据采集等。
值得参考-YW-605 series RF card reader is the use of non-contact radio frequency technology 13.56M design from the universal card reader, built-MF RC530, RC531 and CL RC632 chip and some original column, read and write performance is stable and reliable. Integration of the antenna and motherboard design, enabling the chip to read and write performance even better play. This series of readers use USB/RS232 and other data transmission and computer connected to the secondary development of the computer easier.
This series of Reader supports ISO14443-A Mifare One S50, S70, ISO14443B and ISO15693 and compatible cards. Widely used contactless smart water, electricity, gas and three tables, the transportation card reader, desktop card dispenser, card reader access control attendance, automotive electronic sensors lock facilities, office/store/storage bath safety control box various security systems and production Platform: |
Size: 336896 |
Author:coodor |
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Description: 智能天线自适应算法的研究，比较了LMS、RLS和MVDR三种算法的性能。-Smart antenna adaptive algorithm study to compare the performance of the LMS, RLS and MVDR three algorithms. Platform: |
Size: 1024 |
Author:汤茗凯 |
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Description: 智能天线与空时编码技术的性能分析.对智能天线的研究有很大的帮助，而空时编码技术也是很好的资料-Smart antenna and the technology of the space-time codes performance analysis. For smart antenna research are of great help, while the space-time coding technology also is very good material
Platform: |
Size: 163840 |
Author:zhouxiaolin |
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Description: 这是一个智能天线中的LMS算法程序，能够生成5个图像，可对算法性能进行分析。-This is a smart antenna of the LMS algorithm, can generate 5 images, to analyze the performance of the algorithm. Platform: |
Size: 1024 |
Author:楠 |
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Description: A reconfigurable antenna is an tenna capable of modifying dynamically its frequency and radiation properties in a controlled and reversible manner.[2] In order to provide a dynamical response, reconfigurable antennas integrate an inner mechanism (such as RF switches, varactors, mechanical actuators or tunable materials) that enable the intentional redistribution of the RF currents over the antenna surface and produce reversible modifications over its properties. Reconfigurable antennas differ smart antennas because the reconfiguration mechanism lies inside the antenna rather than in an external beamforming network. The reconfiguration capability of reconfigurable antennas is used to maximize the antenna performance in a changing scenario or to satisfy changing operating requirements.-A reconfigurable antenna is an antenna capable of modifying dynamically its frequency and radiation properties in a controlled and reversible manner.[2] In order to provide a dynamical response, reconfigurable antennas integrate an inner mechanism (such as RF switches, varactors, mechanical actuators or tunable materials) that enable the intentional redistribution of the RF currents over the antenna surface and produce reversible modifications over its properties. Reconfigurable antennas differ smart antennas because the reconfiguration mechanism lies inside the antenna rather than in an external beamforming network. The reconfiguration capability of reconfigurable antennas is used to maximize the antenna performance in a changing scenario or to satisfy changing operating requirements. Platform: |
Size: 243712 |
Author:Nicholas Hu |
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Description: The performance of smart antenna greatly depends on the effectiveness of DOA estimation algorithm Platform: |
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Author:walid |
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Description: The demand in communication capacity is achieved by the employment of the space division multiple access technique. The signal transmitted on the same frequencies can be separated by the smart antenna array and they are separated in spatial domain. Which increase the performance and improved network efficiency of the mobile system.
The features of a wireless channels are thin. Hence for some region the characteristics are zero. Since in spatial domain it varies with DOA. For reducing the bandwidth requirement sparsely spaced element is needed for -The demand in communication capacity is achieved by the employment of the space division multiple access technique. The signal transmitted on the same frequencies can be separated by the smart antenna array and they are separated in spatial domain. Which increase the performance and improved network efficiency of the mobile system.
The features of a wireless channels are thin. Hence for some region the characteristics are zero. Since in spatial domain it varies with DOA. For reducing the bandwidth requirement sparsely spaced element is needed for Platform: |
Size: 13312 |
Author:emman |
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Description: 介绍信号处理在通信系统中的应用发展趋势，其中包括智能天线介绍与Turbo迭代均衡处理算法介绍。在最后给出了基于Matlab仿真的Turbo均衡算法的性能曲线。-Describes trends in signal processing applications in a communication system, including the introduction of smart antenna processing algorithms introduced Turbo iterative equalization. Finally, the performance curves in Matlab-based simulation of Turbo equalization algorithm. Platform: |
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Author:凡凡凡 |
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Description: 智能天线的cma算法的matlab仿真,性能相当好!,不错的源码-Cma algorithm of smart antenna in the matlab simulation, the performance is quite good! Platform: |
Size: 3072 |
Author:taidlfaj |
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Description: 智能天线的cma算法的matlab仿真,性能相当好!,不错的源码-Cma algorithm of smart antenna in the matlab simulation, the performance is quite good! Platform: |
Size: 3072 |
Author:Algoq |
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Description: 随着移动通信技术的飞速发展，智能天线技术研究的不断深入，来波方向
(DOA)
估计技术逐渐成为研究的热点之一，
而
MUSIC
算法是智能天线技术的典型
算法。本文在对
MUSIC
算法进行分析的基础上，设计了
MUSIC
算法的仿真程序，
对不同情况下该算法的性能进行了仿真分析。
仿真结果表明该算法在不同阵列结
构、信号入射角度时具有不同的性能。(With the rapid development of mobile communication technology, the research of smart antenna technology is deepening, direction of arrival (DOA) estimation technique becomes a research hotspot, and the music algorithm is a typical algorithm of smart antenna technology. Based on analyzing the music algorithm on the design of the music algorithm simulation program, the performance of the the algorithm under different conditions are simulated and analyzed. Simulation results show that the algorithm in different array structures with different properties) Platform: |
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Author:Luss
|
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Description: 智能天线的cma算法的matlab仿真,性能相当好!,不错的源码(Cma algorithm of smart antenna in the matlab simulation, the performance is quite good!) Platform: |
Size: 2048 |
Author:cwzi%40445
|
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Description: 智能天线的cma算法的matlab仿真,性能相当好!,不错的源码(Cma algorithm of smart antenna in the matlab simulation, the performance is quite good!) Platform: |
Size: 3072 |
Author:lojal |
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Search - performance of smart antenna