移动信道
- 网络Mobile channel
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这种算法可应用于公共交换电话网(PSTN),Internet或移动信道的视频通信。
This algorithm can be applied in video communication of Public Switched Telephone Network ( PSTN ), Internet or mobile channel .
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无线移动信道在FSK系统中的建模与仿真
Modeling and simulation of wireless mobile channel in FSK system
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无线移动信道OFDM数据传输方式
The Scheme of Data Transmission for Mobile Radio Channel Using OFDM
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TurboTCM及在卫星移动信道中的性能分析
Turbo TCM and its Performance Analysis in Mobile Satellite Channel
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一种新的卫星移动信道Markov两状态统计模型
A Novel Statistical Model of Mobile Satellite Channel Markov 2-state
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Ka频段卫星移动信道中信号传输体制设计与仿真
Design and Simulation of Signal Transmission Scheme over Ka-band Mobile Satellite Channel
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在卫星移动信道中不同条件下Turbo码的纠错性能研究
Study on error - correction performance of Turbo codes in mobile satellite channel under different fading conditions
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针对频率选择性衰落MIMO移动信道,建立三维(3D)纯随机模型,并推导出3DMIMO信道模型的联合空时频相关函数。
A 3D statistical channels model for mobile frequency selective fading MIMO channels was proposed and a new joint space-time-frequency correlation function was derived .
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移动信道三状态Markov模型建立及其差错序列的计算机软件产生
Setting up of Markov model with three states for the mobile radio channel and generating of the error sequence on a computer
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该文根据频域相关的原理,提出了一种新的用于无线移动信道下的正交频分复用(OFDM)系统的时频同步算法。
A new time and frequency synchronization method based on frequency domain correlation for an Orthogonal Frequency Division Multiplexing ( OFDM ) system is presented .
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移动信道下采用Punctured卷积码实现不等错误保护的研究
Research on Unequal Error Protection with Punctured Convolutional Codes in Image Transmission System over Mobile Channels
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移动信道GMSK窄带数字调制解调系统
Narrow-band Digital Modem of GMSK in Mobile Channels
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正交频分复用(OFDM)是一种新型调制技术,特别适合在多径传播的无线移动信道中高速传输数据。
OFDM ( Orthogonal Frequency Division Multiplexing ) is a new modulation technology , it is suitable to high-data-rate transmission in the wireless transfer channel with multi-path transmission .
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从该模型可以推导到其它各种经典的卫星移动信道传播模型,并且具有良好的全波段特性(从UHF到Ka)和实际逼真度。
The LR 2 model suits well with the features of wide-band ( from UHF to Ka ) channels used by MSS .
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在高效时间同步与频偏估计算法的研究中,本文针对现有OFDM时频同步技术存在的问题,提出了一种新的用于无线移动信道下OFDM系统的高效时频同步算法。
In the research of high-efficient time-frequency synchronization algorithms of OFDM systems , this dissertation presents a new time and frequency synchronization method used in wireless mobile communication environments .
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由于移动信道的多种不确定因素,正交频分复用(OFDM)技术成为适应这种信道环境的传输技术之一。
Taking many uncertain factors in mobile communication channel into account , OFDM ( orthogonal frequency-division multiplexing ) is one of the promising techniques that meet such requirements with reasonable complexity .
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为了很好地利用移动信道,CDPD系统有一个功能复杂的MAC(媒质接入控制)层。
The CDPD system has a complex media access control ( MAC ) layer in order to make full use of mobile channels .
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同时给出一个适合于移动信道的GMSK通信系统与测试结果。
A model of GMSK communication system in mobile channels and its test rest results are also given .
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在相关的MIMO移动信道仿真表明:当信道在N个连续OFDM符号时间内保持基本不变时,二者的BER性能是一致的;
After simulation in mobile MIMO channel , we find the following results : when channel remains approximately invariant during N continuous OFDM symbols , both patterns show the same BER performance ;
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本文主要研究了在高速移动信道条件下联合应用多输入多输出(MIMO)和正交频分复用(OFDM)的无线移动通信系统。
This paper mainly studies a wireless mobile communication system which combines multiple-input multiple-output ( MIMO ) with orthogonal frequency division multiplexing ( OFDM ) technology under the high speed mobile channel .
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正交频分复用(OFDM,OrthogonalFrequencydivisionMultiplexing)是目前频谱利用率最高的一种技术,适合在多径传播和多普勒频移的无线移动信道中传输高速数据。
Orthogonal Frequency Division Multiplexing ( OFDM ) is a technique which has the highest spectrum efficiency currently , suitable for the multi-path transmission and Doppler frequency shift of the wireless mobile channel to transfer high-speed data .
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设计并仿真了适合Ka频段卫星移动信道的信号传输体制,仿真结果为最终实现方案提供了可靠的数据。
A signal transmission scheme was proposed , which is suitable for Ka-band mobile satellite channel . The numerical simulation results provide dependable data for final implementation .
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接下来介绍了无线移动信道的理论模型,并基于Jakes模型对无线移动信道进行了建模与仿真。
Then modeling and simulation of wireless channel is described .
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基于对无线移动信道特性的研究,本文对存在的问题进行了分析,提出了在软件无线电平台上实现OFDM系统的解决方案。
Base on the study of wireless communication channel characteristics , the article gives an analysis on the existing problems and proposes a solution : Implanting the OFDM technique in a software radio platform .
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针对CDPD(蜂窝数字分组数据)系统移动信道的特点,讨论了它的差错控制编码方案。
According to the characteristics of the mobile channels of CDPD systems , an error control coding scheme is discussed .
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基于信道容量规则和分组分割,构造自适应于AWGN和Rayleigh两种信道的多级编码系统,为移动信道编码调制系统的设计度量提供参考。
Based on capacity rule and block partitioning ( BP ) strategy , a robust multilevel coding ( MLC ) scheme is proposed for AWGN and Rayleigh fading channels .
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WiMAX移动信道条件下RS-CC级联码纠错系统的研究与设计
Research and Design on Error Correcting System of the Reed-Solomon-convolutional Concatenated Code Used in WiMAX Wireless Mobile Channel
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多径衰落是移动信道的主要特点,而OFDM技术有很好的抗多径衰落的特点,可以解决无线通信中高速率数据传输抗干扰的问题。
Multipath fading is the main characteristic of mobile communication channel , and OFDM technology can well resist multipath fading , so it can solve the problem of anti-interference when high speed data transmission in wireless communication .
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推导了简洁的非二进制符号MAP算法,并对TurboTCM在卫星移动信道下的性能进行了分析和仿真,结果表明TurboTCM的性能明显优于常规TCM。
In this paper , the succinct nonbinary MAP algorithm is derived , and the analytical performance of Turbo TCM technique is presented in mobile satellite channel . The simulation results show that Turbo TCM can achieve better performance than conventional TCM .
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针对非频率选择性Rice衰落MIMO移动信道,建立GBDB模型,并推导出新的MIMO系统的GBDB模型的空时联合相关函数。
Aiming at mobile frequency nonselective Rice fading MIMO channels , the GBDB ( geometrically based double-bounce ) channels model and a new joint space-time correlation function were proposed .