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带宽有效
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  bandwidth efficient
     Bandwidth Efficient Algorithms and Routing Protocols for Tactical Mobile Ad Hoc Networks
     战术移动自组网络带宽有效算法与路由协议研究
短句来源
     Bandwidth efficient transmission of LDPC codes over GF(q) with optimal constructions
     采用基于GF(q)的LDPC编码实现带宽有效传输及编码设计(英文)
短句来源
     Design of LDPC Codes over GF(q) for Bandwidth Efficient Transmission
     带宽有效传输的GF(q)上LDPC编码设计
短句来源
     This paper presents a new concatenated BCM code, in which a bandwidth efficient BCM code is used as the inner code, while RS code is taken as the outer code. Simulation result over the AWGN channel shows that coding gains up to 5.3dB can be obtained over the uncoded QPSK of almost the same bandwidth efficiency at the bit error rate (BER) of 10 -6 . It only has a 0.5dB distance from Shannon limit.
     给出一种新的级联分组调制 (BCM)码 ,其中内码选用带宽有效的 BCM码 ,外码采用 RS码 ,在高斯信道中的仿真结果表明 ,这种码字在误码率为 10 - 6 时较近乎相同带宽利用率下的未编码 QPSK系统有 5 .3d B的编码增益 ,距离 Shannon限只有 0 .5 d B;
短句来源
     In this paper, the authors combine irregular LDPC codes over GF(q) and q-ary modulations for bandwidth efficient transmission over AWGN channel and consider the optimization of the codes.
     研究了AWGN信道条件下基于有限域GF(q)的非规则低密度奇偶校验编码与q进制结合实现带宽有效传输和编码优化方法。
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     Realization of IPv6 Network Bandwidth Optimization in UMTS System
     UMTS系统中IPv6传输网带宽有效利用的实现
短句来源
     This subject adopts VC technique and Link Capacity Adjustment Scheme, which can guarantee the efficient adapt of transmission bandwidth and upper business bandwidth.
     课题采用了虚级联技术和链路容量调整方案, 能很好的保证传输带宽和上层业务带宽有效适配,进一步的提高了带宽利用率,并能够支持宽带业务的多路径传输(即虚级联的多个VC 采用不同的传输路径),实现多路径传输时的业务保护。
短句来源
     A high efficiency and low power dissipation architecture was presented to perform the 2-D discrete wavelet transform(2-D DWT) in JPEG2000.The chip area and power dissipation could be decreased significantly due to the reduction of the temporal buffer size and the average bandwidth of memory access.
     提出了一种高效低功耗的JPEG2000小波变换器的硬件结构,减小了二维离散小波变换器(2-D DWT)中暂存器的大小,降低了存储器的平均访问带宽,有效减小了芯片的面积和功耗.
短句来源
     Research on Efficient Estimation of Bandwidth along Network Path
     网络路径带宽有效测量方法的研究
短句来源
     To solve the above problems, this thesis addresses on adaptive multimedia transmission in mobile Internet. The objective of this work is to enable multimedia resources adapted to different network bandwidth, effectively fight against all kinds of transmission errors, and optimize the transmission quality of wireless multimedia.
     针对这一问题,本文将研究自适应的无线多媒体传输技术,以使多媒体资源能适应不同的网络带宽,有效对抗各种网络差错,充分满足无线多媒体业务的需求,从而优化多媒体传输质量。
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  相似匹配句对
     Effective Bandwidths in Real-time Computer Networks
     实时计算机网络的有效带宽
短句来源
     ON EFFECTIVE BANDWIDTH OF MULTI-STAGE INTERCONNECTION NETWORKS
     多级互连网络有效带宽研究
短句来源
     BANDWIDTH FOR TWO-STAR
     双星的带宽
短句来源
     From Effective ness to Success
     从有效到成功
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     all effective.
     全部有效
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  bandwidth efficient
Bit-Interleaved Coded Modulation with Iterative Decoding (BICM-ID) is a bandwidth efficient transmission, where the bit error rate is reduced through the iterative information exchange between the inner demapper and the outer decoder.
      
In this paper, we propose a novel energy and bandwidth efficient data caching mechanism, called GreedyDual Least Utility (GD-LU), that enhances dynamic data availability while maintaining consistency.
      
We report theoretical/numerical estimation of ultimate limits of bandwidth efficient delivery of high bit‐rate digital signals indoors.
      
This paper is motivated by the need for fundamental understanding of ultimate limits of bandwidth efficient delivery of higher bit-rates in digital wireless communications and to also begin to look into how these limits might be approached.
      
Bandwidth efficient MT-DS-SS via reduced subcarrier frequency spacing
      
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Ultra-high frequency modulation charateristics of domestic GaAlAs semiconductor la-sers are studied experimentally and analysed theoretically. It is found that the modulationbandwidth of these lasers is under 1000MHz. Analytical resuits show that the main factorsconfinding the modulation bandwidth of these lasers are the parameters L_s and C_j, thebonding wire inductance and the junction capacitance. A proposal for improving modula-tion characteristics of domestic semiconductor lasers is given.

本文对国产GaAlAs半导体激光器的超高频调制特性进行了实验研究和理论分析。发现国产GaAlAs激光器调制带宽和国外先进水平相比有较大差距。通过理论分析,弄清了限制国产半导体激光器调制带宽的主要因素。找到了提高国产半导体激光器调制带宽的有效途径。

A precise calculation of radiant emission characteristics of blackbody furnaces providedffor calibrating broad-band pyrometers, especially for infrared pyrometers, is presented in this paper.

本文绐出了标定宽带辐射高温计,特别是红外辐射温度计的黑体炉辐射特性的精密解。定义了波段(或带宽)有效发射率作为其主要特性参数,建立了数学模型,并以工厂实际使用的锥一筒非等温定标黑体炉为例在计算机上求得了典型解。从与相应的光谱有效发射率解的比较中可见:采用本法将较大地提高宽带辐射高温计的定标精度。

In this paper, we seport the coleulation of electronic states in ionic crystals in the fram-work of molecular cluster model. A convensinal CNDO/INDO program for the calculation of mole cular structure was revised to meet the requirments of calculation for electronic states of ionic crystals.

本文报道在分子簇(MC)模型的框架内,用半经验CNDO/INDO方法对离子晶体及其点缺陷的电子态进行计算。引用计算分子结构的CNDO/INDO程序加以改造,使之适合于离子晶体及其点缺陷的计算。 在此基础上,计算了LiF,NaF,LiCl,NaCl四种晶体的价带宽、禁带宽、有效离子电荷等参数和F色心基态能级的位置。所得结果与以前报道的各种计算和实验结果进行了比较。

 
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