ID 原文 译文
49056 实验结果表明,该方法能够在同一个权衡空间详细考察比较所有备选方案的多个属性,从而为系统设计和评估提供更全面的参考依据。 The experimental results show that the method can be in the same measure space detailed investigation to compare all alternatives to multiple attributes, which provide a more comprehensive for system design and evaluation of the reference.
49057 在分析符号先验信息对期望最大(expectation maximization,EM)算法收敛特性影响的基础上,提出了一种基于非规则低密度奇偶校验(low-density parity check,LDPC)码的迭代相位同步算法。 A priori information on the analysis of the symbols on the expectation maximum (expectation maximization, EM) algorithm convergence properties, on the basis of a based on the rule of low density parity check (low density parity check, LDPC) code iterative phase synchronization algorithm.
49058 由于EM算法的收敛速度与译码器提供的信息量密切相关,新算法利用非规则LDPC码的不等度分布特性,其度数高的变量节点在初始译码过程中能快速正确译码并为EM同步器提供高可靠的先验信息,从而改善EM同步器的收敛性能。 Due to the convergence rate of the EM algorithm and decoder provide is closely related to the amount of information, the new algorithm using the irregular LDPC code degree distribution characteristics, its high degree of variable node in the initial can quickly correct decoding and decoding process for EM synchronizer provides highly reliable prior information, thus improving the convergence of the EM synchronizer.
49059 仿真结果表明,基于非规则LDPC码的EM迭代同步算法具有更大的相位估计范围和更快的收敛速度。 The simulation results show that the EM iterative synchronization algorithm based on irregular LDPC code has a larger phase estimation range and faster convergence speed.
49060 针对网络控制系统中随机时延很难精确预测的问题,首次将核主成分分析(kernel principal compo-nent analysis,KPCA)与最小二乘支持向量机(least squares support vector machine,LSSVM)结合对随机时延进行预测,KPCA对输入随机时延序列降维,消除重复性与噪声,减少LSSVM的运算量,降维后的时延序列通过LSSVM算法预测时延值。 Aiming at random time delay in networked control systems are difficult to accurately predict the questions, the first to use nuclear principal component analysis (kernel principal compo - nent analysis, KPCA) and least squares support vector machine (further squares support vector machine, LSSVM) combined with forecast random time delay, the KPCA to input sequence dimension reduction of random time delay, eliminate the repetitive and noise, reduce the computational complexity of LSSVM, dimension reduction after the delay sequence by LSSVM algorithm to predict delay value.
49061 仿真结果表明,基于KPCA与LSSVM的时延预测方法的预测精度高于其他的预测方法。 The simulation results show that the time delay prediction method based on KPCA and LSSVM forecasting accuracy is higher than other forecasting methods.
49062 推导了计算一维时变磁化等离子体的时域有限差分(finite difference time domain,FDTD)的递推式,分析了一维情况下的时变等离子体中电磁波的频域特性,并通过选取算例,验证了该方法的准确性。 Calculation of one-dimensional time-varying magnetized plasma was deduced finite difference time domain (finite difference time domain, FDTD) recursive type, analyzed the one-dimensional case of time-varying frequency domain characteristics of electromagnetic wave in plasma, and analyzes the example, the accuracy of the proposed method is verified.
49063 对将等离子体频率按时间分为3个阶段的复杂情况进行了计算分析,通过改变时变磁化等离子体占空比,得出了时变磁化等离子体对电磁波有频率漂移和频谱展宽等规律。 On the plasma frequency is divided into three stages according to time complex situation has carried on the calculation and analysis, by changing the time-varying magnetized plasma duty ratio, the time-varying magnetized plasma is obtained for electromagnetic wave frequency drift and the rule of the spectrum broadening, etc.
49064 在多用户协同模型中,将协同伙伴数目与信号空间分集中星座维数相结合,提出了一种高效的编码协同方案。 In multi-user collaborative model, divide the number of cooperative partners and signal space concentrated constellation dimension, this paper proposes a efficient coding scheme together.
49065 采用比特交织编码调制技术,目的端通过信号空间分集和迭代译码提升系统性能。 The bit mixed code modulation technology, through signal space diversity and iterative decoding to enhance system performance.