ID 原文 译文
7414 该方法首先通过非线性变换抑制脉冲噪声,然后进行离散分数阶傅里叶变换(discrete fractional Fourier transform,DFRFT),通过分数阶傅里叶变换(fractional Fourier transform,FRFT)的结果构造出识别特征量,最后通过支持向量机(support vector machine,SVM)完成对LFM信号的识别。 First by nonlinear transform to suppress impulse noise, the method and discrete fractional Fourier transform (discrete 'fractional Fourier transform, DFRFT), through the fractional Fourier transform, fractional Fourier transform, the FRFT) constructed the result of the identification characteristics, finally, support vector machine (support vector machine, SVM) to complete the recognition of LFM signal.
7415 仿真实验结果表明,在混合信噪比(mixed signal-to-noise ratio,MSNR)为-15dB时正确识别率高于94%。 The simulation results show that the hybrid SNR (mixed signal - to - noise thewire, MSNR) for 15 db recognition correct rate is higher than 94%.
7416 针对传统FitzHugh-Nagumo(FHN)模型检测方法在α稳定分布噪声条件下检测性能退化的问题,在α稳定分布的统计特性基础上,将三倍分散系数异常值剔除准则引入FHN模型检测方法,提出基于三倍分散系数-FHN模型的超宽带冲激无线电(ultra wideband-impulse radio,UWB-IR)检测方法。 For traditional FitzHugh - Nagumo (FHN) model checking method under the condition of alpha stable distribution noise detection performance degradation problems, the alpha stable distribution based on the statistical properties of the three times rule of excluding abnormal dispersion coefficient values into the FHN model test method, based on three times the dispersion coefficient, FHN models of ultra-wideband impulse radio (ultra wideband impulse moisturiser - radio, UWB - IR) detection method.
7417 此外,对传统三倍分散系数准则进行改进,使用样本分位数法对α稳定分布参数进行估计,避免了传统三倍分散系数准则对α稳定分布参数先验信息的依赖,使其适合全盲条件下的UWB-IR信号检测。 In addition, three times of the traditional dispersion coefficient criterion was improved, using the method of sample quantile alpha stable distribution parameter estimation, and avoids the traditional three times the dispersion coefficient criterion of alpha stable distribution parameters depend on a priori information, make it suitable for total blindness under the condition of UWB signal detection - IR.
7418 仿真实验表明,该算法能有效抑制α稳定分布噪声中的强脉冲,可较好地重构UWB-IR信号波形,实现了强α稳定分布噪声条件下UWB-IR信号的有效检测。 Simulation experiments show that the proposed algorithm can effectively restrain strong pulse of alpha stable distribution noise, can be better reconstructed UWB - IR signal waveform, achieve the strong alpha stable distribution under the condition of noise signal detect effectively the UWB - IR.
7419 为了满足非正交多址接入(non-orthogonal multiple access,NOMA)系统下行链路的一个多用户集群中不同用户的业务需求,提出了具有用户服务质量(quality of service,QoS)保证与最大最小(max-min)公平性准则的功率分配算法。 In order to satisfy the nonorthogonal multiple access (non - orthogonal multiple access, NOMA) system down link a multi-user cluster business needs of different users, puts forward the user service quality (quality of service, QoS) to ensure maximum minimum (Max - min) fairness criterion of power allocation algorithm.
7420 针对不同用户需求,制定了在基站发射总功率与用户满足的最低速率要求约束下的maxmin公平准则的优化问题模型,并利用二分法与Karush-Kuhn-Tucker(KKT)条件对复杂的非凸问题进行求解。 According to different user requirements, formulated the total power in base stations and users to meet the minimum rate under the constraint of maxmin fair criterion optimization model, and by using dichotomy and Karush - Kuhn - Tucker (KKT) conditions of complex non-convex problem solving.
7421 仿真结果表明,该功率分配算法既保证了用户的QoS要求又满足了用户的公平性准则,并且NOMA系统的吞吐量相较于传统多址接入系统的吞吐量有较大的提升。 Simulation results show that the power allocation algorithm is to ensure the QoS requirements of users and satisfy the user the principles of fairness, and NOMA system throughput than traditional multiple access system throughput has larger ascension.
7422 为了利用跳频信号的空域特征参数辅助多跳频信号的网台分选,在空时频分析的基础上,提出一种基于多重信号分类(multiple signal classification,MUSIC)对称压缩谱(MUSIC symmetrical compressed spectrum,MSCS)的多跳频信号二维波达方向(two dimensional direction of arrival,2D-DOA)高效估计算法。 To make use of the airspace characteristic parameters of frequency hopping signal, auxiliary frequency hopping signal more network station sorting in the air, on the basis of time-frequency analysis, put forward a kind of based on multiple signal classification (multiple signal classification, MUSIC) symmetrical compression spectrum (MUSIC symmetrical compressed spectrum, MSCS) of two-dimensional frequency hopping signal DOA (two dimensional direction of concatenated, 2 d - DOA) estimation algorithm and high efficiency.
7423 首先根据跳频信号的时频域特征,构建每一跳的空时频矩阵(spatial time-frequency distribution,STFD),获取时频域的协方差矩阵; First of all, according to the characters of frequency hopping signal in the time-frequency domain, build each jump empty time-frequency matrix (spatial time - frequency distribution, STFD), obtain the time-frequency domain covariance matrix;