ID 原文 译文
53437 实验分析表明该方法对各种复杂攻击，如图像旋转、光照变化、图像滤波等具有较好的稳健性， Test results indicate that the proposed method is robust to various types of attacks such as image rotation, illumination change and filtering, etc.
53438 对比基于非负矩阵分解的图像哈希方法在图像识别应用中具有更好的性能。 It is superior in image identification compared with the image hashing using non-negative matrix factorization.
53439 本文提出了一种 MIMO OFDM 系统中使用 BLAST 空时码的优化型 Turbo 迭代检测算法。 In this paper, an optimized Turbo-BLAST detection algorithm employing the BLAST scheme for MIMO OFDM systems is proposed, which adopt the soft-output MMSE-PIC detector.
53440 该算法采用基于软输出的 MMSE-PIC 检测器，并在联合考虑信道估计误差与信道空间相关性的基础上，最优化该 MMSE 滤波器的权系数，从而改善了由于实际中存在信道估计误差和信道空间相关性所导致的软信息提取精度恶化现象。 With taking into account the channel estimation error and channel spatial correlation, the weight of the MMSE filter is optimized, so that the decreased accuracy performance of extracting soft information is improved for existing the channel estimation error and channel spatial correlation in practice.
53441 此外，文中进一步推导获取了该最优化权系数的闭式解和迭代循环的外信息表达式。 Furthermore, the closed-form solution of the optimal weight and the extrinsic information expression of the iterative loop are concluded.
53442 最后，仿真结果也表明在不同的信道估计误差和信道空间相关性条件下，该算法的 BER 性能总优于传统型软输出的 MMSE-PIC 迭代检测算法， Finally, simulations also show that the algorithm outperform the traditional MMSE-PIC iterative detection algorithm in the performance of the BER by the different conditions of channel estimation error and channel spatial correlation.
53443 且计算复杂度相对增加较小。 At the same time, the computational complexity of the designed algorithm increased less.
53444 为了提高混沌系统的复杂性，本文基于最新提出的简化 Lorenz 系统，采用正弦函数扰动方法和非奇异变换，设计了一个具有四翼吸引子结构的超混沌系统。 To improve the complexity of a chaotic system, a sinusoidal forcing function and a nonsingular transformation are applied to generate hyperchaotic system with four wings structure based on the simplified Lorenz system in this paper.
53445 通过计算 Lyapunov 指数、分岔图、相图和 Poincaré 截面等方法分析了该系统的动力学特性， Dynamics of the hyperchaotic and four-wing attractor system are analyzed and verified by means of Lyapunov exponent spectrums, bifurcation diagrams, phase portraits and Poincaré sections.
53446 分析表明该系统具有丰富的动力学行为。 Results of numerical analysis and simulations show the four-wing hyperchaotic system has complex dynamical behaviors.