ID 原文 译文
26455 分析了对角加载自适应匹配滤波器(diagonally loaded adaptive matched filter，DL-AMF)和对角加载自适应相干估计器(diagonally loaded adaptive coherence estimation，DL-ACE)的检测性能；推导了二者的渐近统计分布，得到了解析的虚警概率(probability of false alarm，PFA)和检测概率(probability of detection，PD)表达式。 Analyzed the diagonal loading adaptive matched filter (diagonally the loaded the adaptive matched filter, DL - AMF) and adaptive coherent diagonal loading estimator (diagonally the loaded the adaptive coherence estimation, DL - ACE) detection performance;Asymptotic statistical distribution of the two was deduced, and obtained the analytic false-alarm probability (aim-listed probability of false alarm, PFA) and detection probability (aim-listed probability of detection, PD) expression.
26456 与常规AMF和ACE相比，尤其是在训练样本不足的情况下，DL-AMF和DL-ACE的检测性能大为提高，并且二者都具有渐近恒虚警(constant false alarm rate，CFAR)特性。 Compared with the conventional AMF and ACE, especially in the case of lack of training samples, DL - AMF and DL - ACE detection performance is greatly improved, and both have asymptotic constant false alarm (constant false alarm rate, CFAR) features.
26457 研究了基于定向天线的多中继节点放大转发协同通信技术。 Studied the multiple relay nodes based on directional antenna amplifier forward cooperative communication technology.
26458 首先，从理论上推导了全向发送-全向接收(without beamforming transmit-receive，N-BF)，定向发送-全向接收(beamforming transmit-without beam-forming receive，T-BF)以及定向发送-定向接收(beamforming transmit-beamforming receive，TR-BF)3种模式下信道容量及其中断概率。 First of all, all is proved theoretically to send - all to receive (without beamforming transmit - the receive, N - BF), directional sending - omni-directional receiving (beamforming transmit - without beam - forming the receive, T - BF) and directional sending - directional receiving (beamforming transmit beamforming - the receive, TR - BF) channel capacity and the interrupt probability of three kinds of mode.
26459 然后，结合具体的数值仿真对不同模式下的信道容量和中断概率分别进行了详细的分析比较。 Then, combined with the specific numerical simulation for the channel capacity and the interrupt probability of different mode separately carried on the detailed analysis and comparison.
26460 结果表明，TR-BF性能最优，TR-BF以及T-BF相比N-BF而言，系统受噪声影响更小。 Results show that the TR - BF optimal performance, the TR - BF and T - BF, compared with N - BF system is less affected by noise.
26461 提出了一种基于循环前缀的OFDM(正交频分复用)系统定时同步的低复杂度算法。 Is put forward based on the cyclic prefix of OFDM (orthogonal frequency division multiplexing) systems low complexity of timing synchronization algorithm.
26462 算法利用相关函数的结构性质，可以消除冗余信息，直接针对相关函数的峰值位置进行求解。 Algorithm using the structure properties of correlation function, can eliminate redundant information, to find the solution directly to the peak position of the correlation function.
26463 同时，通过多项式来拟合同步函数，从而在保证得到正确的信道时延估计值的同时有效降低算法时间复杂度。 At the same time, the step to quasi contract by polynomial function, to ensure the correct channel delay estimation at the same time, effectively reduce the time complexity.
26464 仿真结果证明，本文算法在平坦衰落信道和频率选择性衰落信道下均能保持良好的性能，并且计算所需时间远小于其他基于循环前缀的盲同步算法。 Simulation results show that the algorithms in flat fading channel and frequency selective fading channel can maintain good performance, and the computation time required is far less than other blind synchronization algorithm based on cyclic prefix.