ID 原文 译文
54127 在多普勒容限内以归一化自模糊函数旁瓣与互模糊函数之和的最小化为准则建立优化设计模型,提出了一种基于交替方向乘子法(Alternating Direction Method of Multipliers,ADMM)的低复杂度信号优化方法。 Within the Doppler tolerance, an optimal design model is established by minimizing the sum of the side lobes of the normalized auto ambiguity function and the cross-ambiguity function, and a low-complexity signal optimization method based on the Alternating Direction Method of Multipliers(ADMM) is proposed.
54128 仿真结果表明,基于ADMM优化后的LFM-PC信号在多普勒容限内具有较好的波形分集增益与波形隔离度,优化算法具有收敛速度快,运算量低的特点。 The simulation results show that the optimized LFM-PC signal based on ADMM has better waveform diversity gain and waveform isolation within the Doppler tolerance, and the optimized algorithm has the characteristics of fast convergence speed and low computational complexity.
54129 本文研究了一个大规模单入多出上行链路系统,其中单天线节点需要将数据及时且可靠地传送给具有大规模天线阵列的基站。 This paper studies a massive single-input multiple-output uplink system, in which a single-antenna transmitter needs to transmit data to the receiver with a large-scale antenna array in a timely and reliable manner.
54130 在该系统中,假设发送端与基站间的信道系数在连续两个符号周期内保持恒定,且每两个符号周期独立变化一次。 In this system, the channel coefficients are assumed to remain constant during two consecutive symbol periods and change independently during the next two time symbol periods.
54131 针对该快速衰落信道模型,本文提出了一种针对大规模唯一可分解星座(Massive uniquely factorable constellation,MUFC)的映射方案,以解决系统瞬时信道状态信息获取与可靠性低的难题。 For such a system model, we propose a mapping scheme for massive uniquely factorable constellation(MUFC), with an emphasis on avoiding the instantaneous channel state information acquisition as well as improving the system's reliability.
54132 具体地,本文首先基于黎曼测度准则对MUFC进行分割。 Specifically, we first perform constellation segmentation for the MUFC based on a Riemannian distance(RD) criterion.
54133 然后,利用格状编码思想,给出MUFC星座的具体映射方案, Then, using the trellis coding method, a specific mapping scheme for the MUFC constellation is provided.
54134 理论仿真结果表明该映射方案能够增大调制输出信号序列间的最小黎曼距离(Riemannian distance,RD),从而提升接收端RD检测器的误差性能。 The theoretical simulation results show that the mapping scheme can increase the minimum RD between the modulated output signal sequences and improve the RD detector's error performance at the receiving end.
54135 最后,仿真结果进一步验证了所提方案的有效性。 Finally, the simulation results verify the effectiveness of our proposed scheme.
54136 广义随机傅里叶变换(GRFT:Generalized Radon-Fourier Transform)是一种广义的MTD(Moving Target Detection)算法,通过搜索目标的速度、加速度、加加速度等高阶运动信息,补偿多个脉冲间的相位来完成相参积累。 Generalized Radon-Fourier Transform(GRFT) is a generalized algorithm of Moving Target Detection(MTD), which achieves coherent integration by compensating the phase of multiple pulses through searching the target's velocity, acceleration and jerk.