ID 原文 译文
21435 针对双基地角使双基地ISAR(B-ISAR)  1维距离成像分辨率下降的问题，该文提出基于多量测向量(MMV)模型的复数近似消息传递(MCAMP)的B-ISAR 1维距离成像分辨率增强算法。 To solve the problem of declined resolution of Bistatic Inverse Synthetic Aperture Radar (B-ISAR)imaging by bistatic angle, a B-ISAR range profile resolution enhancement algorithm is put forward based onMultiple Measurement Vector (MMV) Complex Approximate Message Passing (MCAMP).
21436 首先，建立距离联合稀疏模型。 The range jointsparse model is established.
21437 然后，通过向量化处理将联合稀疏问题转换为块稀疏复数基追踪去噪问题，利用Kronecker积提出MCAMP算法进行求解，以得到不受双基地角影响的1维距离像。 By utilizing vectorization operation, the joint sparse problem is converted into ablock complex basis pursuit denoising problem. To achieve the range profile which is immune to bistatic angleinfluence, the MCAMP algorithm is proposed by using the Kronecker product.
21438 最后，通过快速傅里叶变换(FFT)代替矩阵与矩阵相乘进一步减少了计算复杂度，进而提高了算法的实现效率。 The Fast Fourier Transform(FFT) is introduced to instead of multiplication between matrix and matrix, which improves the efficiency ofthe proposed algorithm by reducing the computational complexity further.
21439 仿真成像结果验证了所提方法在重构精度和重构时间方面的优势。 Simulation imaging results verify theeffectiveness and efficiency of the proposed method.
21440 针对密集异构蜂窝网在非理想信道状态信息条件下的安全传输问题，该文分析了人工噪声对通信的可靠性和安全性的影响，在此基础上提出功率分配优化模型，在不同信道估计精度条件下给出了最优的功率分配因子。 To ensure secure transmission in dense heterogeneous cellular networks with imperfect Channel StateInformation (CSI), the influence of Artificial Noise (AN) on secure and reliable communication is analyzed, and a power split factor optimization model is presented to obtain the optimal value under different channel estimation accuracy.
21441 首先，考虑信道估计误差对合法信号传输以及人工噪声泄露的影响，推导了典型通信链路的连通中断概率和安全中断概率。 First, the connection outage probability and secrecy outage probability are deduced by considering the influence of channel estimation error on signal transmission and AN leakage.
21442 然后，在安全性和可靠性约束条件下建立功率分配优化模型以最大化系统安全吞吐量，并通过K维联合搜索算法得到每层网络的最优功率分配因子。 Then, a powersplit factor optimization model is presented, which maximizes the secrecy throughput subject to the security and reliability requirements. A K-dimensional search method is employed to solve the optimal power split factor of each tier.
21443 最后，仿真结果表明系统设置最优功率分配因子时，人工噪声方案可提升约15%的安全吞吐量。 Finally, the numerical results verify that the AN transmission scheme with optimal power split factor can increase secrecy throughput by about 15%.
21444 针对码索引调制(Code Index Modulation, CIM)相对于直接序列扩频在提升频谱利用率时，造成误比特率性能明显下降的问题，该文提出非正交-码索引调制(Non-orthogonal-Code Index Modulation, N-CIM)。 To deal with the problem that the bit error rate reduces obviously when the Code Index Modulation(CIM) is used to improve spectrum utilization, a novel Non-orthogonal-Code Index Modulation (N-CIM) isproposed.