| ID | 原文 | 译文 |
| 51897 | 仿真结果表明，在大规模MIMO场景下，文章提出的算法表现出了良好的性能及较低的复杂度。 | The simulation results show that the proposed algorithm has better error performance and lower complexity. |
| 51898 | 针对分数阶傅里叶变换(FRFT)对啁啾(Chirp)信号进行盲检测时存在运算量大的问题，文章提出一种针对Chirp信号参数估计的盲检测方法。 | In view of the fact that Fractional Fourier Transform(FRFT) has large computational complexities when the Chirp signals are detected blindly. This paper proposes a blind detection method for Chirp signal parameter estimation. |
| 51899 | 首先利用改变窗长相位差法对Chirp信号进行粗估计，并利用最小二乘法进行拟合得到Chirp信号调频斜率粗估计值， | Firstly, the Chirp signal is roughly estimated by window-length changing phase difference method and the least square method is used to fit and obtain the rough estimation value of the Chirp signal frequency modulation slope. |
| 51900 | 然后通过FRFT对Chirp信号进行精细估计，并利用二分法对FRFT的阶次进行搜索，进一步降低算法的运算量。 | Then, the Chirp signal is precisely estimated by FRFT, and the order of FRFT is obtained by Bisection method, which further reduces the computational complexity of the algorithm. |
| 51901 | 仿真结果表明，利用改变窗长相位差法和FRFT联合检测Chirp信号的方法，在低信噪比下具有较高精度的估计值，且其归一化均方误差接近克拉美罗下界， | The simulation result shows that the method of detecting the Chirp signal by using the modified window-length changing phase difference method and the FRFT at low Signal to Noise Ratio(SNR) has higher precision estimation value, and its normalization mean square error is close to Cramer-Rao lower bound. |
| 51902 | 并且与FRFT穷举检测相比，极大地减少了运算量，具有很好的工程应用意义。 | The method compared with FRFT exhaustive detection greatly reduces the computational complexity and has good engineering application significance. |
| 51903 | 水下可见光通信(UVLC)作为水下无线通信技术的一个重要分支，在海洋环境监测与水下军事斗争等领域有着十分广泛的应用。 | Underwater Visible Light Communication(UVLC), as an important branch of underwater wireless communication technology, is widely used in the field of marine environmental monitoring and underwater military struggle. |
| 51904 | 文章首先简单介绍了UVLC的研究背景、意义及难点， | This paper first briefly introduces the research background, significance and difficulties of UVLC. |
| 51905 | 接着从光学衰减建模、垂直信道建模与湍流信道建模3个角度对水下可见光信道建模技术进行综述， | Then we summarize the underwater visible light channel modeling technology from three aspects including optical attenuation modeling, vertical channel modeling and turbulence channel modeling. |
| 51906 | 并调查了水下可见光不同调制技术相关的研究成果。 | Finally, we investigate the research results related to different underwater visible light modulation technologies. |