| ID | 原文 | 译文 |
| 51637 | 消息传输成功率提升了6. 5%。 | and the message transmission success rate is increased by 6. 5%. |
| 51638 | 针对5G中下行正交频分复用(OFDM)系统由于多普勒频移和发送机与接收机晶振不同步引起频率误差导致接收机解调信号出错的问题，文章提出了一种主同步信号(PSS)和辅助同步信号(SSS)联合的频偏估计算法。 | Aiming at the problems of signal demodulation in 5 G downlink Orthogonal Frequency Division Multiplexing(OFDM) system due to Doppler frequency shift and frequency error caused by the non-synchronized transmitter and receiver crystal oscillators, a Primary Synchronization Signal(PSS) and Secondary Synchronization Signal(SSS) combined frequency offset estimation algorithm is proposed. |
| 51639 | 首先，对接收端的PSS和SSS分别与本地PSS和SSS进行互相关运算， | Firstly, the cross correlation values of the PSS and SSS at the receiving end are calculated with the local PSS and SSS, respectively. |
| 51640 | 其次将同一时隙第1个同步信号和物理广播信道块(PBCH)(SSB)的PSS互相关结果与第2个SSB的SSS互相关结果进行互相关运算计算初始频偏值; | Then, the PSS cross-correlation result of the first synchronization signal and Physical Broadcast Channel(PBC) block is used to calculate the initial frequency offset value with the SSS cross-correlation results of the second SSB block. |
| 51641 | 最后用同一个SSB中的PSS互相关结果和SSS互相关结果作互相关运算计算新的频偏值， | Finally, we use the PSS cross-correlation results and SSS cross-correlation results in the same SSB block to perform cross-correlation calculations to calculate the new frequency offset value, |
| 51642 | 并采用初始的频偏值对其进行极性修正，从而得到最终频偏。 | and also use the initial frequency offset value to correct its polarity to obtain the final frequency offset. |
| 51643 | 与基于PSS的频偏估计算法相比，该方法利用PSS和SSS进行联合频偏估计，提高了算法精度，同时将估计范围从[-3. 5，3. 5] kHz扩大到了[-7. 0，7. 0] kHz。 | Compared with the PSS-based frequency offset estimation algorithm, this method uses PSS and SSS for joint frequency offset estimation to improve the accuracy of the algorithm, and expands the estimation range from [-3. 5, 3. 5] kHz to [-7. 0, 7. 0] kHz. |
| 51644 | 智慧矿井平台能够提高采矿产量，其中通信、定位和传感系统能够保证矿工和矿物的安全。 | Intelligent mine platform is able to increase mining production, among which communication, positioning and sensing system can guarantee miner and mineral safe. |
| 51645 | 传统射频信号带宽不足、衰减严重和通信设备笨重等因素限制了其在矿井中的应用， | However, the lack of bandwidth of traditional redio frequency signal, serious attenuation and heavy communication equipment limit its application in mine. |
| 51646 | 第五代移动通信技术可应用在矿井下，但依然存在电磁干扰问题。 | 5 G signals can be applied in mines, but electromagnetic interference is still existed. |