ID |
原文 |
译文 |
47066 |
最后,接收端根据收到的有损数据利用压缩感知的方法重构原始信号。 |
Now, the raw signal could be recovered from the lossy data at the receiver node using CS reconstruction algorithms. |
47067 |
进一步根据压缩感知重构和无线通信的相关原理,推导出允许使用的发送端最小压缩率和最大分组长度。 |
Furtherly, according to the theory of CS reconstruction and the formula of packet reception rate in wireless communica-tion, the minimum compression ratio and the maximum packet length allowed were obtained. |
47068 |
大量仿真实验表明,所提方法不仅可以保证数据的可靠准确传输,还能减小发送数据量,降低传输时延和节点能耗。 |
Extensive simulationsdemonstrate that the reliability of data transmission and its accuracy, the data transmission volume, the transmission delayand energy consumption could be greatly optimized by means of proposed method. |
47069 |
在车联网中,同时使用多个虚假身份的 Sybil 攻击,在网络中散布虚假消息,都易造成资源的不公平使用和网络混乱。 |
In VANET, the Sybil attack simultaneously using multiple forged identities can easily cause the injustice ofresource usage and make networks in a mess by distributing false messages. |
47070 |
针对这一问题,提出快速识别车辆虚假位置的事件驱动型轻量级算法, |
To solve this problem, an event-drivenlightweight algorithm was proposed, which could identify vehicles false position quickly. |
47071 |
当车辆出现在另一车辆的安全区域内,启动快速识别两车辆是否重叠的几何交叉模型(GCR, geometrical cross-recognition)算法,检测声称虚假位置的错误行为; |
When one vehicle appeared in-side another’s safety zone, a geometrical cross-recognition algorithm to calculate the overlap between vehicles to detectfalse position claiming was presented. |
47072 |
同时,根据证实车辆收集的邻居范围内的局部车辆,建立位置偏差矩阵(PDM, positiondeviation matrix),进一步识别交叉车辆中的 Sybil 节点。 |
At the same time, according to the neighbors within the confirming vehicle’s radiorange, position deviation matrix was established further to identify the Sybil node of two overlap vehicles. |
47073 |
性能分析和仿真实验表明,安全区域驱动下的轻量级算法识别速度快,检测率高,在车辆定位误差较低时性能更好; |
The perfor-mance analysis and simulation results show that the lightweight algorithm driven by safety zone demonstrates fast identi-fication and high detection rate, especially when GPS error is very low. |
47074 |
安全区域的引入也均衡了车辆密度过大时造成的通信负载影响, |
The imported safety zone can also balance thecommunication load impacting by heavy vehicular density. |
47075 |
与同类算法相比,通信处理时延较低。 |
And the communication processing delay is lower than otherapproaches. |