scholarly journals Proactive Flexible Interval Intermittent Jamming for WAVE-Based Vehicular Networks

2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Hao Li ◽  
Xiaoshuang Xing ◽  
Anqi Bi ◽  
Jin Qian
Keyword(s):  
Numerical Analysis ◽  
Simulation Study ◽  
Energy Cost ◽  
Vehicular Networks ◽  
Physical Layer ◽  
Low Energy ◽  
Wireless Access ◽  
Time Length ◽  
Legitimate User ◽  
Free Interval

In this paper, we deal with the eavesdropping issue in Wireless Access in Vehicular Environments- (WAVE-) based vehicular networks. A proactive flexible interval intermittent jamming (FIJ) approach is proposed which predicts the time length T of the physical layer packet to be transmitted by the legitimate user and designs flexible jamming interval (JI) and jamming-free interval (JF) based on the predicted T . Our design prevents eavesdroppers from overhearing the information with low energy cost since the jamming signal is transmitted only within JI. Numerical analysis and simulation study validate the performance of our proactive FIJ, in terms of jamming energy cost and overhearing defense, by comparing with the existing intermittent jamming (IJ) and FIJ.

Recycling lead from spent lead pastes using oxalate and sodium oxalate and preparation of novel lead oxide for lead-acid batteries

RSC Advances ◽  
2015 ◽  
Vol 5 (115) ◽  
pp. 94895-94902 ◽  
Author(s):  
Cheng Ma ◽  
Yuehong Shu ◽  
Hongyu Chen
Keyword(s):  
Energy Cost ◽  
Lead Oxide ◽  
Low Energy ◽  
Sodium Oxalate ◽  
Lead Acid Batteries ◽  
Smelting Method ◽  
Lead Acid

A sustainable method, with minimal pollution and low energy cost in comparison with the conventional smelting method, is proposed for treating components of spent lead acid batteries with oxalate and sodium oxalate.

Microwave Torch Plasmas for Decomposition of Gaseous Pollutants

2004 ◽  
Vol 7 (1) ◽  
Author(s):  
Mariusz Jasiński ◽  
Jerzy Mizeraczyk ◽  
Zenon Zakrzewski
Keyword(s):  
Atmospheric Pressure ◽  
Energy Cost ◽  
Gas Flow ◽  
Coaxial Line ◽  
Low Energy ◽  
Gaseous Pollutants ◽  
Gas Flow Rate ◽  
Torch Discharge ◽  
Volatile Organic ◽  
Moderate Power

AbstractResults of the study of decomposition of volatile organic compounds (VOCs including Freons) in their mixtures with either synthetic air or nitrogen, and nitrogen oxides NOx in their mixtures with N2 or Ar in low (~ 100 W) and moderate-power (200-400 W) microwave torch plasmas at atmospheric pressure are presented. Three types of microwave torch discharge (MTD) generators, i.e. the low-power coaxial-line-based MID, the moderate-power waveguide-based coaxial-line MTD and the moderate-power waveguide-based MTD generators were used. The gas flow rate and microwave power (2.45 GHz) delivered to the discharge were in the range of 1÷3 l/min and 100÷ 400 W, respectively. Concentrations of the processed gaseous pollutants usually were from several up to several tens percent. The energy efficiency of decomposition of several gaseous pollutants reached 1000 g/kWh. It was found that the microwave torch plasmas fully decomposed the pollutants at relatively low energy cost. This suggests that the MTD plasma can be a useful tool for decomposition of highly-concentrated gaseous pollutants.

Physical Layer Security Performance of Mobile Vehicular Networks

2019 ◽  
Vol 25 (2) ◽  
pp. 643-649 ◽  
Author(s):  
Lingwei Xu ◽  
Xu Yu ◽  
Han Wang ◽  
Xinli Dong ◽  
Yun Liu ◽  
...  
Keyword(s):  
Physical Layer Security ◽  
Vehicular Networks ◽  
Physical Layer
Sign in / Sign up

Export Citation Format

Share Document