| Affiliation: | College of Application Technology, Yangtze Normal University, Chongqing 408100, P. R. China; 2 College of Communication Engineering, Chongqing University, Chongqing 400030, P. R. China;;College of Communication Engineering, b. College of Mechanical Engineering, Chongqing University, Chongqing 400030, P. R. China;College of Communication Engineering, Chongqing University, Chongqing 400030, P. R. China;College of Mechanical Engineering, Chongqing University, Chongqing 400030, P. R. China; Law School, Chongqing Posts and Telecommunication University, Chongqing 400065, P. R. China |
