As per the following paper: http://ieeexplore.ieee.org/xpl/login.jsp?tp=&arnumber=376493&url=http%3A%2F%2Fieeexplore.ieee.org%2Fxpls%2Fabs_all.jsp%3Farnumber%3D376493
As per the following paper:
http://ieeexplore.ieee.org/xpl/login.jsp?tp=&arnumber=376493&url=http%3A%2F%2Fieeexplore.ieee.org%2Fxpls%2Fabs_all.jsp%3Farnumber%3D376493