The radiation equation

In antenna books like Balanis and Kraus they start out by explaining the radiation mechanism. The first equation in these books is called the radiation equation:

L*dI/dt=q*a, where

L = length of the wire
I = current
q = charge
a = acceleration

It is said that this equation states that to create radiation there must be a time-varying current or an acceleration of charge. My problem is that I cannot from THIS equation see how an antenna radiates. Could you explain how THIS equation shows that an antenna (wire) radiates.

Usually radiation is defined as the power (Poynting vector) when the distance r goes to infinity. Then one can see that the em-fields must be proportional to 1/r to create radiation. But I cannot see how the above equation could explain the same!? I just started to study antennas, and got stuck on the first equation...

http://www.classictesla.com/download/emfields.pdf

That article explains radiation in an easy way and I enjoyed reading it. But my question was how the above stated RADIATION EQUATION can explain radiation.