Channel capacity in dense MANETs for a propagation model considering the law of conservation of energy and fading

The present work investigates the behavior of the signal to noise and interference ratio (SNIR) and communication channel capacity of mobile ad hoc networks (MANETs) as a function of the number of nodes. From the propagation model that considers attenuation with the distance, a change was proposed such that, as the transmitter arbitrarily approximates to the receiver, the channel gain depends only on the fading, in order to have the received power not greater than the transmitted power; therefore, obeying the law of conservation of energy. Results were obtained analytically and by simulations and they show that the SNIR and capacity go to zero as the node density in the network increases for the path loss parameter α ≥ 2, indicating that communication among close neighbors is not feasible in such MANETs.