Performance of routing strategy (bit error based) in fading environments for mobile adhoc networks

In wireless adhoc networks, typical limitations of routing protocols include high power consumption, low bandwidth and high error rates. A greater performance loss is experienced due to multipath fading and shadowing, when the path between source and destination node is obstructed. These problems, while receiving some attention, have not yet been much investigated. We have adopted probabilistic modeling to model the effect due to multipath fading and shadowing. The BER for each link affected by fading is estimated using the proposed model. A wireless routing protocol (WRP) maintains the BER associated with a particular link, a packet (data) is routed by the optimum BER route from a set of routes discovered by the protocol. It is found that the proposed model is capable of reducing the number of packet retransmissions, saves battery energy and also reduces overloading of a particular path by routing the packet through an optimal path (in terms of BER).