Interference Aware Adaptive Routing for CDMA Based Mobile Ad Hoc Networks

In this paper, we propose an energy efficient routing algorithm for CDMA wireless ad hoc networks. The presented solution ensures the existing links throughput of active routes as the nodes enter or leave the network. As the new nodes join the network, the interference observed by the communicating nodes increases and as a result, decreases the link signal to interference plus noise ratio. Consequently, this increase in interference decreases the links throughput for all the communicating nodes. The new routing algorithm mitigates the effect of interference created by the change in number of nodes. In addition to the throughput, the energy consumption is critically analyzed in order to maintain the usage to a minimum level. The algorithm iteratively re-established the existing routes until the quality of service parameters; in particular, throughput, bit error rate, and energy consumption are satisfied. The simulation results show an increase in throughput for medium density networks. As the density increases, the improvement in the throughput is substantial. The energy consumption follows a similar pattern in improvement.