Implement Adaptive Modulation Technique to Reduce Bit Error Rate in Wireless Sensor Network

Wireless sensor network consists of large number of nodes and it is increasing in today’s environment because of cost, coverage and system deployment. They are used in civil applications and in most scenario it depends on bit error rate i.e. no. of bits transferred to the node. More number of bits are transferred, more is the no. of dead nodes which decreases the network’s lifetime. When more number of bits are transferred, some may be damaged in their routing path which results in their energy loss. Some bits may take more time to reach their destination. So the problem of delay occurs. So, the main objective of our proposed adaptive modulation approach is minimize bit error rate by consuming less energy and delay and the bits which are transferred not gets wasted in their path. When bit gets wasted, it would affects the Reliability of network. So, we focus our study on the performance analysis of four factors i.e. Reliability, Delay, Energy and Packet overhead and comparison of these parameters with existing approach. Simulation results which are shown in the command window of MATLAB shows that Reliability in 2000 rounds is 98 in existing approach and with adaptive modulation it is 200. Delay is 79 with existing approach and with adaptive modulation it is 39. Energy is 75 joules in 2500 rounds with existing approach and 46 joules with adaptive modulation. Packet overhead is 70 packets in 3000 rounds and with adaptive modulation it is 35 packets.