Optimization of Power in Rayleigh Fading Environment for WSNs
Hua Chai · Journal of Military Communications Technology · 2010
In Wireless Sensor Networks(WSNs),where nodes are likely to rely on limited power,optimizing the transmit power can prolong the life of the network.With the given threshold of the end-to-end packet error rate as constraint,the transmit power in Rayleigh fading environment was optimized,the expression of optimal transmit power was presented,the effect of the BCH error correction coding on the optimal transmit power was investigated,and finally the numerical result and the simulation were shown.The results demonstrate that,with given density of nodes and the end-to-end packet error rate,carefully choosing the data rate can optimize the transmit power,and that the use of error correction coding can further decrease the optimal transmit power.