A novel collision detection scheme for Wireless Sensor Networks using received signal dynamic range statistics

Wireless Sensor Networks (WSNs) have a limited power source which is a small battery installed in each node. The main concern in designing WSNs is how to extend the lifetime of network nodes. Power consumption in WSNs has been investigated in a lot of research. In this paper we propose a novel power saving algorithm which has a low computational complexity in comparison with existing coding/decoding schemes. Instead of decoding every received signal our proposed algorithm avoid the high computational complexity via analyzing the sanity of the received packet. So, the receiver can detect collisions and determine when the transmitted signals need to be decoded. Our proposed algorithm achieves a significant power saving due to avoid decoding of transmitted signals which involve in collisions. Based on two proposed algorithm metrics, thresholds, modulation schemes and different scenarios, we use MATALB to show performance gains of our proposed algorithm.