Multistatic scatter radio sensor networks for extended coverageMultistatic scatter radio sensor networks for extended coverage Peer-Reviewed Journal Publication Δημοσίευση σε Περιοδικό με Κριτές 2019-09-032018enScatter radio, i.e., communication by means of reflection, has been recently proposed as a viable ultra-low power solution for wireless sensor networks (WSNs). This paper offers a detailed comparison between monostatic and multistatic scatter radio architectures. In monostatic architecture, the reader consists of both the illuminating transmitter and the receiver of signals scattered back from the sensors. The multistatic architecture includes several ultra-low cost illuminating carrier emitters and a single reader. Maximum-likelihood coherent and noncoherent bit error rate (BER), diversity order, average information, and energy outage probability comparison is performed, under dyadic Nakagami fading and filling a gap in the literature. It is found that: 1) diversity order, BER, and tag location-independent performance bounds of multistatic architecture outperform monostatic; 2) energy outage due to radio frequency (RF) harvesting for passive tags, is less frequent in multistatic than monostatic architecture; and 3) multistatic coverage is higher than monostatic. Furthermore, a proof-of-concept digital multistatic scatter radio WSN with a single receiver, four low-cost emitters, and multiple ambiently-powered low-bitrate tags, perhaps the first of its kind, is experimentally demonstrated (at 13 dBm transmission power), covering an area of 3500 m2. Research findings are applicable in the industries of WSNs, RF identification, and emerging Internet-of-Things. http://creativecommons.org/licenses/by/4.0/IEEE Transactions on Wireless Communications1774522-4535 Alevizos Panagiotis Αλεβιζος Παναγιωτης Tountas Konstantinos Τουντας Κωνσταντινος Bletsas Aggelos Μπλετσας Αγγελος Institute of Electrical and Electronics Engineers Multiple access interference Nakagami channels Radio frequency wireless sensor networks Scattering parameters