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A robust digital modulation scheme, called differential on-on keying (DOOK), is presented in this paper which outperforms the conventional on-off keying (OOK). In this scheme, a sinusoidal signal is transmitted during the first half of the bit duration while a replica or an inverted version of the sinusoidal signal is transmitted during the second half for logic one or logic zero, respectively. Non-coherent...
Multi-hop Wireless Sensors Networks (WSNs) consisting of several nodes and links are vulnerable to frequent node/ link failures. Energy saving at a node is another major consideration in WSN. Dynamic Source Routing (DSR) is a popular protocol commonly applied to WSNs; however, there is no provision of fault-tolerance and energy efficiency. In this paper, a new fault-tolerant routing and energy-efficient...
This paper proposes a modified hybrid method for WSN localization that combines Received Signal Strength (RSS) and Direction of Arrival (DOA) estimation based on MUSIC (Multiple Signal Classification) using circular antenna array with smoothing capability. Simulation results proves the enhanced performance obtained using the proposed hybrid method. This takes the form of successful detection of a...
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