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A novel cooperative Hybrid-ARQ protocol was presented on the basis of network coding (C-HARQ-NC). Two users communicated with the base station with the assistance of a relay node. Relay node responded the repeat request and processed two users' incremental redundancy frames with physical-layer network coding, i.e. signal superposition modulation, before transmitting to the base station. Multi-user...
This paper studies a Navigation Marks Remote Monitoring and Control System (NMRMCS) based on Wireless Sensor Network (WSN) and Differential Global Positioning System (DGPS). We designed NMRMCS installed in mountain area using WSN and DGPS to increase the positioning precision of navigation marks. We tested communicating distance of nodes by measuring the signal strength both in open region and wooden...
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