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Asynchronous sleep schedule and geographical routing are two efficient and scalable solutions for wireless sensor networks (WSNs). However, the schedule may degrade the delay performance of the routing protocol, and the optimal combined utilization of these two solutions is still an open question. In this letter, we propose a geographical-based opportunistic routing protocol for asynchronous WSNs...
In order to reduce the outage probability of cooperative communication, a hybrid forwarding HARQ scheme in wireless network is proposed. In this scheme, if the relay decoding unsuccessfully until the last time, the Amplify-and-Forward protocol will be used to retransmit. Otherwise, the code cooperation will be used. Both of the Chase Combining and Incremental Redundancy combining is used in this scheme...
A shipborne helicopter platform, which can compensate wave motion, is useful for a helicopter to land and take off safely. In order to solve the time delay problem of hydraulic cylinder, the prediction for the generalized heave motion (the coupling result of roll, pitch and heave) of the platform is needed. An Automation Regressive (AR) model is proposed to do the short time prediction for its low...
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