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Cooperative transmission is an efficient method for wireless sensor networks (WSN) to decrease the power consumption of sensor transmitter and counter the detrimental effect of signal fading inherent to wireless channels. During the course, a key issue is how the sensor relay should handle the balance of assisting other node's communications and accomplishing its own tasks and what kind of situation...
With the development of cloud computing, IT users (individuals, enterprises and even public services providers) are transferring their jobs or businesses to public online services provided by professional information service companies. These information service companies provide applications as public resources to support the business operation of their customers. However, no cloud computing service...
Projection onto Convex Sets (POCS) and Smart Gradient Project (SGP) method to Active Constellation Extension (ACE) are proposed in this paper. The Peak-to-average ratio in Orthogonal Frequency Division Multiplexing (OFDM) system can be reduced through the constellation extension. The experimental results have shown that the proposed method is feasible and effective.
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