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We propose a new method to reduce peak to average power ratio (PAPR) in CO-OFDM system by applying chicken swarm optimization (CSO) algorithm to optimize the initial phase of the subcarriers. Stimulation result shows that PAPR of CSO optimized signal is reduced by 5.5dB and 1.5dB compared with that of original signal and particle swarm optimization (PSO) optimized signal and BER performance is improved.
Swarm intelligence algorithms are applied to suppressing peak to average power ratio (PAPR) in CO-OFDM system by optimizing phase of subcarriers. The result shows that all of these algorithms can effectively reduce PAPR, and the PAPR of CSO optimized signal is reduced by 1.5dB, 0.77dB and 0.28dB compared with that of PSO, BSA and BA optimized signals.
Routing Protocol for Low-Power and Lossy Networks (RPL) is the Internet Engineering Task Force (IETF) standard for IPv6 routing in Low-power and Lossy Networks (LLNs). By using the Objective Function (OF) and a collection of routing metrics, it can build a Destination Oriented Directed Acyclic Graph (DODAG). There are two kinds of OFs specified by the IETF, Objective Function Zero (OF0) and Minimum...
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