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In compressed sensing (CS), the orthogonal matching pursuit (OMP) algorithm is considered as a typical reconstructed algorithm. But, it needs a great amount of calculations to reconstruct the original signal. In order to reduce the OMP algorithm computational complexity, we proposed the improved reconstruction algorithm, which combines with quantum-behaved particle swarm (QPSO) algorithm and OMP algorithm...
The theory of Ultra-wideband radar and the through wall detection of human model based on UWB radar are briefly introduced. The target criterion with wavelet packet transform is deduced and the procedure for the through wall human detection with statistical process control is constructed. The radar echo signals are collected at stationary and moving status of human being for Brick wall. The experimental...
Synthetic Aperture Radar (SAR) signal model is considered as a series of echo signals in range direction. The procedure of Principal Component Analysis (PCA) is introduced which is used as transformation basis to sparsify the SAR signals. The joint Compressive Sensing (CS) and PCA algorithm is derived to realize SAR raw data sparse and compressive measurement. The numerical simulation results demonstrate...
As one of the most important restrictions on the application of wireless sensor network, energy consumption is also the main factor which ZigBee specification focuses on. However, current network formation and routing protocols described in ZigBee specification do not fully address power consumption issues. Most of improvements were tested under single network condition so far and the optimization...
Both the hierarchical tree routing and the table-driven routing algorithm are available in Zigbee specification. However, the routing selection method is not included in the standard. In this article, we analyzed the effect of the node mobility and the change of the network dimension in Zigbee networks. We used OPNET modeler to simulate the Zigbee networks. The simulation results showed the performances...
In ZigBee specification, both the hierarchical tree routing and the table-driven routing algorithm are available in ZigBee networks. However, the routing selection method is not included in the standard. To choose the proper routing scheme in different conditions could achieve better performance. In this article, we analyzed the performance of the original routing methods. We used OPNET modeler to...
In the Zigbee specification, both the hierarchical tree routing algorithm and the table-driven routing algorithm are available in the network. However, the routing selection method is not included in the standard. To choose the proper routing scheme in different types of networks could achieve better performance. In this article, we analyzed the effect of the node mobility in Zigbee networks. We used...
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