We present a suite of algorithms for self-organization of wireless sensor networks, in which there is a scalably large number of mainly static nodes with highly constrained energy resources. The protocols further support slow mobility by a subset of the nodes, energy-efficient routing, and formation of ad hoc subnetworks for carrying out cooperative signal processing functions among a set of th...

The standardized configuration methods of sensors and sensor nodes were presented based on the basis of the sensor signal and data interface standardization efforts of China Standardization Working Group on Sensor Networks (WGSN). The self-descriptive digital communication sensors that can be configured by the sensor nodes were designed and developed. And the sensor nodes could automatically id...

Key to successfully deal with complex contemporary datasets is the development of tractable models that account for irregular structure information at hand. This paper provides a comprehensive and unifying view several sampling, reconstruction, recovery problems signals defined on domains can be accurately represented by graph. The workhorse assumption (partially) observed modeled as output gra...

The evolution of digital communications has resulted in new services that require from secure and robust connections. Nowadays, a signal must be transmitted to distant nodes, the quality deteriorates as distance between endpoints increases. Regenerators are special components able restore signal, order increase can travel without losing quality. These very expensive deploy maintain and, for thi...

The utilizing of received signal strength indication (RSSI) in wireless sensor network (WSN) is a distance measurement method to compute the location of nodes, which needn’t additional hardware equipment. However, large errors of measurement may cause by the disturbance of environmental noise and inherent factors of hardware. Through analyzing the location information of anchor nodes and adapti...

In analyzing a signal, especially a non-stationary signal, it is often necessary the desired signal to be segmented into small epochs. Segmentation can be performed by splitting the signal at time instances where signal amplitude or frequency change. In this paper, the signal is initially decomposed into signals with different frequency bands using wavelet transform. Then, fractal dimension of ...

the imaging assessment of nodal disease can be challenging for the radiologist because there are multiple sites to review and differing opinions about criteria for abnormal nodes. the ability to accurately detect nodal metastases is improved with knowledge of the criteria for abnormal nodes, the nodal drainage patterns, and common imaging pitfalls. in this article, we introduce these basic conc...

The design of accurate localization algorithms in the realization of wireless sensor networks is a challenging task. Localization in wireless sensor networks is becoming more important, because many applications need to locate the source of incoming measurement as precise as possible. In this paper the localization system estimates the distance between sensor nodes by measuring the RSSI (receiv...