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Aiming at the shortages of positioning technology in Wireless Sensor Networks (WSNs), a fuzzy positioning algorithm based on WSNs is proposed. Line segments connecting anchor nodes intersect and the algorithm regards intersection points as sample points which should assist with the positioning and improve positioning precision when there are fewer anchor nodes. The positional relationship of the sample...
Aiming at working out the problem of existing load balancing algorithms that failed to consider the real time performance level of each access network sufficiently, a new load balancing algorithm is proposed in this paper. Firstly, a judgment matrix is constructed by the received signal strength, the remaining available resources and the current business blocking rate of each network. Secondly, the...
In order to improve energy efficiency in wireless sensor networks (WSNs), an unequal clustering algorithm based on virtual blocks (VBUC) is proposed. Firstly, the monitoring area is divided into several virtual blocks (VBs) in VBUC. According to the principle of energy minimization, the optimal number of cluster heads (CHs) is calculated to control the number and the size of the VB. Secondly, the...
In the process of signal acquisition for satellite navigation receiver, compare to the non-coherent acquisition algorithm, the differential correlation based acquisition algorithm is better for improving SNR. Due to the high bit rate of navigation message on P-code, traditional differentially coherent integration algorithm can't be used, a new method called bit-synchronization-based differentially...
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