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The purpose is testing the distribution of trace elements rapidly in apples by laser-induced breakdown spectroscopy. Used the 1064 nm and Q ns Nd:YAG laser to be the light source, high precision spectrometer collected spectrum. Layered the sample to four different part for experiments. Analysing spectrum of LIBS, obtained the characteristics spectrum of each elements. Research the time evolution and...
The subthreshold circuit is a promising ultra-low-power solution for such applications that don't require high speed but are extremely power-stringent. The characteristic of the current under subthreshold voltage is different from the normal domain. A delay model is essential to predict the performance, analyze the variation impacts and optimize the design. This paper proposes a fast computable delay...
There are lots of devices with different power in the network. This phenomenon may be nothing in the wired network, but in the wireless network that would be a serious problem. Most of the traditional routing protocols assume that the link is symmetric. We found that heterogeneity network performance will be severely affected. We give new routing protocol that employs adaptive technique to the MANET...
The congestion control scheme plays a critical role in the multicast communication. Without a proper congestion control mechanism, multicast protocols would cause unfairness while sharing network bandwidth with other flows. We propose a deliberated congestion control scheme to multicast multimedia contents for smart phones retrieving effectively. Our key idea is to detect the single trip time of packet...
It has been widely recognized that the multipath routing can be fundamentally more efficient than the traditional approach of routing along single path. A self-adaptive traffic splitting algorithm, called Dynamic Weighted Round-Robin (DWRR), has been developed to distribute traffic fairly in term of the weight so as to obtain good performance of network load balance. In addition, DWRR can get lower...
The mobility has been shown to be beneficial to improve the performance of wireless sensor networks. In this paper, a new routing scheme based on subarea mobile service is proposed. According to the number of mobile nodes in the network, the area of network is divided into multiple subareas equally. In each subarea, there is one mobile node to relay the data of static nodes. Based on Nearest Neighbor...
A fully-integrated programmable interference canceller is presented for the cognitive radio RF front-end, which is based on a double-loop cancellation technique. For a frequency division duplexing system (FDD), this interference canceller can suppress the Tx leakage and its associated noise at the Rx band. A negative delay line and a positive delay line are required for the double cancellation paths...
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