Orthogonal Frequency Division Multiplexing (OFDM) technology, due to the high frequency spectrum efficiency and strong anti-jamming ability, has received extensive attention, and has gradually become one of the core technology of the next generation of wireless communication system.Channel estimation is one of the key techniques in OFDM systems, and of all the channel estimation algorithms
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With the social progress and rapid development of science and technology,humen have entered the twenty-first century, the information technology and artificial intelligence technology are rapidly developing .With the continuous improvement of living standards and the increasingly rich cultural life, development of the Internet makes it more convenient for people to get access to digital media.
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In this paper, a specific design method is presented to meet the requirement of waveheight acquisition and analysis and achieving absorption making wave, which includes thedesign of capacitive wave height sensor and wave data acquisition and analysis program.Capacitive wave height sensor includes sensing element constructional drawing,derivation of formula, detailed schematic and SCM (single-chip microcomputer) program.The
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Entering the 21st century, with the steady developments of new technologies, the complexity of real-time software is growing significantly. Real-time system must support on-line upgrading, which may inevitably risk introducing new bugs, therefore it will be difficult to ensure the reliability of the system even with a wide range of integrated system level tests. Meanwhile,
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Entering the 21st century, with the steady developments of new technologies, the complexity of real-time software is growing significantly. Real-time system must support on-line upgrading, which may inevitably risk introducing new bugs, therefore it will be difficult to ensure the reliability of the system even with a wide range of integrated system level tests. Meanwhile,
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With the rapid development of internet, Q&A system has become a neccessary tool to get all kinds of knowledge and information. However, rapidly changing of information request Q&A system return accurate answers to users in time, which is important problem to be solved. Currently, Q&A systems already can find useful answers to a query by
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Nowadays, semiconductor laser technology has become more and more mature, their application in optical communication networks gradually increases, but with the new emerging technology, especially wavelength division multiplexing (WDM) optical communication technology used in wide areas. This makes people propose a higher demand for the source of optical communication.In this paper, a new type of
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With the rapid development of IP networks,3G networks and LTE, digital video communications has become an important area, and video services will become the support of the communications business. In the development process of video business, monitoring just on video protocol and video transmission has been unable to meet the requirements for video quality, and
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As a new subject presented in 1980′s, the iterative learning control (ILC), with a great foreground in the control for the industry robot, numerical machine and other plants with repetition property, is feasible in dealing with the nonlinear systems, and un-modeling systems and so on. Certainly, as a new science branch, there are still many
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The mechanical fine process and the detecting technique are the advanced manufacture technology developed by national medium and long-term science and technology development and the Eleventh five-plan outline. An important application situation of precise metallic foils rolling thickness in 1 μm~100μm is preparation of Inertial Confinement Fusion (ICF) target materials. As the high added value
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