A system simulation environment in Matlab/Simulink of RFID is constructed in this paper. Special attention is emphasized on the analog/RF circuit.Negative effects are concerned in the system model,such as phase noise of the local oscillator,TX-RX coupling,reflection of the environment, AWGN noise,DC offset,I/Q mismatch,etc.Performance of the whole system can be evaluated by changing the coding method,parameters of building blocks,and operation distance.Finally,some simulation results are presented in this paper.
標簽： environment constructed simulation Simulink
上傳時間： 2014-01-09
上傳用戶：zhangliming420
TI 公司 三相交流電機矢量控制源程序，F24x ACI3_3 3-Phase Sensored Field Oriented Control (FOC)
上傳時間： 2013-12-20
上傳用戶：縹緲
In recent years large scientific interest has been devoted to joint data decoding and parameter estimation techniques. In this paper, iterative turbo decoding joint to channel frequency and phase estimation is proposed. The phase and frequency estimator is embedded into the structure of the turbo decoder itself, taking into consideration both turbo interleaving and puncturing. Results show that the proposed technique outperforms conventional approaches both in terms of detection capabilities and implementation complexity.
標簽： scientific parameter interest decoding
上傳時間： 2015-12-30
上傳用戶：894898248
A new cable fault location method based on wavelet reconstruction is proposed. In this method the difference between the currents of faulty phase and sound phase under the high voltage pulse excitation is used as the measured signal and is decomposed in multi-scale by wavelet transform, then reconstructed in single scale. Comparing with traditional fault location method by travelling wave, the presented method will not be interfered by the reflected wave from the branch joint of cables or from other positions where the impedances are not matched and not be influenced by fault types, otherwise, the reflected waves can be recognized even the faulty position is near to the measuring terminal, at the same time, the influence of the wave speed uncertainty can be reduced. The correctness of the proposed method is proved by simulation results.
標簽： method reconstruction location proposed
上傳時間： 2016-02-04
上傳用戶：maizezhen
A new PLL topology and a new simplified linear model are presented. The new fractional-N synthesizer presents no reference spurs and lowers the overall phase noise, thanks to the presence of a SampleJHold block. With a new simulation methodology it is possible to perform very accurate simulations, whose results match closely those obtained with the linear PLL model developed.
標簽： new fractional-N synthesizer simplified
上傳時間： 2016-04-14
上傳用戶：hjshhyy
Fast settling-time added to the already conflicting requirements of narrow channel spacing and low phase noise lead to Fractional4 divider techniques for PLL synthesizers. We analyze discrete "beat-note spurious levels from arbitrary modulus divide sequences including those from classic accumulator methods.
標簽： settling-time requirements conflicting already
上傳時間： 2016-04-14
上傳用戶：liansi
％％％ Demos for PUMA algorithms ％％％ We present four matlab demos for PUMA. demo1, demo2, demo3, and demo4 illustrate PUMA working with different parameters and with four different images. All you need to do is to run each of the demos. Please be sure that all the files are put on an accessible path for matlab. Notice that this code is intended for research purposes only. For further reference see "Phase Unwrapping via Graph Cuts, IEEE Transactions on Image Processing, 2007
標簽： demo PUMA algorithms for
上傳時間： 2016-04-23
上傳用戶：fhzm5658
無線傳感器網絡的主要功能是實現數據發布,在接收到信息查詢時能夠以有效的方式傳輸給查詢者.目前的數據發布方式通常基于洪泛機制查詢信息,浪費了有限的能源.雖然一些最近的數據發布協議從不同程度上解決了這一問題,但不能保證查詢成功率.基于圓形節點分布網絡模型提出了一種既能減少能源消耗,又能提高成功率的數據發布模式——直徑-弦模式DCS(diameter-chord scheme).該模式利用了每個圓的弦都存在一個直徑與之垂直相交的性質.在此基礎上提出了Two-Phase協議.它在信息查詢時分成兩個工作方式不同的階段進行,在第1段查詢不中時觸發第2段查找.為了減少Two-Phase的延遲,提出了基于優先級和概率轉發兩種解決方法.理論分析和實驗結果都表明,所提出的數據發布協議具有較好的性能.
上傳時間： 2016-04-29
上傳用戶：李夢晗
A major goal of this book is to show to make devices that are inherently reliable by design. While a lot of attention has been given to “quality improvement,” the majority of the emphasis has been placed on the processes that occur after the design of a product is complete. Design deficiencies are a significant problem, and can be exceedingly difficult to identify in the field. These types of quality problems can be addressed in the design phase with relatively little effort, and with far less expense than will be incurred later in the process. Unfortunately, there are many hardware designers and organizations that, for various reasons, do not understand the significance and expense of an unreliable design. The design methodology presented in this text is intended to address this problem.
標簽： inherently reliable devices design
上傳時間： 2016-07-30
上傳用戶：xiaodu1124
UML指南An important part of the Unified Modeling Language (UML) is the facilities for drawing use case diagrams. Use cases are used during the analysis phase of a project to identify and partition system functionality. They separate the system into actors and use cases.
標簽： facilities UML important the
上傳時間： 2013-12-23
上傳用戶：417313137
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