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Indoor localization is a popular topic because of the poor performance of GPS in the indoor environment. This paper has provided a new method to achieve the goal of indoor localization. Combining the usage of posture sensors with the Radio Frequency Identification (RFID) technology, we solved the problem of plentiful tags in the traditional RFID indoor localization. The relative localization subsystem...
Arbitrary interpolation filters are used to generate new sample values at arbitrary points to replace the existing discrete-time samples. This paper presents a modified polyphase interpolation filter architecture used in sampling rate conversion (SRC). Its novel implementation modification reduced the coefficients storage requirement. The flexible coefficient addressing mode could make the sampling...
Temporal scalability is a very important part in scalable video coding (SVC). The traditional MCTF (motion compensated temporal filtering) algorithm, hierarchical B-picture, low-delay hierarchical P-picture have been adopted in H.264 SVC's extension gradually. Our researching focus on low-delay hierarchical P-picture structure, the traditional low-delay hierarchical P-picture structure have some shortcoming:...
The design of a compact microwave diplexer is presented. Folded structures with coupled cavities are used to minimize its size. The sample diplexer is fabricated and the tested results show good agreement with the design target.
A compact filter with coupled shorting stubs is proposed, which also has excellent out-of-band elimination. The structure can produce transmission zeros at both sides of the pass-band of a broadband or a narrow band filter. The configuration parameters and simulated results are presented. Tested results from a sample filter show that the insertion loss is lower than 0.4 dB in the pass-band from 7...
A compact FSS (frequency selective surface) filter will be designed in this paper. The length of the filter is reduced by the use of both bandpass and bandstop FSSs. A sample filter at 8.05 GHz will be designed using CST Studio as an example. Simulation results show that the FSS filter has a bandwidth of 800 MHz and a reflection lower than -20 dB. Tested results from this sample filter agree well...
This paper presents a band-stop filters with far spurious stop bands. At first, a coaxial cavity with far spurious stop band is proposed. Then several such coaxial cavities are connected in series to form a band-stop filter. To illustrate the design process, a coaxial band-stop filter has been designed, with a stop-band centered at 5 GHz, a bandwidth of 2 GHz, and its first spurious stop-band higher...
Parameters of the fetal nuchal translucency (NT) are very important for the diagnosis and evaluation of fetuses. Currently these parameters are manually measured from the fetal ultrasound image, which may introduce problems of the variability and reproducibility. Here an automatic scheme is proposed to estimate fetal NT parameters. With a morphologic filtering, this scheme firstly establishes the...
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