Monday, April 19, 2010

the method to compute the frequency

Then the demodulation for signals that demodulated by frequency was achieved successfully. During the realization of ITU measurement, the method to calculate signals’modulation depth from signal envelope, which was computed by software, was exposed, the method to compute the frequency deviation using the instantaneous frequency, which was demodulated in lace wedding dresses demodulation process, was exposed too.Besides the cheap evening dresses realization of demodulation, the paper analyses the performance of anti-frequency offset custom made prom dresses and anti- phase offset characteristics of the baseband demodulation. Also, the application scope of various demodulation methods was analyzed. Meanwhile, many methods to measure the blog lace wedding dresses signal characteristics were implemented. The application scopes of the methods were also studied. In the process of spectrum analysis, various methods were adopted and the wedding gowns dresses results were compared. The measured results of the baseband demodulation, ITU measurement and spectrum analysis are accords with the real signals’character tics. The functions in the paper performance good. It’s proved that they can be part functions of digital radio receiver. The system described in this paper meets the original requirements.
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