Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 5 of 5 for “"Automatic frequency control"”.
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2GHz W-CDMA Radio Transceiver
… transmitter in conjunction with transmit power control (TPC), two independent receivers in conjunction with automatic gain control (AGC) and automatic frequency control (AFC), and one common synthesizer. Data exchange between the radio and the baseband processor takes place in an 8-bit digital …
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Efficient narrow-band speech transmission over land mobile channels.
… instead of the 20-30kHz currently used in analog frequency modulation (FM).Three main subsystems, required by theconcept, are proposed. A novel differential dynamic speech companding system improves the signal to noise ratio of the low volume syllables, and, therefore, improves the speech quality. …
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Analysis and design of a high frequency induction-heating system
… semiconductor technology are making high frequency converters for induction heating more feasible at power levels up to 50kW. This research presents the development and analysis of a solid-state induction-heating system, operating directly off single-phase mains frequency, which enables …
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Improving inter-area oscillations damping of power systems through cooperative active power control of distributed energy resources
… has the potential to pronounce the effect of frequency disturbances such as inter-area oscillations. These low-frequency disturbances reduce transmission lines capacity, and at worst even damage the power grid infrastructures. In this paper, we propose a novel control algorithm to eliminate …
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A comparison of digital beacon receiver frequency estimators
Two algorithms for estimating the frequency and power of the carriers of 20 GHz and 30 GHz satellite signals are compared. Both algorithms operate on a prefiltered sequence generated by lowpass filtering followed by signal decimation for the purpose of sampling rate reduction. The lowpass filtering …