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 8 of 8 for “"AM-AM"”.
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ΜΕΛΕΤΗ ΚΑΙ ΥΠΟΛΟΓΙΣΜΟΣ ΤΗΣ ΕΠΙΘΥΜΗΤΗΣ ΠΡΟΠΑΡΑΜΟΡΦΩΣΗΣ ΓΙΑ ΤΗΝ ΔΙΟΡΘΩΣΗ ΤΗΣ ΕΙΣΑΓΟΜΕΝΗΣ ΠΑΡΑΜΟΡΦΩΣΗΣ ΣΕ ΜΗ ΓΡΑΜΜΙΚΟΥΣ ΠΟΛΥΕΠΙΠΕΔΟΥΣ ΨΗΦΙ...
… USING M-ARY DIGITAL SCHEMES SUCH AS M-ARY QAM [1.4]. IN FACT M- ARYQAM SCHEMES PRESENT MUCH BETTER POWER/BANDWIDT EFFICIENCY THAN THE EQUIVALENT M-ARY PSK IN AWGN ENVIRONMENT. MOREOVER, COCHANNEL IMMUNITY OF M-ARY QAM IS SUPERIOR TO THAT OF M-ARY PSK BUT IN THE CONTRAST THEY ARE ESPECIALLY …
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Charakterisierung von Leistungsverstärkern für die Entwicklung neuer und einfacher Vorverzerrungssysteme
… Vorverzerrungssystems und zum Anderen konnten damit Zusammenhänge erkannt werden, aus denen ein neues Vorverzerrungssystem zur Kompensation von Betriebsbedingungsschwankungen entwickelt wurde. Diese Aspekte sind in mobilen Geräten von entscheidender Bedeutung, weil nur sehr einfache Systeme …
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Adaptive Digital Predistortion with Applications for LMDS Systems
… A background on LMDS link design, non-linear amplification, and predistortion is presented to assist the reader. A developed simulation uses AM-AM and AM-PM characteristics obtained from laboratory measurements of a 28 GHz amplifier to determine the effect of several predistortion …
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Vocal modulation features in the prediction of major depressive disorder severity
… (MDD). Two model components contribute to amplitude modulation (AM): AM from respiratory muscles and from interaction between formants and frequency modulation in the fundamental frequency harmonics. Based on the modulation model, we test three methods to extract the envelope of the third …
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Fornaldar- og riddarasagnasafnið AM 343 a 4to: Rannsókn á skrift og gerð 15. aldar handrits
15. aldar handritið AM AM 343 a 4to er talið skrifað á Möðruvöllum fram í Eyjafirði. Þetta er þykkt handrit sem inniheldur fornaldar- og riddarasögur. Í þessari ritgerð er gerð og ástandi handritsins lýst eins og það er nú. Það virðist skrifað sem ein heild og þó að bókfellið sé ekki af hæsta …
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Diode Predistortion Linearization for Power Amplifier RFICs in Digital Radios
… device in a radio system is the power amplifier (PA). PA inefficiency requires increased battery reserves to supply the necessary DC bias current, resulting in larger devices. Alternatively, the length of time between battery charges is reduced for a given battery size, reducing …
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Industrialisation of Additive Manufacturing ¿ A Holistic approach: From design to production
L'abstract è presente nell'allegato / the abstract is in the attachment
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Digitally enhanced CMOS RF transmitter with integrated power amplifier
… with integrated 23 dBm, Class-B power amplifier (PA) is fabricated in a 0.13 μm CMOS process. The TX chip is packaged using a low-cost chip-on-board (COB) technique. When 20-MHz bandwidth OFDM signals are transmitted, a high TX average power efficiency is achieved exploiting the dynamic …