نتایج جستجو برای: continuous phase modulation
تعداد نتایج: 973482 فیلتر نتایج به سال:
after designing and constructing a coalescence cell, drop/interface coalescence phenomenon was studied in the absence and presence of single surfactant.two surface active agents of sodium dodecyl sulfate and 1-decanol were used. distilled water was used as dispersed phase. toluene, n-heptane and aqueous 60% (v/v) of glycerol were selected as continuous phases, separately. it was found that the ...
In this paper, we applied Continuous Phase Frequency Shift Keying (CPFSK) to Trellis Coded Quantization/Modulation (TCQ/TCM) and thus we called Trellis Coded Quantization/ Continuous Phase Modulation (TCQ/TCCPM) for this new system. In this new scheme we use continuous phase frequency shift keying signal set instead of phase shift keying signal set. As an example, an eight state TCQ/TCCPM syste...
To my parents, Chongding Zhao and Fulan Yin, and my wife, Dawei. iii ACKNOWLEDGEMENTS This thesis is dedicated to my parents, Chongdoing Zhao and Fulan Yin, and my dear wife, Dawei, for their patience and love through all these years. My parents did their best since my childhood to provide me the best educational opportunities. They have been a source of incessant support and encouragement in m...
Continuous phase modulation (CPM) schemes are generally used in peak-power limited transmission systems such as digital satellite communications. Their major drawback, however, is a prohibitively complex receiver structure, particularly in modulation schemes with high packing densities. In this paper we propose feed-forward neural nets (NN) as receivers for partial response CPM systems. Our app...
In recent years, there has been a vast amount of research on cooperative diversity due to its potential capacity increase. Almost all of the research has been based on linear modulation formats such as phase-shift keying (PSK) or quadrature amplitude modulation (QAM). On the other hand, continuous phase modulation (CPM) promises impressive advantages relative to linear modulations for wireless ...
In this paper, we study the performance of the Digital Video BroadcastingTerrestrial (DVB-T) system with Continuous Phase Modulation Orthogonal Frequency Division Multiplexing (CPM-OFDM). The proposed structure combines the advantage of mitigating the Peak-to-Average Power Ratio (PAPR) problem in the Power Amplifier (PA)in addition to exploiting the channel frequency diversity and power efficie...
| The combination of continuous phase modulation (CPM) with direct-sequence code-division multiple access (DS-CDMA) for multiuser transmission over the additive white Gaussian noise channel is discussed. Concentrating on the important special case of generalized minimum-shift keying, particularly simple receiver structures are obtained. To emphasize on low complexity, noncoherent reception is p...
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