[PDF] Top 20 Modeling and digital predistortion of wireless radio frequency transmitters

... clock frequency limit imposes a severe bandwidth restriction which in turn limits the amount of distortion the digital compensator can inject in the signal [26, ...description and compensation ... See full document

... Recentemente, as tecnologias sem fio estão progredindo rapidamente de modo que o futuro da comunicação digital será dominado por uma rede sem fio densa, ubíqua e heterogênea. Adicionado a isso, existe uma demanda ... See full document

... [7] and have been proposed as an alternative for the traditional transmission chains [8, ...capacity of FPGAs, ADTs have become an hot topic [10–16] and many improvements have been made in order to ... See full document

... interference of the human body in radio communications in a ZigBee-based WBAN were also accounted ...weight, and water content. Other sources of interference such as nearby WBANs, networks ... See full document

... increase of the “adaptable system” concept, exemplified by the herein studied modulation ...advantages of operating the PA on higher saturation ...carrier frequency adaptable potential of ... See full document

... transfer and throughput are re- quired. Thus, in order to attain a best use of the frequency spectrum, strict wireless standards must be ...duration of mobile devices. Hence, the ... See full document

... digitalization of the radio system, which poses an important step towards the complete software description of RF signals proposed in ...RF transmitters include the development of novel ... See full document

... implementation of 5G RAT relies on three main key approaches: Migrating the communication to higher frequencies, using MIMO transmitters and a density increase of radio resources, ... See full document

... the digital domain. Currently, SDR transmitters are usually implemented recurring to commercial high speed RF DACs [9], however all-digital transmitters (ADTs) based on pulsed converters [10] ... See full document

... envelope of the high PAPR signal after being rectified , maximum ripple value depends both on tone separation and on the output filter of the RF-DC converter ...Bank of matched ... See full document

... the modeling and planning of RFID net- work has drawn extensive attention, few studies have considered several objectives under uncertainties about decision-making for the RNP ...deployment of ... See full document

... distance of the receiver to the emitter i, given a signal strength of ...value of  , and the signal strength read by the receiver may contain oscillations, one can assume that the receiver is ... See full document

... capacity and scalability increase, wavelength division multiple access (WDMA) techniques can also be ...channel and another single downstream wavelength ...capacity of the OLT, the average capacity ... See full document

... comunicação wireless Zigbee, tendo a devida importância, pelo seu uso em diversas aplicações, tanto em perfil doméstico quanto industrial, devido à sua simplicidade e custo ...comunicação wireless ZigBee se ... See full document

... ones of the least invasive methods, because fish are not required to be handled or ...color and fish behavior can be observed directly by researcher’s eye or with the aid of video cameras, or ... See full document

... technique of patch antenna is proposed and experimentally ...resonant frequency of the proposed antenna is significantly lowered compared to designed frequency, leads to size reduction ... See full document

... A radio-frequency (RF) inductive ion source at ...model of the argon discharge, plasma density, electron temperature and ion current density of the ion source is calcu- lated in ... See full document

... perse and monodisperse particles depending to the geo- metric ...law of the Gaussian distribution. At small values of disper- sion some properties of particles are ...methods of ... See full document

... Low Frequency (LF) na RFID permite uma leitura até 50 cm de distância e possui uma baixa velocidade de transferência de leitura, utilizando frequências entre os 100 e os 500 ... See full document

... Much of the statistical literature in image segmentation has used Markov random field models, not for shape variables, but for the “true” image underlying the observed gray value ...description of textures, ... See full document