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UWB (Ultra Wide Band) technology is a reliable transmission scheme for wireless communication with high data rates. It is called as impulse radio, impulse radar or carrier free ultra high resolution scheme. UWB is defined as signals with fractional band width more than 20% of its central frequency or as signals with bandwidth more than 500 MHZ. UWB can be characterized with ultra-short duration pulses...
In todaypsilas life, the importance of accessing data and information from Internet and other networks for business, entertainment, and social activity applications is ever increasing. Network protocols such as Wi-Fi (802.11) and WiMAX (802.16) have been developed for such applications. However the need for a high-speed, highly reliable and high quality access to these information services under fully...
With the development of wireless and mobile Internet technology, people in everyday life and business hope for access to the Internet even while they are in movement. IEEE 802.20 technology is mobile and can effectively address high-speed network access. In this paper the PHY layer model for simulating 802.20 in SIMULINK and subsystems in MATLAB S-function files are presented. To evaluate the performance...
This paper focuses on ideal operation status of the parallel inverter system. The limitation of conventional conclusion about ideal operation status of parallel inverters is discovered. And a new conclusion is introduced, that there will be no circulating current among parallel inverters when their unattached output voltages have the same frequency, phase, amplitude and be uniformly modulated. Simulation...
The following topics are dealt with: power system management; power system control; information networking; process monitoring; process control; system identification; modelling; simulation; coding; modulation; evolutionary computation; video-based security surveillance; image processing; signal processing; object recognition; object retrieval; control system design; computer networking; fuzzy systems;...
This paper presents a comparison of different resonant inverter topologies. Through simulation the characteristics of an active clamped resonant DC link inverter, an auxiliary resonant commutated pole inverter and an auxiliary quasi resonant DC link inverter are compared. Different modulation and control strategies are taken into consideration. The influence of the circuit and the control strategy...
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