The downlink capacity of a UMTS Terrestrial Radio Access Network (UTRAN) sharing the frequency spectrum with a terrestrial digital video broadcasting (DVB-T) network is investigated in this paper. For the DVB-T network, rooftop and portable outdoor reception is considered, for both, Multi Frequency Networks and regional Single Frequency Networks. The necessity to limit the interference between ...

Abstract Background Ventricular-arterial coupling (VAC) can be evaluated as the ratio between arterial stiffness (pulse wave velocity, PWV) and myocardial deformation (global longitudinal strain, GLS). Objectives To evaluate VAC across spectrum of heart failure (HF). Methods We introduced a Doppler-derived, single-beat technique to estimate aortic arch PWV (aa-PWV) in addition tonometry-derived...

1 Electronics and Telecommunication, Pune University Cognitive Radio technology helps in designing wireless system for efficient deployment of radio spectrum with its sensing technique,self adaptation and spectrum sharing. Spectrum sharing is an effective method of alleviating the scarcity of radio spectrum problem by allowing unlicensed users (secondary users) to coexist with licensed users (p...

Background:Several studies have reported the toxicological implications of inhalation of petroleum hydrocarbon fumes in animal models. But, there is certainly little or no documentation of the exposure to petroleum hydrocarbon fuel on oxidative stress levels in humans, unlike the pulmonary physiology. The present study was carried out to evaluate the effects of constituents of the hydrocarbon f...

V Because of th nation's increasing demand for sore *<>lecommunication capacity, there is a continuing r.e^-i for nor* efficient ways of sharing ehe radio spectrum. Th-3 ccr.ver.tior.ai ways o* allocating the soeC-rum are by frequency, space ar.d time division. However, for systems using new technology this is inefficient. Hence, it is desirable to re-examine alternative procedures that might b...

Cognitive Radio technology helps in designing wireless system for efficient deployment of radio spectrum with its sensing technique, self-adaptation and spectrum sharing. Spectrum sharing is an effective method of alleviating the scarcity of radio spectrum problem by allowing unlicensed users(secondary users) to coexist with licensed users (primary users) under the condition of protecting the l...

In this presented work, the problem of selecting the number of antennas for a spread spectrum multipleinput multiple-output (MIMO) cellular system is investigated, in order to maximize the Shannon’s channel capacity (estimated in average sense) assigned to each system’s user when operating in a Rayleigh fading environment. Then, the spectral efficiency is estimated in terms of the achievable av...

The large expected increase in the capacity requirements raises not only technical issues but also regulatory and business challenges. One of the key methods to increase the capacity of mobile networks in a cost efficient way is to find additional frequency spectrum. However, it is a difficult task since most of the spectrum is already allocated in long-term basis. Therefore, innovation in the ...