نتایج جستجو برای: receiving antenna
تعداد نتایج: 160701 فیلتر نتایج به سال:
The effect of fading and interference effects can be combated with equalizer. This paper analyses the performance of MMSE equalizer based receiver for MIMO wireless channel .The BER characteristics for the various transmitting and receiving antenna is simulated in mat lab tool box and many advantages and disadvantages the system is described. The simulation carried out signal processing lab sho...
This is a revolutionary method which overcomes many of the antenna system analysis problems associated with UWB communication. By using this method, the antenna system is analyzed from the viewpoint of antenna to antenna transfer function, which makes it possible to consider the transmitting antenna and receiving antenna as a complete unit rather than individual element. The refined formulation...
This paper presents a design for a transmitting antenna array comprised of mobile antenna elements, where the Global Positioning System (GPS) is used to estimate the current location and velocity of those elements. GPS is also used to synchronize the clocks carried by the mobiles. With this information, a central algorithm can control the phase of the radio signal radiated from each element so ...
This paper presents an analysis of the channel capacity for 2×2 multiple input multiple output (MIMO) antenna systems. In this research, channel capacity is simultaneously analyzed by arbitrary transmitting (Tx) and receiving (Rx) antenna correlation matrix with correlated fading channel matrix. The channel capacity for 2×2 MIMO system is calculated. Considered parameters include receiving sign...
We investigate the use of multiple transmitting and or receiving antennas for single user communications over the additive Gaussian channel with and without fading We derive formulas for the capacities and error exponents of such channels and describe computational procedures to evaluate such for mulas We show that the potential gains of such multi antenna systems over single antenna systems is...
In this paper, circuital and numerical models of metal enclosure with apertures are considered for the purpose of accurate shielding effectiveness calculation. An improved circuital model is presented to account for the presence of receiving dipole antenna which is often used in practice to measure the level of electromagnetic field at selected points inside the enclosure. Receiving antenna of ...
Abstract—Digital beamforming (DBF) on receive in elevation with a large receiving antenna will be widely adopted in future spaceborne synthetic aperture radar (SAR) missions to improve system performances. Furthermore, DBF can be used to separate echoes corresponding to different sub-pulses in some novel spaceborne SAR imaging modes. This paper proposes an improved DBF processor with a large re...
he investigation carried out in this paper was stimulated by a T . recent paper published by Love, in which the appropriateness of the use of the ThCvenin and Norton equivalent circuits for a receiving antenna WdS questioned [I]. A review of the available literature led to the conclusion that the limitations inherent in the Thevenin and Norton equivalent circuits had not been adequately examine...
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