نتایج جستجو برای: fading window
تعداد نتایج: 82238 فیلتر نتایج به سال:
Abstract The brain capitalizes on the complexity of both its biochemistry for neurons to encode diverse pieces information with various neurotransmitters and morphology at multiple scales route different pathways neural interconnectivity. Conducting polymer dendrites can show similar features by differentiating between cations anions thanks their charge accumulation profile asymmetry in dendrit...
Objective(s): The energy resolution of a cadmium-zinc-telluride (CZT) solid-state semiconductor detector is about 5%, and is superior to the resolution of the conventional Anger type detector which is 10%. Also, the window width of the high-energy part and of the low-energy part of a photo peak window can be changed separately. In this study, we used a semiconductor detector and examined the ef...
Coded modulation (usually with interleaving) is used in fading channel cornmunications to achieve good error performance. The major benefit froin using coded modulation in fading channels is achieved if each code symbol of a codeword (or coded sequence) suffers statistically different fading (preferably independent fading). However, in many applications of mobile communications (e.g. in a metro...
Fixational eye movements (FEMs; including microsaccades, drift and tremor) are thought to improve visibility during fixation by thwarting neural adaptation to unchanging stimuli, but how the different FEM types influence this process is a matter of debate. Attempts to answer this question have been hampered by the failure to distinguish between the prevention of fading (where fading is blocked ...
In broadband wireless communication, the adaptive antenna array (AAA) is combined with orthogonal frequency division multiplexing (OFDM) to combat the inter-symbol interference (ISI) and the directional interferences. One of the two main techniques which are used in OFDM systems is called Pre-FFT, where an optimum beamformer weight set is obtained in time domain before Fast Fourier Transform (P...
|Quality of video transmitted over time-varying wireless channels relies heavily on the coordinated e ort to cope with both channel and source variations dynamically. Given the priority of each source packet and the estimated channel condition, an adaptive protection scheme based on joint source-channel criteria is investigated via proactive forward error correction (FEC). With proactive FEC in...
Packet loss in IP networks can be congestive due to IP interrupt queue overflow on the nodes, and non-congestive due to hardware failure, signal-fading or obstacles. Recognition of two types of losses can largely help TCP endpoints in making right decisions. In this paper we apply the Visualized IP-based Network Simulator (VINS) to characterize the key differences between congestive packet loss...
The performance of wireless MIMO systems is known to suffer significantly from fading correlation between the antenna elements in a poor scattering environment if the transmitter is non-adaptive. However, acquiring accurate short-term channel state information to control TX adaptivity can be a serious problem, in particular in FDD systems. Thus, we are proposing statistical linear transmit pref...
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