نتایج جستجو برای: signal receiver
تعداد نتایج: 461056 فیلتر نتایج به سال:
Original scientific paper The wireless telecommunication system consisting of selection combining (SC) receiver which works in Gamma shadowed Weibull multiple-faded channel is discussed in this work. The received signal suffers Weibull small scale fading which leads in variation of the signal envelope and Gamma large scale fading which results in variation of the SC receiver output signal envel...
The standard RWP signal processing usually assumes, that the received voltage signal at the receiver output S(t) is the sum realization of the atmospheric scattering process I(t) and the receiver noise N(t). Both can be regarded as independent stationary Gaussian random processes. All terms are complex-valued base-band voltages that are obtained after demodulation at the receiver output. Statio...
This document describes two methods for reducing computational requirements during idle transmission in remote access systems incorporating digital subscriber line (DSL) modems, including asymmetrical DSL (ADSL) systems. These methods save processing power during idle transmission by generating an idle signal using lowcomplexity techniques. The generated idle signal is made spectrally compatibl...
A belief bias effect in syllogistic reasoning (Evans, Barston, & Pollard, 1983) is observed when subjects accept more valid than invalid arguments and more believable than unbelievable conclusions and show greater overall accuracy in judging arguments with unbelievable conclusions. The effect is measured with a contrast of contrasts, comparing the acceptance rates for valid and invalid argument...
So far the receiver performance analysis assumed ideal rectangular spectra for all of the filters in our system. This chapter analyzes the effect of non-rectangular filter shapes on the receiver sensitivity. Unlike the case of the rectangular spectra analyzed in Chapter 2, the channel seen by the signal and the noise is different now. While the signal path contains two optical filters, one used...
To increase energy efficiency of receiver-dominated nodes in IoT networks, we introduce Receiver-Sensitivity Control (RSC). RSC enables a trade-off between communication range and reception efforts. This is achieved through multiple receiver-sensitivity levels that can be adjusted at run time. The receiver operate on lower sensitivity with reduced power consumption conserve if the received sign...
This work showcases the analysis of an efficient VLC applications using error correcting turbo codes. It demonstrates how device switching, audio signal transfer and light switching is done VLC. Compared to conventional radio transfer, it quiet advantageous as visible frequency doesn’t need be licensed for certain or bandwidth. Data transmission needs secured, while reducing rates. Here, data w...
Fuzzy MIMO detector for MC-CDMA systems with carrier frequency offset over multipath fading channels
A multistage fuzzy minimum output energy (MOE) detector is proposed for multiple input multiple output (MIMO) multi-carrier code-division-multiple access (MC-CDMA) uplink systems with carrier frequency offset (CFO) over multipath fading channels. The first stage of the receiver uses a novel MIMO receiver model with offset symbols to achieve a fuzzy CFO-constrained MOE detector that suppresses m...
To assess the coherent detection of an optical signal perturbed by atmospheric turbulence, the loss in the mean signal-to-noise ratio (SNR) is usually invoked although it constitutes a limited description of the signal fluctuations. To produce statistical distributions of the SNR, we generate random optical fields. A 5/3-power law for the phase structure function is considered. The benefit of a...
By using the generalized function projective synchronization (GFPS) method, in this paper, a new scheme for secure information transmission is proposed. The Liu system is employed to encrypt the information signal. In the transmitter, the original information signal is modulated into the system parameter of the chaotic systems. In the receiver, we assume that the parameter of receiver system is...
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