A method is disclosed for the reduction of the peak-to-average power ratio of a multicarrier signal. The method comprises the following steps: (a) detecting locations at which the amplitude of the signal is above a predetermined value; (b) applying a non-linear process, so that the amplitu...
US20040239415 * 2004年5月26日 2004年12月2日 Bishop Christopher Brent Methods of predicting power spectral density of a modulated signal and of a multi-h continuous phase modulated signalUS20040239415 May 26, 2004 Dec 2, 2004 Bishop Christopher Brent Methods of predicting power spectral density of...
A peak reading (CW) or quasi-peak (modulated) is used. The equipment is rotated and the test antenna height is varied between 1 and 4 m to find the maximum level, which is noted. The signal strength survey is conducted for both vertical and horizontal polarization. In the second stage,...
The PQD signal is fed into the TFE module to extract temporal features, and the first requires normalization of the raw data. In this paper, min-max normalization is used to map the perturbed signal x to between [0,1]. The formula is Eq. (4). $$\begin{aligned} x^{*}=\frac{x-...
The winner HPA will be the one revealing the highest average efficiency with the modulated signal. Click here to download an overview of the Linear High Power Amplifier Design Competition. Registration Deadline March 27, 2020 Competition June 23, 2020 Award Declaration June 25,...
Machine, or transformer, thermal relay is a device which functions when the temperature of an AC machine armature, or of the armature or other load carrying winding or element of a DC machine or converter or power rectifier or power transformer (including a power rectifier transformer) exceeds ...
Figure 1a illustrates a schematic diagram of the human eye, it can convert light signals into neural signal. Further storage and processing take place in the human brain. Inspired by this, we designed a phototransistor using SWCNTs/ZnTPP as the active material to mimic the functions of the ...
phase, or both as a function of the parameter being measured. The signal may be amplified and filtered before being modulated back down to dc by the phase-sensitive detector (PSD). An output filter (OF) limits the bandwidth of the signal to the frequency range of the parameter being measur...
SA Hamed,M Shaderma - 《International Journal of Electronics》 被引量: 2发表: 1993年 Pulse-Width Modulated DC-DC Power Converters (Kazimierczuk/Pulse-Width) || Small-Signal Models of PWM Converters for CCM and DCM The increasing availability of controlled on-and-off power switching devices en...
In this paper, continuous phase modulation (CPM) is discussed as a means of digital modulation which uses continual phase transitions between the transmitted symbols as a memory. In calculating the power spectrum, the influences of the memory and of the signal forms used for information transmission...