SignalModulation index estimation is important in the demodulation and recognition of Angle Modulation (AM) signals which include Frequency Modulation (FM) and Phase Modulation (PM) signals. In this paper, we firstly analyzed the AM signals with baseband modulation types, such as monotone, PSK, ...
AM SignalModulation index estimation is important in the demodulation and recognition of Angle Modulation (AM) signals which include Frequency Modulation (FM) and Phase Modulation (PM) signals. In this paper, we firstly analyzed the AM signals with baseband modulation types, such as monotone, PSK,...
The meaning of MODULATION INDEX is a measure of the degree of frequency modulation expressed numerically for a pure tone modulation as the ratio of the frequency deviation to the frequency of the modulating signal.
Conventional AM Demodulation The conventional AM is inferior to DSB-AM and SSB-AM when power and SNR are considered. The reason is that a usually large part of the modulated signal power is in the carrier component that does not carry information. The role of the carrier component is to mak...
When the depth of modulation is expressed in "dB", the modulation is referred to as logarithmic AM. The spectrum of an AM signal contains several sidebands. These sidebands are created from the sum and difference of the carrier frequency and the modulation frequency. AM signals are used in ...
The fear-inhibitory and rewarding attributes of a safety signal can overlap, ultimately influencing responses to threats. For example, we previously showed that safety cues elevate the activity of dopaminergic neurons in the ventral tegmental area (VTA), a process necessary for the manifestation of ...
Recall that was defined as the second term of Eq.(4.1). The first term is simply the original unmodulated signal. Therefore, we have effectively been considering AM with a ``very large'' modulation index. In the more general case of Eq.(4.1) with given by Eq.(4.2), the magnitude of...
16、o:output SNR is proportional to the squared input SNRWeak signal suppression:The detector favors strong signals and penalizes weak signals.272.13 Noise in FM ReceiversFigure 2.40 Model of an FM receiver.Bandwidth is BT, BT 1/3, that is 0.471, FM offers improved noise performance over AM....
This modulation is mainly performed by an external electrical signal, which changes the real and/or imaginary parts of the refractive index of the particular material. The real part (n) is associated to the phase velocity and the imaginary part (α) is associated to the absorption. This ...
For ST animals, the CS itself may have incentive value, acting as a surrogate of the US. For GT rats, on the other hand, the CS is only a signal predictive of future reward delivery (Robinson and Flagel, 2009; Flagel et al, 2011). The mesolimbic dopamine system is involved in ...