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To reduce slope overload distortion ,the step size must be increased when the slope of the input signal is high.
The sawtooth is better able to
match the message in the regions of steep slope.
Wiki User
∙ 10y ago
Wiki User
∙ 13y agoSlope overload occurs when the slope of the input signal is greater than the slope of the output. slope overload can be avoided by increasing the step size or the sampling frequency.
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What are the disadvantages of delta modulation?
1. The bandwidth for transmission of PAM signalis very very large compared to its maximum frequency content. 2. The Amplitude of PAM Pulses varies accordingly to modulated signal. Therefore interference of noise is maximum for the PAM signal and this noise cannot be removed very easily. 3. Since amplitude of PAM signal varies, this also varies the peak power required by the transmitter with modulating signal.
What is Slope overload distortion?
Slope overload distorsion - is caused by use of step size delta which is too small to follow portions of waveform that has a steep slope. Can be reduced by increasing the step size. Granular noise - is caused by too large step size in signal parts with small slope. It can be reduced by decreasing the step size.
Explain the origin of finite output resistance of MOSFET devices?
let the mosfet be biased in saturation regior. thus drain current in independent of drain to sourse voltage, the VI chara. is a curve, when this is extended till X axis at pt. Vds=-Va this is similar to effect in transistor the o/p resistance is slope of V-I chara.. it should ideally be infinite, but has some finite value due to "CHANNEL LENGTH MODULATION"
What does the slope of voltage-current curve represent?
It depends. If voltage is drawn along the horizontal axis, then the slope at any point on the graph represents the reciprocal of resistance at that point. If current is drawn along the horizontal axis, then the slope at any point on the graph represents the resistance at that point.
Is it possible that an amplifier without feedback may oscillate at high frequency?
it all depends on its open loop gain or crossing the zero db point at slope less the -1db
What are the disadvantages of delta?
The disadvantages of delta modulation are slope overload distortion and granular noise.
What are Advantages of delta modulation?
The delta modulation transmits only one bit for one sample. Thus the signaling rate and transmission channel bandwidth is quite small for delta modulation. The transmitter and receiver implementation is very much simple for delta modulation. There is no analog to digital converter involved in delta modulation. The disadvantages of delta modulation are slope overload distortion and granular noise. These are the two drawbacks of delta modulation.
What is slope overload error in delta modulation derive an expression for it?
: If the input signal amplitude changes fast, the step by-step accumulation process may not catch up with the rate of change of the signal this is called slope overload error
What are Disadvantages of Adaptive delta modulation?
There are two major disadvantages of delta modulation: 1. Slope overload distortion: occurs when modulating signal varies faster than counter recovered signal. 2. Granular noise: occurs when variation in modulating signal is smaller than step size.
Compare pulse code modulation and delta modulation?
delta modulation refers to the procedure of encoding and thereby transmitting only the difference between consecutive samples instead of sending each of the samples themselves. This method is useful only when the vaiation in the amplitude of the signal is small, otherwise, it leads to a phenomenon called "slope overload".Pulse code modulation is the procedure where each of the levels of an analog signal is assigned a value closest ro a quantizer level used to quantize the signal...Another method of PCM that can be confused with Delta Modulation is the D(ifferential)PCM. Here, the difference between the signals is encoded based on its magnitude..
What are the disadvantages of delta modulation?
1. The bandwidth for transmission of PAM signalis very very large compared to its maximum frequency content. 2. The Amplitude of PAM Pulses varies accordingly to modulated signal. Therefore interference of noise is maximum for the PAM signal and this noise cannot be removed very easily. 3. Since amplitude of PAM signal varies, this also varies the peak power required by the transmitter with modulating signal.
What is Slope overload distortion?
Slope overload distorsion - is caused by use of step size delta which is too small to follow portions of waveform that has a steep slope. Can be reduced by increasing the step size. Granular noise - is caused by too large step size in signal parts with small slope. It can be reduced by decreasing the step size.
What kind of line has a slope of 0?
A horizontal line, such as Y = 3, has a slope of zero.Slope is the limit, as delta x approaches zero, of delta y / delta x.
Advantages of amplitude modulation?
SBSC and DSBRC signals need their carrier to be regenerated (by a beat frequency oscillator, for instance) to be demodulated using conventional techniques. Even greater efficiency is achieved—at the expense of increased transmitter and receiver complexity—by completely suppressing both the carrier and one of the sidebands. This is single-sideband modulation, widely used in amateur radio due to its efficient use of both power and bandwidth.A simple form of AM often used for digital communications is on-off keying, a type of amplitude-shift keying by which binary data is represented as the presence or absence of a carrier wave. This is commonly used at radio frequencies to transmit Morse code, referred to as continuou
What is the slope of a line that does not intersect the y axis?
The slope of such a line is undefined: If you divide delta y / delta x for any two points, you get a division by zero.
What is the formula for slope in geometry?
slope = (delta y) / (delta x). That's shorthand for: slope = (difference in the y-coordinates) / (difference in the x-coordinates). For two given points with coordinates (x1, y1) and (x2, y2), the slope is (y1 - y2) / (x1 - x2).
How do you differentiate and find the tangent?
When you differentiate a function, you find the slope of the function. The slope is also known as the tangent. The slope of a line, given one point, and a second point relative to the first point, but with x different, is given as delta y over delta x. Differentiation is simply taking the limit of the slope, i.e. where delta x approaches zero.
