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What do you think is a carrier's maximum modulation index without over-modulation?
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What is modulation why do we need modulation?
Sometimes we have to send low frequency information, like the tone of the voice of someone talking on a telephone, over a specific channel that only permits a specific high frequency, such as radio frequencies (RF). So how do we do that? One simple, cost effective, and bandwidth efficient method is to change, or modulate, a known RF signal a certain way. Some common ways of modulating such a high frequency signal are Amplitude Modulation and Frequency Modulation. Each of these modulation techniques has its own advantages and disadvantages and are therefore more useful in certain applications.
What kind of diseases are the most common genetic diseases For example those in which both parents may be carriers of the disease without knowing it because they don't actually have the disease?
What kind of diseases are the most common genetic diseases? (For example, those in which both parents may be carriers of the disease without knowing it because they don't actually have the disease.)
Write a flowchart to find the sum of maximum and minimum o N natural numbers without using arrays?
huh?
Limitation of operating condition in p-n junction?
the p-n junction diode will perform satisfactorily only if it is operated within certain limiting values or conditions.The are :- 1. Maximum forward current : it is the highest instantaneous current under forward bias. 2.Peak inverse voltage: 3.maximum power rating:it is the maximum power that can be dissipated at the junction without damaging it.
What is the application of pulse amplitude modulation?
Communications - The amplitude of a carrier wave is modulated by a data signal and transmitted, for example by radio wave. At the receiving end it is possible to demodulate the signal if the orignal carrier wave is known and retrieve the data signal
Why modualtion is need?
Without modulation, there's be no way to get any information onto a carrier signal. There are several different types of modulation schemes for radio carriers and almost as many different types demodulators to decode the information so that it can be converted into a usable form. For instance, AM (amplitude modulation), FM (frequency modulation), digital modulation, quadrature amplitude, etc.
Why is it desirable to have the modulation index of an AM signal as large as possible without overmodulating?
It uses the maximum power available to the transmitter and makes the signal more readable at a greater distance.
What is the highest modulation coefficient and percent modulation possible with a conventional AM system without causing excessive distortion?
the highest modulation coefficient is one (1) and percent modulation is 100
What do you mean by pulse width modulation?
pulse width modulation is nothing but changing on and off time period of a waveform without changing its frequency
What positive modulation?
Enhancing the action of an agonist without having an individual effect itself.
Why wont carriers let the blackberry 9900 be active without internet?
Forced data plans are so the carriers can make money.
What is the Digital modulation?
There are 3 main types of digital pulse modulation:Pulse time modulation (PTM), somewhat similar to analog phase modulation.Pulse width modulation (PWM), the width of the pulse represents the signal.Pulse code modulation (PCM), serial transmission of binary bits forming numeric or character codes that represent the signal.All of these can be modulated on an RF carrier using any of the standard modulation techniques: AM, FM, Phase Modulation, etc. One advantage with AM digital pulse modulation techniques over AM analog is that the carrier can be 100% modulated, which cannot be done with analog, thereby allowing significant reductions in transmitter power without loss of coverage range. Sometimes FM digital pulse modulation techniques are referred to as Frequency Shift Keying (FSK). A very complex method of combining Phase Modulation and AM to increase the bit density of digital pulse modulation on an RF carrier is called Quadrature Amplitude Modulation (QAM).
What is the digital pulse modulation?
There are 3 main types of digital pulse modulation:Pulse time modulation (PTM), somewhat similar to analog phase modulation.Pulse width modulation (PWM), the width of the pulse represents the signal.Pulse code modulation (PCM), serial transmission of binary bits forming numeric or character codes that represent the signal.All of these can be modulated on an RF carrier using any of the standard modulation techniques: AM, FM, Phase Modulation, etc. One advantage with AM digital pulse modulation techniques over AM analog is that the carrier can be 100% modulated, which cannot be done with analog, thereby allowing significant reductions in transmitter power without loss of coverage range. Sometimes FM digital pulse modulation techniques are referred to as Frequency Shift Keying (FSK). A very complex method of combining Phase Modulation and AM to increase the bit density of digital pulse modulation on an RF carrier is called Quadrature Amplitude Modulation (QAM).
Why is a huge power required for transmission without modulation?
The question is troubling, and the "fact" it appears to assume is unclear. -- The power level used for transmission without modulation is irrelevant, since the transmission without modulation has no application or purpose other than scientific experiment, and it makes no difference how far away it can or can't be heard. -- Modulated in the form of intermittent CW (as in Morse code, pulse-width modulation etc.), the instantaneous power level doesn't change, but its duty- cycle changes, as it's turned on and off as a means of conveying information. -- When amplitude modulated (AM), the power level of the carrier is constant, the power of the AM modulation stages is added to the transmission, and goes into creating the sidebands. -- When frequency- or phase-modulated, the total power is constant, but fractions of the carrier power are constantly being shifted into the sidebands. Regardless of the power used with or without modulation, quite satisfactory communication is possible, over quite large distances. We still don't quite get the point, the assumption, or the misunderstanding that the question seems to imply.
What is the maximum cc you can ride in CA without a license?
maximum is 80 cc !!
Sound quality between AM and FM?
There are two types of modulations. They are amplitude modulation and frequency modulation. In AM, amplitude of the signal is modified. In FM, frequency is getting modulated. Frequency modulated with carrier waves are transmitted and received by receivers without any distortion.
What is the difference between encoding and modulation?
Encoding: The way in which the computer data is represented is known as encoding, there are several encoding techniques (Unipolar, Bipolar and Biphase).Modulation: Modulation is the method of changing some of the characteristics of the message signal so that it can be transmitted to comparatively large distance without(least) getting affected by noise or unwanted signals.Encoding: The way in which the computer data is represented is known as encoding, there are several encoding techniques (Unipolar, Bipolar and Biphase).Modulation: Modulation is the method of changing some of the characteristics of the message signal so that it can be transmitted to comparatively large distance without(least) getting affected by noise or unwanted signalsEncoding : Digital or Analog data --> Digital signalmodulation : Digital or Analog data --> Analog signal
