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It is the pure sine wave signal with no modulation (data, information). It doesn't vary in amplitude or frequency. Not really a signal yet, which implies information. Call it a wave.
From there, we have:
CW- Morse Code by turning the carrier on and off
ICW- the I means interupted, close to the same as CW
MCW- still coded but by Modulating the carrier with a tone.
AM- the amplitude is modulated (by voice or tone) Basic voice- but creates sidebands
FM- The frequency is modulated...
SSB-Single sideband. Like AM but without the carrier and one sideband. Low bandwidth, low power.
FSK- Frequency shift Keying, where the frequency of the modulation source is shifted hi to lo in ASCII, for teletype communication via radio links..
At this point a bit more complex....
What else can I help you with?
Why carrier signal is always in analog signal?
It isn't always. Baseband analog signals have no carrier.
Why is the intelligence signal not in the AM envelope?
The intelligence signal is in the AM envelope.In AM modulation, the carrier is amplitude modulated by the signal. This signal appears as the envelope of the carrier. You can demodulate it by following the peaks on each cycle of the carrier. You can either follow the positive peaks or the negative peaks - it does not matter if the original modulation is symmetrical.
What is signal modulation?
modulating signal is the message to be carried by the carrier signal.
What is the frequency and wave form of old land line phone carrier?
First answer.The landline phone has no carrier frequency it is a baseband signal with a 3KHz bandwidth.Correction:So there is a signal that can handle a 3KHz bandwidth, what do you call that signal? I call it a carrier, if you don't have a carrier, you will need to amplify the audio every 30 meters else you will end up with no audio at the end of the line. So there is a carrier on all phone lines. Note the carrier signal are up to 90 VPP and is AM modulated at the instrument, but in digital systems the carrier are switched on and of, FSK modulation.
When signal amplitude is equal to carrier amplitude then modulation index is?
amplitude modulating signal
When does Carrier Signal occur?
The carrier signal occurs at the beginning to transmit information.
What are the difference between carrier signal modulating signal modulated signal baseband and passband?
carrier signal- use for the purpose of conveying information. modulating signal- causes variations in some characteristics of carrier signal. modulated signal - carrier signal after altration in its characteristics is called modulated signal. example- if you want to see an object (suppose it is an modulating signal),you need light(light is carrier signal) and when light will reflect on object you will be able to see if (that is modulated signal)
Why carrier signal is always in analog signal?
It isn't always. Baseband analog signals have no carrier.
Is carrier signal present at output of double side band suppressed carrier?
No, the carrier signal is not present at the output of double side band suppressed carrier. That is what suppressed carrier means. However, the receiver has enough information to regenerate the carrier if need be. The advantage of suppressed carrier mode is that more power can be deployed to the signal-carrying portion of the modulated carrier.
Changing the wavelength of the carrier wave to match that of the signal is called?
Changing the wavelength of the carrier wave to match that of the signal is called modulation. This process allows the signal to be encoded onto the carrier wave for transmission and later decoded at the receiver to extract the original signal.
How receiver detect that which is information signal and which is carrier signal and how it separate both at destination?
carrier is constant frequency information is a change from that constant
Why is the intelligence signal not in the AM envelope?
The intelligence signal is in the AM envelope.In AM modulation, the carrier is amplitude modulated by the signal. This signal appears as the envelope of the carrier. You can demodulate it by following the peaks on each cycle of the carrier. You can either follow the positive peaks or the negative peaks - it does not matter if the original modulation is symmetrical.
What is the difference between SINR and CINR?
SINR - Signal to Interference and Noise Ratio CINR - Carrier to Interference and Noise Ratio difference between those to is difference between carrier and signal carrier is signal who doesn't "carry" any information . it must be modulated( by phase,freq or amplitude) and those changes convey information. carrier is unmodulated signal signal is defined as useful signal which carries information SINR is power of signal to power of interfenence and noise ratio
What converts analog signal information into an analog carrier signal?
Analog Modulation
What cell phone carrier has the weakest signal?
The cell phone carrier that has the weakest signal varies by the market that you live in and even sometimes your location on your street. In the Utah area the carrier with the weakest signal is T-Mobile but that changes if you go to another area.
What is signal modulation?
modulating signal is the message to be carried by the carrier signal.
What is the frequency and wave form of old land line phone carrier?
First answer.The landline phone has no carrier frequency it is a baseband signal with a 3KHz bandwidth.Correction:So there is a signal that can handle a 3KHz bandwidth, what do you call that signal? I call it a carrier, if you don't have a carrier, you will need to amplify the audio every 30 meters else you will end up with no audio at the end of the line. So there is a carrier on all phone lines. Note the carrier signal are up to 90 VPP and is AM modulated at the instrument, but in digital systems the carrier are switched on and of, FSK modulation.
