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What is the difference between amplitude shift keying and AM modulation?
Wiki User
∙ 11y ago
Amplitude modulation (AM) is a technique used in electronic communication, most commonly for transmitting information via a http://wiki.answers.com/wiki/Radio http://wiki.answers.com/wiki/Carrier_wave. AM works by varying the strength of the transmitted signal in relation to the information being sent. Angle modulation is a class of http://wiki.answers.com/wiki/Analog_signal http://wiki.answers.com/wiki/Modulation. These techniques are based on altering the http://wiki.answers.com/wiki/Angle or http://wiki.answers.com/wiki/Phase_%28waves%29 of a http://wiki.answers.com/wiki/Sinusoidal http://wiki.answers.com/wiki/Carrier_wave to http://wiki.answers.com/wiki/Transmission_%28telecommunications%29 data. The two main types of angle modulation are: http://wiki.answers.com/wiki/Frequency_modulation (FM) in which the http://wiki.answers.com/wiki/Frequency is varied, http://wiki.answers.com/wiki/Phase_modulation (PM) in which the http://wiki.answers.com/wiki/Phase_%28waves%29 is varied.
Wiki User
∙ 15y ago
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Which modulation technique is used in gsm?
GSM uses GMSK modulation scheme. GPRS also uses GMSK modulation scheme. EDGE and UMTS uses 8-PSK.
What are the different forms of amplitude modulation?
There are many types of modulation. A few examples...AmplitudeFrequencyPhase ShiftModified Frequency (MFM)Non Return to Zero Inverted (NRZI)Frequency Shift Keying (FSK)Other contributors - Please add to this list
How does the intelligence signal modulates the carrier?
There are three major types of modulation:AM, Amplitude Modulation, where the modulation signal is altering the amplitude of the carrier according to its own amplitude, normally this is done in the output stage. Therefor a strong audio signal is necessary at the same or a little less than the power of the carrier, never higher, because that will over modulate the carrier that will resort in distortion of the receiver output. AM is used in the lower band of the RF spectrum.FM, Frequency Modulation, where the frequency of the carrier is altered by the audio signal. When the amplitude of the audio is going higher the frequency go lower. Modulation happen at the oscillator stage, therefor a small audio signal is used to modulate the frequency. FM is normally used in the higher frequency range of the RF spectrum, 50MHz and up.FSK, Frequency-shift keying, used for data transmission, this type of modulation is simply, switching the carrier on and of, a high bit will switch the oscillator on and a low bit will switch it off, in some designs a low will be on and a high off.
What is effect on amplitude shift keying modulation and demodulation due to use of transistor SL100?
The SL100 is a PNP medium power transistor, suitable for use up to ~100MHz. This can be used in the power amplifier stage, with the output connected to a tuning network/transformer + antenna for AM modulation. It's purpose, if used in this application, is to supply current (usually a voltage amplifier circuit will precede this one) to drive the antenna.
Which type of modulation is used in TV transmission?
In television system for video transmission AM is used and for audio transmission FM is used....
What is amplitude shift keying modulation?
micxingthe between the phasr and frepaancy shift keying
What is the difference between amplitude shift keying and AM modulation system?
Major disadvantage is that telephone lines are very susceptible to variations in transmission quality that can affect amplitude Ann
What is Amplitude shift keying ASK?
Amplitude Shift Keying (ASK) is a digital modulation technique where the amplitude of the carrier signal is varied in response to the digital input data. A high amplitude represents a binary 1, while a low amplitude represents a binary 0. ASK is susceptible to noise and interference but is simple to implement and can achieve high data transmission rates.
What is the application of frequency shift keying?
amplitude shift keying is a form of modulation in digital signal that variation in the amplitude of carrier wave. application of ask: *used mainly for radio frequencies
What is difference between ask and am?
The most fundamental difference, I would say, is that Amplitude Modulation (AM) is a kind of Analog Modulation Technique (the modulation is applied continuously in response to the analog information signal) where Amplitude Shift Keying is a type of Digital Modulation Technique ( an analog carrier signal is modulated by a discrete signal, digital modulation methods can be considered as digital-to-analog conversion, and the corresponding demodulation or detection as analog-to-digital conversion. The changes in the carrier signal are chosen from a finite number of M alternative symbols).
What is the difference between the AM modulation and ASK modulation?
This is hard to explain. AM means amplitude modulation, while ASK is amplitude-shift keying. AM is usually analog as it is modulated based on the strength of the signal, though you can use it to send a digital signal. ASK represents digital data as variations in the amplitude of a carrier wave. Any digital modulation technique will represent the data using a finite number of different signals. While AM is used mostly for radio and television, ASK is used for telegraph signals, transmission across telecommunications equipment, and fiber optics.
What modulation does bluetooth use?
It uses GFSK (Gaussian Frequency Shift Keying) modulation technique.
What is the difference between amlitude shift key and frequency shift key?
Amplitude shift keying changes the height/power of the transmitted signal without altering the frequency. Frequency shift keying changes the frequency of the transmission without altering the height/power of the transmitted signal. Morse code is an example of amplitude keying where the amplitude is 0 or 100%. RTTY teleprinter uses FSK with two frequencies and the codes that represent text characters are sent with patterns of the two frequencies.
What is block diagram of frequency shift keying modulation?
Block digram of fsk is the representation of fsk modulation
What is the difference between FSK and ASK?
Both are digital modulation types for radio, transmitting data as two states usually. Amplitude shift keying varies the amplitude of the carrier, and often is used to switch the carrier on or off for the two states. Frequency shift keying varies the frequency of the carrier, so it is one of two distinct frequencies. These can be seen as digital versions of AM and FM.With amplitude shift keying the detector needs to distinguish between the two levels, which can vary widely due to propagation. Some sort of gain control or automatic threshold adjustment is needed, and noise bursts can be misinterpreted as data. This method tends to be simpler to implement, but less reliable than other modulation types (more prone to interference).Frequency shift keying is more or less constant amplitude so the interference (which is mostly AM in nature) is better suppressed. Frequency stability can be an issue with narrow band UHF radios.---ASKAudio Shift Keying - Digital signals are sent by modulating a carrier using an two or more tone audio tone. This is generally used for single sideband transmissions, but since it is an audio signal it can be used on FM/PM/AM.FSKFrequency Shift keying - Digital signals are sent by changing the frequency of an amplitude UN-modulated signal and decoding it using a side-tone receiver to reproduce the tones. FSK can be sent by any mode which has a carrier.
The amount of frequency shift during modulation is called?
Frequency shift keying in digital communication and Frequency modulation in analog communication..........
Advantages amplitude shift keying?
Amplitude shift keying (ASK) is simple to implement and requires less bandwidth compared to other modulation techniques. It is also less susceptible to noise interference, making it suitable for applications where signal clarity is important. Additionally, ASK is energy efficient as it allows for power conservation by varying amplitude levels.
