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The modulation used in GSM is Guassian minimum-shift keying (GMSK), a kind of continuous-phase frequency shift keying. In GMSK, the signal to be modulated onto the carrier is first smoothed with a Guassian low-pass filter prior to being fed to a frequency modulator, which greatly reduces the interference to neighboring channels (adjacent channel interference).
Added By:Muhammad Kamran Atif
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Why gmsk is used for gsm?
GMSK for GSMGMSK is used in GSM because it provides good spectral efficiency. i think 8-psk modulation is also used..... for edge hardware.Well the reason GMSK is used for GSM.1. High spectral Efficiency2. Since Basic MSK uses Phase variations for modulation so better immune to noise.3.Use of non-linear amplifiers at receivers can be utilized since the information is stored in phase variations rather than amplitude, Non-linear amplifiers give better response and consume less power so low battery usage which is a important parameter in Cellular technology.
What is FM?
FM stands for frequency modulation. The definition is: when the frequency of the carrier wave is changed in accordance with the intensity of the signal, it is called frequency modulation. In frequency modulation, only the frequency of the carrier wave is changed in accordance with the signal. However, the amplitude of the carrier wave remains unchanged.
How do you convert gsm of paper into mm?
To convert grammage (gsm) of paper into thickness (mm), you must know the density of the paper. Paper density varies depending on the type of paper. However, as a general approximation, you can convert by using the formula: thickness (mm) = gsm / density (g/cm³).
What is used to encode binary to a carrier that is part of the electromagnetic spectrum?
To encode binary data onto a carrier wave that is part of the electromagnetic spectrum, modulation techniques are used, such as Amplitude Modulation (AM), Frequency Modulation (FM), or Phase Modulation (PM). These techniques vary the carrier wave's amplitude, frequency, or phase in accordance with the binary data being transmitted, effectively allowing the information to be conveyed over radio waves, microwaves, or other forms of electromagnetic radiation. This process is essential for wireless communication systems, including radio, television, and mobile networks.
Why is source modulation used in atomic absorption spectroscopy?
Source modulation in atomic absorption spectroscopy is used to enhance sensitivity and reduce background noise. By modulating the lamp intensity at a specific frequency, it becomes easier to distinguish the absorption signal from the baseline noise, leading to better detection limits and accuracy in the analysis.
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 Type of modulation used in edge?
In Edge (Enhanced Data rates for GSM Evolution), the modulation scheme primarily used is 8PSK (8 Phase Shift Keying). This allows for higher data rates compared to the earlier GSM standard, which used GMSK (Gaussian Minimum Shift Keying). With 8PSK, Edge can transmit three bits per symbol, effectively increasing the capacity and efficiency of the network.
How modulation rate is calculated for gsm?
The modulation rate in GSM (Global System for Mobile Communications) is primarily determined by the modulation scheme used, which is Gaussian Minimum Shift Keying (GMSK). In GSM, each symbol represents one bit of data, and the modulation rate is calculated based on the symbol rate, which is typically set at 270.833 ksym/s. Thus, the modulation rate is effectively equal to the symbol rate, as each symbol conveys one bit of information, leading to a maximum data rate of about 1.2 kbps per channel.
What type of antenna is used in gsm and CDMA?
http://www.ehow.com/list_7279317_types-gsm-antennas.html
What is the type of current used by GSM Telecom Equipment?
dc
What are the Uses of modulation techniques in telecommunication?
In GSM generally GMSK which is a derivative of MSK is beeing used because of its spectral efficiency and more noise resistant. Regards Sumeer Mehaboob
What type of modulation is used to carry the picture portion of a television signal?
Amplitude Modulation (AM) is used for the picture portion of a television transmission while Frequency Modulation (FM) is used for the audio portion.
What does Base stand for in 100BaseT?
"Base band", meaning that no modulation is used."Base band", meaning that no modulation is used."Base band", meaning that no modulation is used."Base band", meaning that no modulation is used.
What type of modulation is pulse position modulation and why?
It is a type of Pulse modulation as in PPM the position of pulse of carrier pulse train is varied in accordance with the modulating signal.
Where is delta modulation used?
Adaptive delta modulation is used in audio communication systems to avoid the two drawback of delta modulation.
What modulation technique used in mobile phones?
Currently the mobiles use GSM(Geo Synchronous Mobiles ) and CDMA(Code Division Multiple Accesss) techniques. GSM inturn uses TDMA(Time Division Multiplexing) or FDMA(Frequency Division Multiplexing) or sometimes both to fit in the required criteria.
What modulation is used in telegraphy system?
pulse code modulation method used a telephony.
