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www.ScientechWorld. com Continuous Phase Frequency Shift Keying ( CPFSK )
| Date post: | 19-Jan-2017 |
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Science |
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Continuous Phase Frequency Shift Keying ( CPFSK )
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CPFSK Applications
GSM Technology
Bluetooth Technology
DECT Technology
& many more ……
GSM Technology
Bluetooth Technology
DECT Technology
& many more ……
Continuous Phase Frequency Shift Keying - Applications
www.ScientechWorld.com
Continuous Phase Frequency Shift Keying - Applications
www.ScientechWorld.com
Continuous Phase Frequency Shift Keying - Applications
www.ScientechWorld.com
DECT is a standard for digital wireless telephone technology Developed January 1988 by the ETSI DECT was first known as Digital European Cordless Telecommunications DECT change to its current name – Global Acceptance It is high-speed quality, low power technology Uses TDMA to transmit the radio signal to DECT phone Works from a base station with a handset
Continuous Phase Frequency Shift Keying - Applications
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Major Applications:-
Cordless Private Branch Exchange (PBX)
Wireless Local Loop
Cordless Terminal Mobility
Home Cordless Phone
GSM / DECT internetworking
Continuous Phase Frequency Shift Keying - Applications
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South America
North America
AsiaEurope
Africa
Australia
Continuous Phase Frequency Shift Keying - Applications
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Why CPFSK Modulation & Demodulation ? Linear Modulations like QPSK, OQPSK, DPSK, FSK etc.
- phase discontinuity problem- phase transitions cause problems for band limited and power-efficient transmission
especially in an interference limited environment.- the sharp phase changes in the modulated signal cause relatively prominent side-
lobe levels of the signal spectrum compared to the main lobe.
In a cellular communication system like GSM – Frequency Reuse is done extensively, these side-lobe levels should be as small as possible.
The abrupt phase transitions generate frequency components that have significant amplitudes. Thus the resultant power in the side-lobes causes co-channel and inter- channel interference.
High power amplifiers may have to be operated in the non-linear region in order to improve the transmission power. Continuous phase modulation schemes are preferred to counter these problems.
Continuous Phase Frequency Shift Keying - Applications
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CPFSK Modulation - Demodulation & its types MSK modulation & demodulation GMSK modulation & demodulation FSK modulation & demodulation GFSK modulation & demodulation
Continuous Phase Frequency Shift Keying - Applications
www.ScientechWorld.com
CPFSK Modulation - Demodulation & its types
Continuous Phase Frequency Shift Keying - Applications
www.ScientechWorld.com
CPFSK Modulation - Demodulation & its types
Continuous Phase Frequency Shift Keying - Applications
www.ScientechWorld.com
CPFSK Modulation - Demodulation & its types
Continuous Phase Frequency Shift Keying - Applications
www.ScientechWorld.com
CPFSK Modulation - Demodulation & its types
Continuous Phase Frequency Shift Keying - Applications
www.ScientechWorld.com
Thank youFor more details. Please visit
www.scientechworld.com
