Wednesday, April 24, 2013

Some frequenctly used modulation schemes

GSM uses GMSK modulation scheme.
GPRS also uses GMSK modulation scheme.
EDGE and UMTS uses 8-PSK
CDMA uses QPSK
WCDMA uses QPSK
BlueTooth uses Gaussian frequency-shift keying (GFSK), It can achieve a gross data rate of 1 Mbit/s. In extended data rate (EDR) π/4-DQPSK and 8DPSK are used, giving 2, and 3 Mbit/s respectively.

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