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pi/4 DQPSK Modulation

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Demonstrates modulation of a sequence of random symbols using pi/4 Differential Phase Shift Keying.

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Description

pi/4DQPSK is a popular variant of QPSK in which the phase change of carrier is limited to +45,-45,+135,-135 degrees. This program Demonstrates modulation of a sequence of random symbols using pi/4DQPSK scheme and plots the scattered noisy symbols and trajectories.
(tested on R2011b and works properly)

Required Products Communications System Toolbox
MATLAB
MATLAB release MATLAB 7.13 (R2011b)
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