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Consider the block diagram of QPSK transmitter shown below; sketch the waveform at point B, C and D if 1100100010 binary sequence is applied

Consider the block diagram of QPSK transmitter shown below; sketch the waveform at point B, C and D if 1100100010 binary sequence is applied at point A. a (1) Binary data sequence A Polar nonreturn- B to-zero level encoder Demultiplexer a(1) C $(t)=2/7 cos(2) X D $2(t)=2/T sin(2mft) QPSK signal s(t)

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