Chapter 8 Communication Systems ② Sinusoidal carrier Communication LPF Channel oslo t+0 bos(o,t+0 Transmitter Receiver Modulation Synchronous Demodulation 1. Suppose the modulator and demodulator are not synchronized in phase. 2. Suppose the modulator and demodulator are not synchronized in frequency. 66 Chapter 8 Communication Systems ② Sinusoidal Carrier ( ) c c cos  t + x(t) y(t) Communication Channel Transmitter Modulation Receiver Synchronous Demodulation LPF x(t) w(t) cos(  d t +  ) 1. Suppose the modulator and demodulator are not synchronized in phase. 2. Suppose the modulator and demodulator are not synchronized in frequency