Coherent digital modulation uses a reference carrier signal at the receiver to detect the transmitted signal, while noncoherent digital modulation does not use a reference carrier signal.
Solution:
f_USB = f_c + f_m = 100 kHz + 5 kHz = 105 kHz f_LSB = f_c - f_m = 100 kHz - 5 kHz = 95 kHz Coherent digital modulation uses a reference carrier signal
This draft report provides solutions to selected problems in the fourth edition of "Sistemas de Comunicaciones Electrónicas" by Wayne Tomasi. The solutions cover various topics in electronic communication systems, including signals and systems, amplitude modulation, angle modulation, digital modulation, and transmission lines and waveguides.
Solution:
3.1 An AM signal has a carrier frequency of 100 kHz and a modulating signal of 5 kHz. Calculate the sideband frequencies.
4.1 An FM signal has a carrier frequency of 100 MHz and a modulating signal of 10 kHz. Calculate the frequency deviation. Solution: 3
2.2 Determine the power spectral density of a random signal.