If carrier modulated by a digital bit stream had one of the possible p – McqOptions

MCQOPTIONS

1.	If carrier modulated by a digital bit stream had one of the possible phases of 0, 90, 180 and 270 degrees, then the modulation is called
A.	BPSK
B.	QPSK
C.	QAM
D.	MSK
Answer» C. QAM

Discussion

No Comment Found

Related MCQs

Number of bits per symbol in a 16 QAM is
In 512 QAM, the number of signal vectors of the signal constellation is:
Quadrature multiplexing is
In the modulation system, the energy per bit-to-noise power density ratio \(\frac{{{E_b}}}{{{N_o}}}\) is(1) \(\frac{C}{N} \times \frac{{{f_b}}}{B}\)(2) \(\frac{N}{C} \times \frac{B}{{{f_b}}}\)(3) \(\frac{C}{N} \times \frac{B}{{{f_b}}}\)(4) \(\frac{N}{C} \times \frac{{{f_b}}}{B}\)Where:N = Noise power of thermal (W)B = Bandwidth (Hz)C = Carrier power (W) fb = Bit rate (bps)
Quadrature Amplitude Modulation (QAM) is a combination of:
ASK, PSK, FSK, and QAM are the examples of:
If carrier modulated by a digital bit stream had one of the possible phases of 0, 90, 180 and 270 degrees, then the modulation is called
An analog signal has a bit rate of 8000 bps and a baud rate of 1000 baud. The data elements carried by each signal and signal elements needed are respectively:
In a ASK system, the amplitude of the carrier signal is 10V and the binary to be transmitted is {1, 0, 1, 1, 1, 1, 0, 0, …}. The amplitude of the output will be:
For a total transmit power (Pt) of 1000 W and for a transmission rate of 50 Mbps, the energy per bit (Eb) will be