Q. As the value of M _________ the bandwidth efficiency ________

View solution

Q. The power efficiency of the M ary PSK decreases because of the _____

View solution

Q. In QAM, the amplitude is _______ and phase is _______

View solution

Q. M-ary QAM signal have constant energy per symbol.

View solution

Q. In comparison to M-ary PSK, M-ary QAM bandwidth efficiency is _____ and power efficiency is ________

View solution

Q. The bandwidth efficiency of an M-ary FSK signal ________ with ________ in M.

View solution

Q. Power efficiency of M-ary FSK increases, since _________

View solution

Q. The transmission bandwidth of spread spectrum techniques is equal to the minimum required signal bandwidth.

View solution

Q. Why spread spectrum technique is inefficient for a single user?

View solution

Q. Which of the following is not a property of spread spectrum techniques?

View solution

Q. Which of the following is not a characteristic of PN sequence?

View solution

Q. PN sequence can be generated using sequential logic circuits.

View solution

Q. The period of a PN sequence produced by a linear m stage shift register cannot exceed _____ symbols.

View solution

Q. DSSS system spreads the baseband signal by ________ the baseband pulses with a pseudo noise sequence.

View solution

Q. Frequency hopping involves a periodic change of transmission _______

View solution

Q. What is the set of possible carrier frequencies in FH-SS?

View solution

Q. The bandwidth of the channel used in the hopset is called _________

View solution

Q. The processing gain of FH systems is given by ratio of _______

View solution

Q. FH systems do not have collisions.

View solution

Q. In fast frequency hopping, hopping rate is less than the information symbol rate.

View solution