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

Q. Bit error rate provides the information about the type of error.

View solution

Q. Which of the following is specified by a specific number of bit errors occurring in a given transmission?

View solution

Q. Irreducible BER floor is created in frequency selective channels due to ____________

View solution

Q. Irreducible BER floor is created in non frequency selective channels due to ____________

View solution

Q. The performance of BPSK is best is term of BER because _______

View solution

Q. High capacity mobile systems are interference limited.

View solution

Q. Which of the following do not impact bit error rate in mobile communication systems?

View solution

Q. Coherence time refers to ____________

View solution

Q. Doppler spread refers to _________

View solution