Q. The technique that makes possible the task of listening and talking in communication system is called ________

View solution

Q. Frequency division duplexing provides ________ distinct bands of frequencies for _________ user.

View solution

Q. The forward band in FDD provides traffic from the mobile to base station.

View solution

Q. The frequency separation between each forward and reverse channel changes throughout the system.

View solution

Q. Time division duplexing uses ________ to provide both a forward and reverse link.

View solution

Q. TDD is effective for _________

View solution

Q. In wideband systems, the transmission bandwidth of a single channel _________ coherence bandwidth of the channel.

View solution

Q. In narrowband system, the channels are usually operated using TDD.

View solution

Q. Narrowband FDMA allows users to share the same radio channel allocating a unique time slot to each user.

View solution

Q. Frequency division multiple access (FDMA) assigns ______ channels to _______ users.

View solution

Q. During the period of call, other users can share the same channel in FDMA.

View solution

Q. The FDMA channel carries ____________ phone circuit at a time.

View solution

Q. If the FDMA channel is not in use, it can be used by other users.

View solution

Q. The bandwidth of FDMA channel is ______

View solution

Q. The symbol time in FDMA systems is _________ thus intersymbol interference is ______

View solution

Q. Due to _________ transmission scheme __________ bits are needed for overhead in FDMA systems.

View solution

Q. Which of the following is not true for FDMA systems as compared to TDMA systems?

View solution

Q. __________ is undesired RF radiation.

View solution

Q. __________ is based on FDMA/FDD.

View solution

Q. In US AMPS, 416 channels are allocated to various operators with 10 kHz guard band and channel between them is 30 kHz. What is the spectrum allocation given to each operator?

View solution