FUNDAMENTALS OF COMPUTER

TELECOMMUNICATIONS SYSTEMS

COMMUNICATION WIRELESS COMPUTING DEVICES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which signaling method uses a narrow frequency band and hops data signals in a predictable sequence?
A
FHSS
B
DSSS
C
OFDM
D
CDMA
Explanation: 

Detailed explanation-1: -FHSS requires the use of narrowband signals that change frequencies in a predictable pattern. The term frequency hopping refers to data signals hopping between narrow channels.

Detailed explanation-2: -In FHSS, the transmitter hops between available narrowband frequencies within a specified broad channel in a pseudo-random sequence known to both sender and receiver.

Detailed explanation-3: -Frequency-hopping spread spectrum (FHSS) is a method of transmitting radio signals by rapidly changing the carrier frequency among many distinct frequencies occupying a large spectral band. The changes are controlled by a code known to both transmitter and receiver.

Detailed explanation-4: -Frequency hopping spread spectrum (FHSS) and direct-sequence spread spectrum (DSSS) are two methods of spreading a transmitted spectrum over a wide bandwidth, so that the energy at any particular frequency is not detectable without special foreknowledge of the spreading technique.

Detailed explanation-5: -There are two types of frequency hopping spread spectrum techniques: fast frequency hopping and slow frequency hopping. In slow frequency hopping, the carrier frequency is changed on a regular basis. The hopping sequence is created and is known for the sender and receiver.

There is 1 question to complete.