FT 2-3 Lesson 12 Spread Spectrum Technology
How does spread spectrum technology reduce the probability of signal jamming
By transmitting over a wide frequency spectrum
The federal communications commission (FCC) rules regarding power output for frequency hopping spread spectrum (FHSS) state that a maximum output to the international radiator (IR) with 5 megahertz (MHz) of carrier frequency bandwidth must be which one of the following
125 milliwatts (mW)
What is the with of direct sequence spread spectrum (DSSS) channel and how far a part are their center frequency spaced?
22 megahertz (MHz) and 5 MHz.
Although there are many different implications os spread spectrum technology, what are the only types specified by the FCC in the code of federal regulations (CFF)volume 47 part 15?
Direct sequencing spread spectrum (DSSS) and frequency hopping spread spectrum (FHSS)
Why is direct sequence spread spectrum (DSSS) the most widely known and the most used of the spread spectrum types?
Its ease of implementation and high data rate.
The ratio of the chipping code to data bits for direct sequence spread spectrum (DSSS) signal is called which of the following ?
Processing gain
Why is spectrum technology used in applications such as Bluetooth wireless personal area network (WPAN)
Spread spectrum technology allows wireless network to create a short range personal communications network.
Which component of frequency hopping spread spectrum (FHSS) system create more overhead than any similar component in a direct sequence spread spectrum (DSSS) system
The interframe spacing
In a frequency hopping spread spectrum (FHSS) system that use 10 frequency across a 12 megahertz (MHz) frequency band, what happen if narrowband interference occurs at only one of the 10 frequency?
The spread spectrum signal remains intact. Instead of being lost. The data on the interfered frequency is retransmitted on one of the other nine frequencies.
Which of the following networks or products use spread spectrum technology ?
Wireless local area network (WLAN) Bluetooth and Global Positioning System (GPS)