NETW 589 Week 1 Discussions and Quiz Wireless Communication Systems

NETW 589 Week 1 Discussions and Quiz

Wireless Communication Systems

Week 1

NETW 589 Week 1 DQ 1

How Do You Use Wireless

No doubt you use wireless devices every day. Provide some examples as to what the device does, the size of the device, and the frequency the device uses.

NETW 589  Week 1 DQ 2

The Replacement for DSSS, OFDM

Until recently most low-speed devices used FHSS and higher-speed devices used DSSS; today Orthogonal Frequency Division Multiplexing is the new method. What is OFDM? How is it used? Why is it used?

NETW 589 Week 1 Quiz
1. (TCO A) What disadvantages do wireless networks have?
2. (TCO A) An electromagnetic signal contains what fields? What is their relationship?
3. (TCO A) Define and give an example of narrow band and spread spectrum transmission. What is the big disadvantage of narrow band, and why is spread spectrum a good alternative?
4. (TCO A) How is information conveyed using AM (amplitude modulation)?
5. (TCO A) In phase modulation, what happens to the amplitude, the frequency, and the starting point of the cycle of a signal?