21 Jun COMPARE AND CONTRAST THE BLUETOOTH AND WIFI TECHNOLOGIES.
Question 1.
a. Compare and contrast the Bluetooth and WiFi technologies.
b. Describe the application areas supported by Bluetooth.
Question 2.
a. Explain the difference between a core specification and a profile specification in the Bluetooth standard.
b. What is a usage model? List the important usage models and briefly describe the functions provided and the protocols used by one of the usage models.
Question 3.
a. What is the relationship between the master and a slave in the Piconet?
b. How does a device belonging to one Piconet communicate with a device belonging to a different Piconet?
Question 4.
a. What design makes it possible for Bluetooth to coexist with a WLAN that uses IEEE 802.11?
b. How does Bluetooth combine frequency hopping and time division duplex schemes?
Question 5.
Identify the key features of the Bluetooth baseband specification and provide a brief description of each feature.
Question 6.
a. List the three access code fields in Bluetooth packet format and briefly describe the function of each field.
b. The 64-bit PN sequence used for constructing the sync word in a packet format is defined by the equation P(X)=1+X^2+ X^3+X^5+X^6. Using a seed value of 000001 for the PN sequence, show the first eight bits of the sequence. Use the notation of Figure 7.12 of the text where B0=1 and B1 through B5 are all set to 0.
Question 7.
Describe the error correction techniques used in Bluetooth baseband.
Question 8.
a. CVSD is a form of delta modulation (DM) used for encoding Bluetooth audio. How is CVSD different from DM? Please explain.
b. During the k^th sampling interval of a CVSD modulation scheme, the current value of input x(k) is 1000, the previous value of approximating staircase function x ̂(k-1) is 990, and the current value of ä(k-1) is 30. Assuming that the last four output bits are the same, calculate the next value of x ̂(k-1).
Question 9.
Bluetooth technology is very popular. What do you think are the reasons for this popularity? Please describe.
Question 10.
List the various IEEE 802.15-based PAN standards and briefly describe the charter of each standard.
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