SRM University 2011-7th Sem B.Tech Electronics and Communications Engineering ECE Wireless communication - Part time - - Question Paper

WIRELESS COMMUNICATION - B.TECH PART TIME - NOVEMBER 2011

PART- A (10X2=20)

1. describe grade of service (GOS).
2. describe MAHO.
3. What is meant by coherence bandwidth?
4.What are the Time Dispersion parameters of Multipath channels?
5. Name the 4 space diversity reception techniques.
6.What is meant by decision feedback equalization?
7. What is Access point?
8. What is the relationship ranging from master and slave in a piconet?
9. What is Blue tooth radio specification?
10. What is Bluetooth?
PART-B (16X5=80)
11. (a) define the steps involved in making a cellular telephone call with timing diagram. (16)

or (b) discuss TDMA ,FDMA and CDMA and explain the time division,multiple access frame
structure. (16)

12. (a) Derive the formula of the path loss for the 2 ray model with antenna gains. (16)
or (b) Derive the impulse response model of a multipath channel. (16)

13. (a) discuss the concept of minimum shift keying and GMSK (16)
or (b) What is non linear equalization? discuss the kinds of non linear equalization? (16)

14. (a) discuss the IEEE802.11 MAC frame format and MAC timing . (16)
or (b) Draw and discuss the architecture and services of IEEE802.11 (16)

15. (a) discuss radio specification s and base band specifications of Blue tooth. (16)

or (b) Draw and discuss the protocol architecture of Blue tooth (16)

Earning:   Approval pending.