Chapter 6

1.      Draw the architecture of GSM system and explain each block in brief.

2.      Compare GSM, IS-136 and IS-95 standards in terms of modulation schemes, multiple access schemes, frequencies used, physical channel bandwidth, number of users/ physical channel and typical power radiated by mobile stations using these standards. Give your answer in tabulated form.

3.      List advantages and disadvantages of CDMA compared to GSM.

4.      Explain in details the third generation(3G) wireless networks standards:- 1) 3GW-CDMA (UMTS) 2) 3G cdma2000 3) 3G TD - SCDMA

5.      With the aid of block diagrams, explain in detail the IS-95 CDMA forwardand reverse channels and compare the two

6.      Explain HSCSD for 2.5 GSM.

7.      2G and 3G wireless networks.

8.      Compare Wi-Fi and WiMAX in brief.

9.      Compare HSCSD and GPRS. Explain briefly GPRS

10.  Answer following questions with respect to Wi-MAX technology:( full-form, access method, approximate coverage range in km, upper limit on data rate , range of radio channel bandwidth, two applications)