MVN Education CityQuestion Bank

CDMA Technology M.Tech 3rd semester ECE

Section A(UNIT 1) Short Answer Type

Q1. What do you mean by CDMA?

Q2. What do mean by spread spectrum ?

Q3. What are the advantages of spread spectrum?

Q4. What do you mean by PN Sequence?

Q5. Name the various Generations of CDMA ?

Medium Answer Type

Q1. Explain Frequency Hopping?

Q2. Write a short note on spread spectrum technology and its advantages?

Q3. What is the importance of PN Sequence in anti Jamming ? how we can reduce the problem of

jamming using this technology?

Q4. What is Gold code?

Q5. Compare a GSM and CDMA system?

Long Answer Type

Q1. Make a block diagram of 4- bit PN sequence generator and explain each block in detail

Q2. Write a short notes on generation of PN sequence ?

Q3. Explain various types of spread spectrum technology in detail?

Q4. Explain the deference between frequency and time hopping?

Q5. What do you mean by maximal length coding?

MVN Education CityQuestion Bank

CDMA Technology M.Tech 3rd semester ECE

Section A(UNIT 2)Short Answer Type

Q1. What is handoff?

Q2. What do you mean by multiple access channels ?

Q3. What are the advantages of soft handoff?

Q4. What do you mean by diversity?

Q5. What do you mean by reverse link power control ?

Medium Answer Type

Q1. Discuss the need of handoff?

Q2. Explain soft handoff in detail?

Q3. Make the block diagram of a CDMA mobile system?

Q4. Explain interference in a mobile system?

Q5. Briefly explain broadcasting channel access?

Numerical

There are no numerical in Section A

Long Answer Type

Q1. Write short notes on the following:

a) Rake receiver

b) Capacity of cellular system

Q2. Write short notes on the following

a) Hard handoff

b) Soft handoff

Q3. Briefly explain various parameters of Rake receiver performance analysis?

Q4. What do you understand by spread spectrum multiple access. Compare Broadcast and Multiple

Access Channels?

Q5. Explain reverse and forward link power control system in CDMA system and compare ?

MVN Education CityQuestion Bank

CDMA Technology M.Tech 3rd semester ECE

Section A(UNIT 3)Short Answer Type

Q1. Discuss advantages of OFDM?

Q2. What is frequency hopping ?

Q3. What are different channel coding techniques used in OFDM?

Q4. Why OFDM system is useful?

Q5. What is MC OFDM?

Medium Answer Type Q1. Explain any modulation system in OFDM?

Q2. In a OFDM system how frequency synchronization is achieved?

Q3. What are advantages of using combination of CDMA and OFDM.

Q4. Explain briefly the MC-CDMA.

Q5. What are the Difference between OFDMA and MC-CDMA?

Long Answer Type Q1. Describe OFDMA system .

Q2. Explain Frequency Synchronization and Time Synchronization in OFDMA.

Q3. Explain in detail the MT-CDMA?

Q4. Explain in detail the MC-DS CDMA systems?

Q5. Explain frequency and time hopping?

MVN Education CityQuestion Bank

CDMA Technology M.Tech 3rd semester ECE

Section B(UNIT4)Short Answer Type

Q1. What is GSM?

Q2. What are the advantages of CDMA over GSM?

Q3. What is UMTS?

Q4. What are BS and MSC?

Q5. What is the frequency ranges used in GSM?

Medium Answer Type

Q1.Explain why roaming of a CDMA phone in GSM is difficult?

Q2. What are various applications of UMTS system?

Q3. Give the difference between a GSM and CDMA mobile system?

Q4. Explain call connection procedure in a GSM mobile to GSM mobile system.

Q5. Explain specifications of 2G GSM system.

Long Answer Type

Q1. Explain IS 95 in details.

Q2. Write a short note on generation of GSM system?

Q3. Write Short notes on generations in CDMA system?

Q4. Compare CDMA 2000 and GSM 3G?

Q5. Write in detail about UMTS?

MVN Education CityQuestion Bank

CDMA Technology M.Tech 3rd semester ECE

Section B(UNIT5)Short Answer Type

Q1. What is cellular planning?

Q2. Name the methods for increasing cell capacity?

Q3. What is channel fading?

Q4. What do you understand by narrowband channel?

Q5.Discuss the effect of frequency on fading?

Medium Answer Type

Q1.Explain MIMO?

Q2. Discuss cell sectoring?

Q3. Write short note on flat frequency fading?

Q4. Explain multiple antenna system.

Q5. Explain why multiple antenna system is better than single antenna system.

Long Answer Type

Q1. Drive expression for capacity of a cell.

Q2. Drive expression for capacity of MIMO channel?

Q3. Explain parallel decomposition of MIMO channel and its advantages?

Q4. What do you understand by flat fading?

Q5.Expalin Multiple Input Multiple output (MIMO) systems ?

MVN Education City

Question BankCDMA Technology

M.Tech 3rd semester ECE

Section B(UNIT6)Short Answer Type

Q1. What is the need of a processor in a CDMA system?

Q2. Give the difference between coherent and non coherent system?

Q3. Give the difference between dynamic and static sectoring?

Q4. What are the advantages of spatial processing?

Q5. Why multiple user spatial processing is needed?

Medium Answer Type

Q1.Explain Non-coherent CDMA processor?

Q2. What are different types of rake receiver discuss its application?

Q3. What do know about non linear fading?

Q4. Explain registration of a CDMA handset on the network?

Q5. Explain cellular planning in CDMA network?

Long Answer Type

Q1. Explain Non-coherent & coherent CDMA spatial processors?

Q2. Write a short note on downlink beam forming for CDMA?

Q3. Make block diagram of CDMA cell architecture?

Q4. Make a block diagram of CDMA handset and explain?

Q5. Discuss the need and implementation of sectorisation in CDMA system?