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  • Colleges outside AP cash in!

    Colleges outside AP cash in!

    Oct. 3: The large-scale migration of students from Andhra Pradesh has prompted several educational institutes from neighbouring states to depute representatives in all major cities across AP to conduct admissions and offer attractive packages. College representatives from Bengaluru, Chennai and Mumbai are camping in major hotels in all the cities to conduct admissions.

    Parents and students are apprehensive that colleges will remain closed for months after December, when the Srikrishna Committee submits its report, in case violence breaks out due to the bifurcation issue as
    happened in 2009. Students could stand to lose a year or see delays in examinations or in announcing results.

    Nearly 1,000 professional colleges are located in and around Hyderabad alone and they draw students from all the three regions of the state. But with the outbreak of the Telangana agitation, parents from the Andhra and Rayalaseema regions are
    reluctant to send their children to these colleges which could be affected if trouble flares up again in December.

    The management quota seats for which these students paid `10-15 lakh are today going begging as parents have opted for management quota seats for their children in colleges located in Bengaluru, Chennai and Mumbai.

    Source: DC

  • Anna University : B.E Electronics & Communication Engineering B.E/B.Tech Degree Examination, April/May 2010 Question Papers

    Anna University : B.E Electronics & Communication Engineering B.E/B.Tech Degree Examination, April/May 2010 Question Papers

    QUESTION Paper Code- D2197

    B.E/B.TECH. DEGREE EXAMINATION, APRIL/MAY 2010

    EIGHTH SEMESTER

    ELECTRONICS AND COMMUNICATION ENGINEERING

    EC 1451-MIBILE COMMUNICATION
    (REGULATION 2004)
    (Common to B.E (part time) seventh semester regulation 2005)

    Time:3 hrs Maximum:100 marks

    Answer ALL Questions

    PART A(10*2=20 marks)

    1.List any four advantage of third generation (3G) mobile networks

    2.Write down the formula for co-channel reuse ratio.

    3.What is Doppler shift.

    4.What is meant by coherence bandwidth.

    5.Name the four space diverrsity receptiob technique.

    6.Define absolute bandwith.

    7.what is meant by vocoders.

    8.What is self-jamming in CDMA.

    9.What is the purpose of SIM.

    10.What are the five functional entities of a DECT system.

    PART B (5*16=80 marks)

    11. (a) (i) Explain in detail the various cellular components. (8)

    (ii)Explain the fundamentals of Digital cellular systems. (8)

    OR
    (b) (i) Explain the process of operation of paging systems. (8)

    (ii)Describe the steps involved in making a cellular telephone call (8)

    12. (a) Derive the Impluse response model of a multiplepath channel. (16)
    OR
    (b) Explain in detail about type of small scale fading. (16)

    13. (a)(i)Write a note on RAKE recevier, with block diagram. (10)
    (ii)Explain frequency diversity and time diversity . (6)

    OR
    (b)Explain the concept of minimum shift keying and Gaurion MSK (16)

    14. (a) Explain TDMA and discuss the time division Multiple acess frame structure (16)

    OR
    (b) (i) Draw the block diagram of RELP encoder. Explain the function of coder. (6)
    (ii)Enumerate the process for selecting the optimum excitation signal (10)

    15. (a) (i) Discuss the features and service of GSM. (8)
    (ii)Explain the GSM system architecture with the neat sketch. (8)

    OR

    (b) discuss the channels and cellular operation in Advanced Mobile Phone
    Systems(AMPS). (16)

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