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WCDMA Interview Questions and Answers

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This page provides a WCDMA questionnaire set prepared by experienced specialists in the WCDMA domain. These top 10 WCDMA interview questions and answers will help engineers seeking WCDMA/UMTS jobs to crack the interview on their first try. These questions are also very useful as viva questions.

  1. What is CDMA? Explain different versions as per 3GPP releases.
  2. What is the basic difference between CDMA and GSM?
  3. Differentiate CDMA technique with respect to TDMA and FDMA.
  4. What is the difference between EV-DO and EV-DV?
  5. What is spread spectrum?
  6. What is compressed mode in WCDMA?
  7. What is the difference between QPSK and OQPSK?
  8. Explain WCDMA frame structure.
  9. What are the physical, transport, and logical channels in WCDMA? Explain the function of each.
  10. What is the function of the channelization code, scrambling code, and synchronization code?
  11. What is the difference between DSSS and FHSS?
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