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Qualcomm DSP Interview Questions

21 Interview Reviews

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21 Candidate Interview Reviews Back to all interviews

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  1. 7 people found this helpful  

    Systems Engineer - Wireless DSP Engineer Interview

    Anonymous Interview Candidate in Newark, NJ
    Anonymous Interview Candidate in Newark, NJ
    Application Details

    I applied online. The process took 3 weeksinterviewed at Qualcomm in December 2013.

    Interview Details

    I first received an email informed me that I was selected for a phone interview whine 3-5 days. Next, I received an email from the interviewer. We scheduled the interview time and day and he called me on that time. Question were all technical. Among them:

    1- My current research and job
    2- What is channel coherence time and bandwidth
    3- How to perform maximum likelihood detection of QAM over AWGN and fading channel
    4- Questions on detection of MIMO-OFDM? Difference between MMSE and MLE? which one is better? and which one is optimum? How they perform In high SNR and low SNR?
    5- Questions on fixed-point implementation
    6-

    Interview Questions
    • Questions on detection of MIMO-OFDM? Difference between MMSE and MLE? which one is better? and which one is optimum? How they perform In high SNR and low SNR?
      5- Questions on fixed-point implementation
       
      Answer Question
    No Offer
    Positive Experience
    Difficult Interview
  2.  

    Audio DSP Engineer Interview

    Anonymous Interview Candidate in San Diego, CA
    Anonymous Interview Candidate in San Diego, CA
    Application Details

    I applied online – interviewed at Qualcomm.

    Interview Details

    Initial communication was through email. Phone interview was an hour long and consisted of questions about the resume. The on-site interview consisted of 6 technical interviews each about 50 minutes to an hour long.

    Interview Questions
    • Interviewers asked most of the questions from the resume. Also a few questions related to fixed point arithmetic (Q representation) were asked. Also was asked to write a program that involved bitwise operators in C.   Answer Question
    No Offer
    Positive Experience
    Difficult Interview
  3. 1 person found this helpful  

    Audio DSP Engineer Interview

    Anonymous Interview Candidate in San Diego, CA
    Anonymous Interview Candidate in San Diego, CA
    Application Details

    I applied online. The process took 2+ monthsinterviewed at Qualcomm in June 2013.

    Interview Details

    Submit my resume online, and after one week get a phone interview about one hour. Most of the phone interview are signal processing related basic questions such as how to detect the voice pitch, how to do adaptive noise reduction, filter designs, etc.
    After two weeks, get an invitation for on-site interview in San Diego. I met total 7 people including the recruiter at the first. One hour for each person. The rest of them are engineers including the manager in the group. Basic signal processing questions are asked and I feel I am doing well. One of them asked some coding problems and asked me to write the code on the blackboard. The problems are very basic such as reversing a linked list, and matrix operation, etc. However, I think I am not doing well in the coding questions, which is probably the main reason of the rejection.

    Interview Questions
    • All are basic signal processing questions, no surprisingly unexpected ones.   Answer Question
    No Offer
    Neutral Experience
    Average Interview
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  5.  

    DSP Engineer Intern Interview

    Anonymous Interview Candidate in San Diego, CA
    Anonymous Interview Candidate in San Diego, CA
    Application Details

    I applied online – interviewed at Qualcomm in April 2013.

    Interview Details

    applied online through career site. it was a phone interview for about 45 minutes. Interview went quite well. waiting for response

    Interview Questions
    No Offer
    Average Interview
  6.  

    DSP Firmware Engineer Interview

    Anonymous Interview Candidate
    Anonymous Interview Candidate
    Application Details

    I applied online. The process took 5 daysinterviewed at Qualcomm in March 2013.

    Interview Details

    I had a phone interview . I was expecting a detailed questionnaire on my projects but the interviewer started out with questions on C and then went on to ask questions related to DSP and Communications theory. The interviewer was good and was very patient in asking each question and listening to my answers.

    Interview Questions
    • Most difficult part for me were questions on C which i did not prepare at all. There were questions related to embedded systems and questions on Cache memory.   Answer Question
    No Offer
    Average Interview
  7.  

    DSP Embedded Software Engineer Interview

    Anonymous Interview Candidate
    Anonymous Interview Candidate
    Application Details

    I applied online – interviewed at Qualcomm in March 2013.

    Interview Details

    phone screen 45 mins.
    volatile
    difference bt IIR and FIR
    how to implement IIR in C (feedback)
    how to implement non-causal IIR
    how to do division in fixed point(only substraction and plus)
    matched filter
    channel equalization

    Interview Questions
    • how to do division in fixed point(only substraction and plus)
      specific grammar of how to allocate a value to an address
       
      Answer Question
    No Offer
    Average Interview
  8.  

    DSP Firmware Developer (Wireless Modem) - All Levels Interview

    Anonymous Interview Candidate
    Anonymous Interview Candidate
    Application Details

    I applied online. The process took a weekinterviewed at Qualcomm in February 2013.

    Interview Details

    Recruiter sent email to schedule a phone interview. Asked details of my project and programmed liner convolution with C

    Interview Questions
    • very detailed questions of my project and it's hard to explain it clearly by phone   Answer Question
    No Offer
    Difficult Interview
  9.  

    DSP Firmware Engineer Interview

    Anonymous Interview Candidate in Santa Clara, CA
    Anonymous Interview Candidate in Santa Clara, CA
    Application Details

    I applied online. The process took 4+ weeksinterviewed at Qualcomm in January 2013.

    Interview Details

    Applied on their career website. First was the phone interview where they asked about my projects and some basic questions. Called onsite at Santa Clara where i had 6 interviews.

    Interview Questions
    • questions were pretty simple like create a linked list of n nodes, some puzzles   Answer Question
    No Offer
    Neutral Experience
    Average Interview
  10.  

    DSP Modem Engineer Interview

    Anonymous Interview Candidate in Sunnyvale, CA
    Anonymous Interview Candidate in Sunnyvale, CA
    Application Details

    I applied online. The process took a dayinterviewed at Qualcomm in September 2011.

    Interview Details

    Group doesn't really need people but just looking for exceptionally smart people. Be very well before attending the interview.

    Interview Questions
    No Offer
    Negative Experience
    Difficult Interview
  11.  

    DSP Firmware Engineer Interview

    Anonymous Interview Candidate in San Diego, CA
    Anonymous Interview Candidate in San Diego, CA
    Application Details

    I applied through an employee referral. The process took a dayinterviewed at Qualcomm in April 2010.

    Interview Details

    I was referred by an employee and got email from the HR to set up the phone interview. After about 45 min I got the on site interview recommendation. During the phone interview I was asked a lot questions about what I was doing and and some theory algorithm associated with them. For example: How to do the channel estimation? How to implement the power control algorithm. all the technique related questions are based on the interviewer's working experience. I don't have on site interview scheduled yet. But my experience is you have to really know what your were doing and make the interviewer believes that you really did the work as you claimed.

    Interview Questions
    No Offer
    Positive Experience
    Average Interview

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