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Communication Systems Engineer Interview Questions

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21 communication systems engineer interview questions shared by candidates

? Tell me about yourself? ? Explain your project work during MTech. ? Block diagram of communication system (and explain each and every block) ? Types of channel coding and source coding (Only types, No detailed info) ? Digital Communication basics- What is QPSK ?? What is PSK ?? Diff between TDMA,CDMA,FDMA?? ? Puzzles are common like (3 bulb and 1 switch ) or (Min number of comparisons) or (3 ants at corner at equilateral triangle . Find out probability of collision??) ?And few programming puzzles
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Systems Test Engineer (LTE/Communication Systems)

Interviewed at Qualcomm

3.8★
Dec 16, 2015

? Tell me about yourself? ? Explain your project work during MTech. ? Block diagram of communication system (and explain each and every block) ? Types of channel coding and source coding (Only types, No detailed info) ? Digital Communication basics- What is QPSK ?? What is PSK ?? Diff between TDMA,CDMA,FDMA?? ? Puzzles are common like (3 bulb and 1 switch ) or (Min number of comparisons) or (3 ants at corner at equilateral triangle . Find out probability of collision??) ?And few programming puzzles

In written test- 1) Given QPSK constellation diagram, it has an I-Q imbalance.Q component has +0.5 dB imbalance in magnitude and I component has 0 degree phase imbalance.How will the resulting constellation look? 2) Given a frequency response if we apply kaiser window what are the output coefficients? In Interview- Few basic questions like what is correlation? mathematical formula? If there is frequency offset how will the constellation look like? Difference between correlation and convolution? etc
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Communication Systems Engineer Internship

Interviewed at MaxLinear

3.2★
Jul 13, 2016

In written test- 1) Given QPSK constellation diagram, it has an I-Q imbalance.Q component has +0.5 dB imbalance in magnitude and I component has 0 degree phase imbalance.How will the resulting constellation look? 2) Given a frequency response if we apply kaiser window what are the output coefficients? In Interview- Few basic questions like what is correlation? mathematical formula? If there is frequency offset how will the constellation look like? Difference between correlation and convolution? etc

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