DSP Modem Engineer Interview Questions | Glassdoor

# DSP Modem Engineer Interview Questions

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DSP modem engineer interview questions shared by candidates

## Top Interview Questions

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### DSP Firmware Engineer Wireless Modem at Qualcomm was asked...

Feb 14, 2010
 Given 2 32 bit numbers, how do u multiply them using 8bit multipliers? 1 AnswerLet A1A2A3A4 & B1B2B3B4 be the 32 bit numbers. (A1A2 00 + 00A3A4)*(B1B2 00 + 00B3B4) should give an idea as to implemt the 32-bit multiplication using 8 bit mult.

### DSP Firmware Engineer Wireless Modem at Qualcomm was asked...

Feb 14, 2010
 qtns abt OFDM, qtns abt cyclic prefix, qtns abt wideband channel, qtns abt block convolution: overlap save1 AnswerThese qtns where to test the DSP, Communication Theory background.

### DSP Firmware Engineer Wireless Modem at Qualcomm was asked...

Feb 14, 2010
 Given 25 red balls & 25 blue balls. Arrange them in 2 bowls such that when a ball is picked randomly from one of bowls, the probability of picking red ball is maximum?? 1 Answerput 1red ball & 0 blue balls in one bowl. The rest of the balls goes to the second bowl. The probability of picking red ball is .745

### DSP Firmware Engineer (Wireless Modem) at Qualcomm was asked...

Jan 6, 2010
 Swap two numbers without using a temporary variable3 Answersx = 10 y = 5 x = x+y // x = 15, y =5 y = x-y // x = 15 , y = 10 x = x-y // x = 15 - 10 = 5 , y = 10 another way, x = x^y y = x^y x = x^yShift register.a = a ^ b; b = a ^ b; a = a ^ b;

### DSP Modem Engineer at Qualcomm was asked...

Apr 29, 2012
 Puzzle questionsBe the first to answer this question

### DSP Modem Engineer at Qualcomm was asked...

Apr 29, 2012
 Write a program using assembly instructionsBe the first to answer this question
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