When a user’s moving, the user’s velocity causes shift in frequency. This is called as(a) Doppler shift(b) Frequency shift(c) Velocity shift(d) None of the mentionedI got this question during an interview for a job.I'm obligated to ask this question of Signal Time Spreading topic in division Fading Channels of Digital Communications

When a user’s moving, the user’s velocity causes shift in frequenc

1.	When a user’s moving, the user’s velocity causes shift in frequency. This is called as(a) Doppler shift(b) Frequency shift(c) Velocity shift(d) None of the mentionedI got this question during an interview for a job.I'm obligated to ask this question of Signal Time Spreading topic in division Fading Channels of Digital Communications
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