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Deve
  • Member for 10 years
  • Last seen more than a week ago
21 votes
Accepted

Difference between discrete time fourier transform and discrete fourier transform

15 votes

Symmetry of real and imaginary parts in FFT

15 votes

FFT of sine wave not coming as expected i.e single point

11 votes
Accepted

What is the difference between Lumped and Distributed systems?

9 votes

how do I calculate SNR of noisy signal?

9 votes

How is symbol synchronization with OFDM done?

8 votes
Accepted

How does averaging increase the Signal to Noise ratio?

8 votes
Accepted

Why is `fftfilt` (i.e. `fft` of both inputs, then element-wise multiplication, then `ifft`) faster than direct convolution?

8 votes

Why not use zero-signal in digital transmission?

8 votes

Is $x(t) = \cos t + \sin\left(\frac{1}{2}t\right)$ a periodic signal?

8 votes

Fourier Transform Identities

7 votes

Nyquist Frequency Phase Shift

6 votes
Accepted

Finding out modulation index and DC offset

5 votes
Accepted

FPS to Hertz in a camera

5 votes
Accepted

What can we deduce about variance when we are given the noise spectral density?

5 votes

Hermitian symmetry in OFDM systems

5 votes
Accepted

Alamouti code after or before IFFT block in OFDM

5 votes

Number of DFT (FFT) Points Required for a Specific Frequency Resolution for an Oversampled Signal

5 votes

Number of samples in one period of subcarrier after IFFT

4 votes
Accepted

What type of correlation is this equation?

4 votes
Accepted

Is it possible to transmit and/or receive multiple types of signals at the same time?

4 votes
Accepted

Power spectral density and SNR for AWGN

4 votes
Accepted

Bandwidth of a communication system

4 votes

Implementing FFT in Matlab

4 votes
Accepted

Reason of Fast Fourier and Inverse Fast Fourier

3 votes

OFDM transmitter data rate

3 votes

SNR calculation confusion

3 votes
Accepted

Comparing 2 sinusoids: Discrete case vs Continuous case

3 votes
Accepted

IFFT and OFDM upconversion

3 votes
Accepted

Software-based sound card OFDM