Guard

Using large DFT for OFDM to avoid the guard interval

Using large DFT for OFDM to avoid the guard interval
  1. Does OFDM have guard period?
  2. How do you find the cyclic prefix length?

Does OFDM have guard period?

In OFDM, the beginning of each symbol is preceded by a guard interval. As long as the echoes fall within this interval, they will not affect the receiver's ability to safely decode the actual data, as data is only interpreted outside the guard interval.

How do you find the cyclic prefix length?

Therefore, the number of samples allocated for cyclic prefix can be calculated as Ncp=Tcp*N/T, where N is the FFT/IFFT length, T is the IFFT/FFT period and Tcp is the duration of cyclic prefix.

Histogram Main idea of Adaptive histogram equalization (AHE)
Main idea of Adaptive histogram equalization (AHE)
What does adaptive histogram equalization do?What is adaptive histogram equalization Matlab?What is the purpose of histogram stretching in image proc...
Filter Low pass filtering for smoothing
Low pass filtering for smoothing
Low pass filtering (aka smoothing), is employed to remove high spatial frequency noise from a digital image. The low-pass filters usually employ movin...
Fourier Why does varying n_fft change the range of x axis values when plotting STFT?
Why does varying n_fft change the range of x axis values when plotting STFT?
Why Short-time Fourier transform?What is a Nfft spectrogram?How to calculate Short-time Fourier transform? Why Short-time Fourier transform?7.2 Shor...