Ofdm

OFDM signal in time and frequency domain and its PSD

OFDM signal in time and frequency domain and its PSD
  1. What does FFT do in OFDM?
  2. How many OFDM symbols are there?

What does FFT do in OFDM?

Implementation of OFDM deals with application of Fast Fourier Transform (FFT) to modulation and demodulation processes to generate carriers orthogonal to each other. In conventional system, IFFT (Inverse Fast Fourier Transform) is used at transmitter side and FFT is used in receiver side.

How many OFDM symbols are there?

The number of OFDM symbols per slot is 14 for a configuration using normal cyclic prefix. For extended cyclic prefix, the number of OFDM symbols per slot is 12.

Sampling What the sampling rate should be for passband and baseband signals?
What the sampling rate should be for passband and baseband signals?
What is the sampling rate of bandpass sampling?What is a suitable sampling rate?What is the minimum sampling rate for the signal? What is the sampli...
Signal Reconstructing an undersampled signal by cutting off at the signal's maximum frequency
Reconstructing an undersampled signal by cutting off at the signal's maximum frequency
How do you reconstruct a signal from its samples?What is the minimum sample frequency needed to reconstruct an analog signal?What happens if sampling...
Filter Why odd-order Butterworth filters don't behave the same as even-order in crossovers?
Why odd-order Butterworth filters don't behave the same as even-order in crossovers?
What is the limitation of Butterworth filter?What happens when you increase the order of a Butterworth filter?How the order of the filter affects the...