In OFDM, does $N N^H$ equal $I$?

1. What are symbols in OFDM?
2. What is OFDM symbol rate?
3. How is OFDM bandwidth calculated?
4. How do you calculate OFDM symbol duration?

What are symbols in OFDM?

Orthogonal frequency division multiplexing (OFDM) takes a digital information signal with bit rate R_b, maps n-bit words on to M = 2ⁿ symbols (each symbol being a complex number representing the amplitude and phase of an M-ary modulation scheme), splits the resulting symbol stream (rate R_s = R_b/n) into N parallel ...

What is OFDM symbol rate?

OFDM can generate a new symbol (composed of 48 subcarriers) every 4 microseconds. Based on that, it's possible to signal 250,000 symbol transitions every second on each of the subcarriers.

How is OFDM bandwidth calculated?

Thus the bandwidth of the OFDM baseband signal is N/2*delta_f,delta_f is the sub-carrier frequency spacing. The sub-carrier frequency spacing delta_f =1/Ts= 1/(Td * N), Ts is the OFDM symbol duration,Td is the sampling symbol duration and equal to the smapling time interval。 Thus Td=1/fs, fs is the DAC sampling rate.

How do you calculate OFDM symbol duration?

The duration of your ofdm symbol is Ts=Tt/(N+Ng).