Ofdm

OFDM Simulation process

OFDM Simulation process
  1. What is OFDM and how it works?
  2. How is OFDM generated?
  3. How to generate OFDM signal in Matlab?
  4. How to generate OFDM signal?

What is OFDM and how it works?

Orthogonal frequency-division multiplexing is a method of data transmission where a single information stream is split among several closely spaced narrowband subchannel frequencies instead of a single Wideband channel frequency.

How is OFDM generated?

In OFDM the signal itself is first split into independent channels, modulated by data and then re-multiplexed to create the OFDM carrier. OFDM is a special case of Frequency Division Multiplex (FDM). As an analogy, a FDM channel is like water flow out of a faucet, in contrast the OFDM signal is like a shower.

How to generate OFDM signal in Matlab?

waveform = hMod( insignal ) applies OFDM modulation the specified baseband signal and returns the modulated OFDM baseband signal. waveform = hMod( data , pilot ) assigns the pilot signal, pilot , into the frequency subcarriers specified by the PilotCarrierIndices property value of the hMod system object.

How to generate OFDM signal?

Generate OFDM Modulated Waveform for Extended Cyclic Prefix

Generate a waveform by performing OFDM modulation of a resource array that contains physical downlink shared channel (PDSCH) demodulation reference signal (DM-RS) symbols. Set carrier configuration parameters, specifying a subcarrier spacing of 60 kHz.

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