Howtosignalprocessing
- How to generate OFDM signal in Matlab?
- How is orthogonality achieved in OFDM?
- Why is FFT used in OFDM?
- What is OFDM waveform?
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 is orthogonality achieved in OFDM?
With OFDM, the subchannel frequencies are close together and overlapping but are still orthogonal, or separate, in that they are carefully chosen and modulated so that the interference between the subchannels is canceled out.
Why is FFT used in OFDM?
Using FFT algorithms provides speed enhancements for data processing for OFDM systems. This technique is being used for Digital Audio Broadcasting (DAB), Digital Video Broadcasting (DVB), Wireless Local Area Network (WLAN), Wireless Metropolitan Area Network (WMAN), Multi Band-OFDM Ultra Wide Band (MB-OFDM-UWB) etc.
What is OFDM waveform?
Design and evaluate OFDM waveforms in a wireless system
Orthogonal frequency-division multiplexing (OFDM) is a multi-carrier modulation system where data is transmitted as a combination of orthogonal narrowband signals known as subcarriers.
