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. 2024 Nov 18;26(11):994. doi: 10.3390/e26110994

Figure 1.

Figure 1

GFB-OFDM transmitter diagram. The encoded and modulated data are first divided into N subbands, with each subband undergoing a subcarrier-level IFFT. The resulting data is then processed through a subband-level IFFT along the subband dimension, followed by a polyphase filter. The output is transmitted after passing through the digital-to-analog converter and radio frequency module.