Fig. 6
From: OFDMA-based network-coded cooperation: design and implementation using software-defined radio nodes
A simplified block diagram of the destination nodes. Analog data that are coming from source and relay nodes are converted to digital data. Next, CP removal process is handled in accordance with data coming from source nodes. Then, serial-parallel conversion is implemented for the DFT block. Channel estimation and equalization are applied to DFT block’s output, in order to obtain bit sequences coming from all sources. Finally, network decoding is implemented and bit estimates are obtained