Fig. 12
From: Experimental evaluation of interference alignment for broadband WLAN systems
Median EVM with respect to the transmit delay between transmit users for both pre- and post-FFT decoding as well as the so-called “sync-aided IA post-FFT decoding” corresponding to perfect time synchronization at the receiver with post-FFT decoding (M=30, L=30, 16-QAM). The delay between the transmitters has been emulated using the perfectly synchronized received signals during the perfect IA transmission stage