Fig. 11
The detection threshold of CE-OFDM RadCom system for different MQAM and 2πh. Detailed legend: the lines with the plus sign, cross, circle, and square represent 2QAM, QPSK, 16QAM, and 64QAM being used to produce reference signals, respectively. The dotted line represents the AWGN used for producing reference signals. In Fig. 11, the threshold value means the setting threshold for 0.001 false alarm probability and 0 dB SNR