Table 9 MSE values of the received image without RSA encryption, using 16-QAM modulation and different subcarriers mapping methods
From: Secure image transmission through LTE wireless communications systems
SNR [dB] | DFT-OFDMA | DCT-OFDMA | DST-OFDMA | |||
|---|---|---|---|---|---|---|
DFT-LOFDMA | DFT-IOFDMA | DCT-LOFDMA | DCT-IOFDMA | DST-LOFDMA | DST-IOFDMA | |
0 | 0.1563 | 0.1611 | 0.1096 | 0.1409 | 0.1601 | 0.1619 |
5 | 0.1092 | 0.1378 | 0.0421 | 0.0688 | 0.1164 | 0.1416 |
10 | 0.0487 | 0.0655 | 0.0146 | 0.0186 | 0.0551 | 0.0705 |
15 | 0.0158 | 0.0169 | 0.0039 | 0.0023 | 0.0183 | 0.0208 |
20 | 0.0032 | 0.0025 | 6.1035e−04 | 1.8311e−04 | 0.0032 | 0.0028 |
25 | 7.4768e−04 | 1.5259e−04 | 3.0518e−05 | 0 | 4.4250e−04 | 1.3733e−04 |
30 | 9.1553e−05 | 0 | 0 | 0 | 9.1125e−05 | 1.5259e−05 |
35 | 0 | 0 | 0 | 0 | 0 | 0 |