Table 8 MSE values of the received image with RSA encryption, using QPSK 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 | 0.1251 | 0.1262 | 0.0185 | 0.0264 | 0.1257 | 0.1264 |
5 | 0.0999 | 0.1045 | 0.0061 | 0.0088 | 0.1005 | 0.1058 |
10 | 0.0448 | 0.0348 | 0.0016 | 0.0020 | 0.0395 | 0.0353 |
15 | 0.0095 | 0.0040 | 3.2481e−04 | 2.4414e−04 | 0.0059 | 0.0035 |
20 | 0.0014 | 3.7482e−04 | 1.2136e−05 | 5.9751e−05 | 5.9509e−04 | 1.5259e−04 |
25 | 1.3733e−04 | 4.5776e−05 | 0 | 0 | 1.5259e−05 | 1.5259e−05 |
30 | 0 | 1.0108e−05 | 0 | 0 | 0 | 0 |
35 | 0 | 0 | 0 | 0 | 0 | 0 |