Table 7 MSE values of the received image without 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 | 0.1149 | 0.1300 | 0.0066 | 0.0082 | 0.1160 | 0.1302 |
5 | 0.0648 | 0.0640 | 0.0020 | 0.0024 | 0.0642 | 0.0651 |
10 | 0.0240 | 0.0157 | 4.6777e−04 | 5.2807e−04 | 0.0196 | 0.0151 |
15 | 0.0059 | 0.0016 | 8.6958e−05 | 9.1553e−05 | 0.0033 | 0.0017 |
20 | 0.0012 | 1.3080e−04 | 0 | 0 | 3.2954e−04 | 7.0627e−05 |
25 | 7.5187e−05 | 1.2338e−05 | 0 | 0 | 0 | 0 |
30 | 0 | 0 | 0 | 0 | 0 | 0 |
35 | 0 | 0 | 0 | 0 | 0 | 0 |