| Hybrid underlay/overlay cognitive radio system with hierarchical modulation in the presence of channel estimation error | 4 | 0.41 | 2014 |
| Secret key generation based on channel and distance measurements | 1 | 0.35 | 2014 |
| Non-data-aided SNR estimation for QPSK modulation in AWGN channel | 2 | 0.55 | 2014 |
| Cognitive relay-sharing by using hierarchical modulation under interference constraints | 2 | 0.38 | 2014 |
