Name
Abstract | ||
|---|---|---|
The degrees of freedom (DoF) of the two-user Gaussian multiple-input and multiple-output (MIMO) broadcast channel with confidential messages is studied under the assumption that delayed channel state information (CSI) is available at the transmitter. We characterize the optimal secrecy DoF (SDoF) region and show that it can be achieved by a simple artificial noise alignment scheme. The proposed scheme sends the confidential messages superposed with the artificial noise over several time slots. Exploiting delayed CSI, the transmitter aligns the transmit signal in such a way that the useful message can be extracted at the intended receiver but is completely drowned by the artificial noise at the unintended receiver. The proposed scheme can be regarded as a nontrivial extension of Maddah-Ali Tse scheme and enables us to quantify the resource overhead, or equivalently the DoF loss, to be paid for the secure communications. |
Year | DOI | Venue |
|---|---|---|
2013 | 10.1109/TIT.2013.2266924 | IEEE Transactions on Information Theory |
Keywords | DocType | Volume |
physical-layer security,channel state information,secrecy degrees-of-freedom,sdof region,delayed csit,interference alignment,dof loss,confidential message,mimo communication,wiretap channel,broadband networks,multiple-antenna channels,gaussian multiple-input-multiple-output channel,channel allocation,secure communication,gaussian channels,delayed channel state information,mimo broadcast channel,maddah-ali tse scheme,telecommunication security,optimal secrecy dof,gaussian broadcast channels,artificial noise alignment scheme | Journal | 59 |
Issue | ISSN | Citations |
9 | 0018-9448 | 30 |
PageRank | References | Authors |
1.02 | 13 | 4 |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Sheng Yang | 1 | 286 | 33.29 |
| Mari Kobayashi | 2 | 123 | 10.13 |
| Pablo Piantanida | 3 | 389 | 55.41 |
| Shlomo Shamai | 4 | 4531 | 410.89 |