Aligned Space Time Block Codes for the 2-User X Channel with Secrecy Constraints
Interference alignment (IA) is a technique used to reduce the dimension of the interference, where consequently the multiplexing rate is increased. In the 2-user X channel, combining IA with space-time block codes increases the diversity gain. These gains are achieved with the cost of leaked informa...
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| Format: | Article |
| Language: | English |
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Wiley
2015-01-01
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| Series: | International Journal of Antennas and Propagation |
| Online Access: | http://dx.doi.org/10.1155/2015/594791 |
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| author | Manar Mohaisen |
| author_facet | Manar Mohaisen |
| author_sort | Manar Mohaisen |
| collection | DOAJ |
| description | Interference alignment (IA) is a technique used to reduce the dimension of the interference, where consequently the multiplexing rate is increased. In the 2-user X channel, combining IA with space-time block codes increases the diversity gain. These gains are achieved with the cost of leaked information at unintended receivers, where this leaked information can be used to decode other receiver’s signals. In this paper, we consider each of the two two-antenna receivers as an eavesdropper with 1 or 2 additional eavesdropping antennas. As such, we suggest receiver structures to answer the question: “Is the leaked information sufficient to properly decode the unintended signals?” besides quantifying the leaked information in terms of secrecy sum rates (SSR). Interestingly, we show that the SSR is negative, indicating that the quality of the eavesdropped signals is superior to that of the intended signals. To assure confidentiality, we propose an interleaved multiple rotation-based transformation scheme that neutralizes any a priori knowledge about the structure of the eavesdropped information and rotates the transmitted symbols using orthogonal matrices, preserving both the power and the distance between symbols. |
| format | Article |
| id | doaj-art-be58b073716a4cde93fe066c333ff1e1 |
| institution | Kabale University |
| issn | 1687-5869 1687-5877 |
| language | English |
| publishDate | 2015-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Antennas and Propagation |
| spelling | doaj-art-be58b073716a4cde93fe066c333ff1e12025-02-03T07:23:53ZengWileyInternational Journal of Antennas and Propagation1687-58691687-58772015-01-01201510.1155/2015/594791594791Aligned Space Time Block Codes for the 2-User X Channel with Secrecy ConstraintsManar Mohaisen0Department of EEC Engineering, Korea Tech, Cheonan 330-708, Republic of KoreaInterference alignment (IA) is a technique used to reduce the dimension of the interference, where consequently the multiplexing rate is increased. In the 2-user X channel, combining IA with space-time block codes increases the diversity gain. These gains are achieved with the cost of leaked information at unintended receivers, where this leaked information can be used to decode other receiver’s signals. In this paper, we consider each of the two two-antenna receivers as an eavesdropper with 1 or 2 additional eavesdropping antennas. As such, we suggest receiver structures to answer the question: “Is the leaked information sufficient to properly decode the unintended signals?” besides quantifying the leaked information in terms of secrecy sum rates (SSR). Interestingly, we show that the SSR is negative, indicating that the quality of the eavesdropped signals is superior to that of the intended signals. To assure confidentiality, we propose an interleaved multiple rotation-based transformation scheme that neutralizes any a priori knowledge about the structure of the eavesdropped information and rotates the transmitted symbols using orthogonal matrices, preserving both the power and the distance between symbols.http://dx.doi.org/10.1155/2015/594791 |
| spellingShingle | Manar Mohaisen Aligned Space Time Block Codes for the 2-User X Channel with Secrecy Constraints International Journal of Antennas and Propagation |
| title | Aligned Space Time Block Codes for the 2-User X Channel with Secrecy Constraints |
| title_full | Aligned Space Time Block Codes for the 2-User X Channel with Secrecy Constraints |
| title_fullStr | Aligned Space Time Block Codes for the 2-User X Channel with Secrecy Constraints |
| title_full_unstemmed | Aligned Space Time Block Codes for the 2-User X Channel with Secrecy Constraints |
| title_short | Aligned Space Time Block Codes for the 2-User X Channel with Secrecy Constraints |
| title_sort | aligned space time block codes for the 2 user x channel with secrecy constraints |
| url | http://dx.doi.org/10.1155/2015/594791 |
| work_keys_str_mv | AT manarmohaisen alignedspacetimeblockcodesforthe2userxchannelwithsecrecyconstraints |