The number of secure data streams a relay-assisted interference channel can support has been an intriguing problem. The problem is not solved even for a fundamental scenario with a single antenna at each transmitter, receiver and relay. In this paper, we study the achievable secure degrees of freedom of instantaneous relay-assisted interference channels with real and complex coefficients. The study of secure degrees of freedom with complex coefficients is not a trivial multiuser extension of the scenarios with real channel coefficients as in the case for the degrees of freedom, due to secrecy constraints. We tackle this challenge by jointly designing the improper transmit signals and widely-linear relay processing strategies.
| Identifer | oai:union.ndltd.org:DRESDEN/oai:qucosa:de:qucosa:27310 |
| Date | January 2013 |
| Creators | Ho, Zuleita K.-M., Jorswieck, Eduard |
| Publisher | Technische Universität Dresden |
| Source Sets | Hochschulschriftenserver (HSSS) der SLUB Dresden |
| Language | English |
| Detected Language | English |
| Type | doc-type:conferenceObject, info:eu-repo/semantics/conferenceObject, doc-type:Text |
| Source | IEEE International Workshop on Signal Processing Advances for Wireless Communications (SPAWC 2013), pp. 684-688, ISSN: 1948-3244, 2013 June 16-19. |
| Rights | info:eu-repo/semantics/openAccess |
| Relation | 10.1109/SPAWC.2013.6612137 |
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