Training-symbol embedded, high-rate complex orthogonal designs for relay networks

Harshan, J. ; Sundar Rajan, B. ; Hjorungnes, Are (2010) Training-symbol embedded, high-rate complex orthogonal designs for relay networks In: 2010 IEEE International Symposium on Information Theory, 13-18 Jun 2010, Austin, TX, USA.

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Official URL: http://ieeexplore.ieee.org/document/5513491/

Related URL: http://dx.doi.org/10.1109/ISIT.2010.5513491

Abstract

Distributed Space-Time Block Codes (DSTBCs) from Complex Orthogonal Designs (CODs) (both square and non-square CODs other than the Alamouti design) are known to lose their single-symbol ML decodable (SSD) property when used in two-hop wireless relay networks using the amplify and forward protocol. For such a network, a new class of high rate, training-symbol embedded (TSE) SSD DSTBCs are proposed from TSECODs. The constructed codes include the training symbols within the structure of the code which is shown to be the key point to obtain high rate along with the SSD property. TSE-CODs are shown to offer full-diversity for arbitrary complex constellations. Non-square TSE-CODs are shown to provide better rates (in symbols per channel use) compared to the known SSD DSTBCs for relay networks when the number of relays is less than 10. Importantly, the proposed DSTBCs do not contain zeros in their codewords and as a result, antennas of the relay nodes do not undergo a sequence of switch on and off transitions within every codeword use. Hence, the proposed DSTBCs eliminate the antenna switching problem.

Item Type:Conference or Workshop Item (Paper)
Source:Copyright of this article belongs to Institute of Electrical and Electronics Engineers.
ID Code:110646
Deposited On:08 Dec 2017 10:23
Last Modified:08 Dec 2017 10:23

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