EURASIP Journal on Advances in Signal Processing
IEEE Transactions on Wireless Communications
Hard/Soft detection with limited CSI for multi-hop systems
IEEE Transactions on Wireless Communications
Differential distributed cayley space-time codes
IEEE Transactions on Wireless Communications
Impact of imperfect channel estimation on the performance of amplify-and-forward relaying
IEEE Transactions on Wireless Communications
High-rate, multisymbol-decodable STBCs from Clifford algebras
IEEE Transactions on Information Theory
Distributed differential space-time codes based on Weyl's reciprocity
ISIT'09 Proceedings of the 2009 IEEE international conference on Symposium on Information Theory - Volume 4
Optimization of power constrained multi-source uplink relay networks
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
A novel power allocation scheme for distributed space-time coding
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Multigroup ML decodable collocated and distributed space-time block codes
IEEE Transactions on Information Theory
Distributed Space-Time Codes Using Constellation Rotation
Wireless Personal Communications: An International Journal
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Distributed space-time coding is a mean of achieving diversity through cooperative communication in a wireless relay network. In this paper, we consider a transmission protocol that follows a two-stage model: transmission from source to relays in the first stage, followed by a simple relaying technique from relays to destination. The relays transmit a vector which is a transformation of the received vector by a relay-specific unitary transformation. We assume that the relays do not have any channel information, while the destination has only a partial-channel knowledge, by which we mean that destination knows only the relay-to-destination channel. For such a setup, we derive a Chernoff bound on the pairwise error probability and propose code design criteria. A second contribution is the differential encoding and decoding scheme for this setup, which is different from the existing ones. Furthermore, differential codes from cyclic division algebra are proposed that achieve full diversity. For our setup with two relays, a Generalized PSK code is shown to achieve full diversity, for which the decoding complexity is independent of code size