Cooperative diversity schemes for asynchronous wireless networks
Wireless Personal Communications: An International Journal
Cyclic Division Algebras: A Tool for Space-Time Coding
Foundations and Trends in Communications and Information Theory
EURASIP Journal on Wireless Communications and Networking
IEEE Transactions on Wireless Communications
Low complexity distributed STBCs with unitary relay matrices for any number of relays
ISIT'09 Proceedings of the 2009 IEEE international conference on Symposium on Information Theory - Volume 1
Space-time codes for multiple access systems with low MMSE decoding complexity
IEEE Transactions on Wireless Communications
Multigroup ML decodable collocated and distributed space-time block codes
IEEE Transactions on Information Theory
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This paper considers an orthogonal amplify-and-forward (OAF) protocol for cooperative relay communication over Rayleigh-fading channels in which the intermediate relays are permitted to linearly transform the received signal and where the source and relays transmit for equal time durations. The diversity-multiplexing gain (D-MG) tradeoff of the equivalent space-time channel associated to this protocol is determined and a cyclic-division-algebra-based D-MG optimal code constructed. The transmission or signaling alphabet of this code is the union of the QAM constellation and a rotated version of QAM. The size of this signaling alphabet is small in comparison with prior D-MG optimal constructions in the literature and is independent of the number of participating nodes in the network