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IEEE TRANSACTIONS ON COMMUNICATIONS, VOL. 59, NO. 6, JUNE 2011 1707 Coherent Versus Non-Coherent
 

Summary: IEEE TRANSACTIONS ON COMMUNICATIONS, VOL. 59, NO. 6, JUNE 2011 1707
Coherent Versus Non-Coherent
Decode-and-Forward Relaying Aided
Cooperative Space-Time Shift Keying
Shinya Sugiura, Member, IEEE, Sheng Chen, Fellow, IEEE, Harald Haas, Member, IEEE,
Peter M. Grant, Fellow, IEEE, and Lajos Hanzo, Fellow, IEEE
Abstract--Motivated by the recent concept of Space-Time
Shift Keying (STSK), we propose a novel cooperative STSK
family, which is capable of achieving a flexible rate-diversity
tradeoff, in the context of cooperative space-time transmissions.
More specifically, we first propose a Coherent cooperative STSK
(CSTSK) scheme, where each Relay Node (RN) activates Decode-
and-Forward (DF) transmissions, depending on the success or
failure of Cyclic Redundancy Checking (CRC). We invoke a bit-
to-STSK mapping rule, where according to the input bits, one
of the pre-assigned dispersion vectors is activated to implicitly
convey log2 bits, which are transmitted in combination with the
classic log2 -bit modulated symbol. Additionally, we introduce a
beneficial dispersion vector design, which enables us to dispense
with symbol-level Inter-Relay Synchronization (IRS). Further-

  

Source: Anderson, Jim - School of Mathematics, University of Southampton
Chen, Sheng - School of Electronics and Computer Science, University of Southampton

 

Collections: Engineering; Mathematics