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Novel Distributed Space-Time Trellis Codes for Relay Systems over Cascaded Rayleigh Fading

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3 Author(s)
Ilhan, H. ; Dept. of Electron. & Commun. Eng., Istanbul Tech. Univ., Istanbul, Turkey ; Altunbas, I. ; Uysal, M.

In this letter, we consider the deployment of distributed space-time trellis codes (STTCs) for user cooperation. We derive a pairwise error probability (PEP) expression for distributed STTCs over cascaded Rayleigh fading channels. Using the derived PEP expression, we determine a code design criterion and propose novel 4-/8-/16-state 4-PSK and 8-/16-state 8-PSK distributed STTCs through a systematic code search. We confirm the superiority of the proposed codes through extensive Monte-Carlo simulations.

Published in:

Communications Letters, IEEE  (Volume:14 ,  Issue: 12 )