Abstract
In this paper, we study Orthogonal Frequency Division Multiplexing (OFDM) systems with cooperative coding over frequency selective Rayleigh fading channels. We derive the pairwise error probability (PEP) for the block-fading OFDM channel model. We use the derived PEP to get an upper bound on the frame error probability for the coded cooperative OFDM system. This bound is then utilized in the study of the diversity and coding gains achievable through cooperative coding in OFDM systems for various inter-user channel qualities. We consider the design of cooperative convolutional codes based on the principle of overlays and provide simulation results for different cooperation scenarios. We observe significant gains over conventional non-cooperative OFDM systems. Finally, based on some simple approximations, we provide guidelines for the choice of partners in coded cooperative OFDM systems.
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Lin, J.C.H., Stefanov, A. Cooperative Coding for OFDM Systems. Wireless Pers Commun 43, 123–139 (2007). https://doi.org/10.1007/s11277-006-9234-3
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DOI: https://doi.org/10.1007/s11277-006-9234-3