BER Analysis of Joint Network/Channel decoding in Block Rayleigh fading channels

Xuan Thang Vu 1 Marco Di Renzo 1 Pierre Duhamel 1
1 Division Télécoms et Réseaux - L2S
L2S - Laboratoire des signaux et systèmes : 1289
Abstract : This paper studies the four-node Multiple Access Relay Channel (MARC) under quasi-static block Rayleigh fading channels and Gaussian noise environment. A relay employs Demodulate-and-Forward (DMF) protocol in order to help two channel-encoded sources to communicate with a destination. The contributions of the paper are threefold: i) we propose a Near Optimal Joint Network/Channel decoding (NO-JNCD) algorithm at the destination. The NO-JNCD employs Cooperative Maximum Ratio Combining (C-MRC) detector and the BCJR algorithm applied to a compound code which trellis consists of all possible states of two single trellises at sources; ii) we compute extended distance spectrum of the compound code containing input weights for each source and output weights on each fading channel; and iii) from the extended distance spectrum, we derive the Bit Error Rate (BER) upper bound for the compound code as well as for each source. It is shown by simulation that the proposed decoder provides performance very close to that of the optimal JNCD with both DMF and Decode-and-Forward (DF) relaying protocols. Finally, the analysis is checked by simulation.
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Submitted on : Friday, June 28, 2013 - 1:48:36 PM
Last modification on : Monday, June 24, 2019 - 2:36:14 PM

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Xuan Thang Vu, Marco Di Renzo, Pierre Duhamel. BER Analysis of Joint Network/Channel decoding in Block Rayleigh fading channels. 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC), Sep 2013, Londres, United Kingdom. pp.1-5, ⟨10.1109/pimrc.2013.6666226 ⟩. ⟨hal-00839529⟩



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