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Joint Non-Binary LDPC-BICM and Network Coding with Iterative Decoding for the Multiple Access Relay Channel

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3 Author(s)
Hernaez, M. ; Dept. of Electron. & Commun., Univ. of Navarra, Donostia-San Sebastian, Spain ; Crespo, Pedro M. ; Del Ser, J.

In this paper we present a novel joint network-channel coding scheme for the time-division Multiple Access Relay Channel (MARC), which combines Bit-Interleaved Coded Modulation with iterative decoding (BICM-ID) based on non-binary Low-Density Parity Check (LDPC) codes, along with the linear combination of blocks of data at the relay. The common receiver iteratively exchanges soft information between a joint soft demapper and the LDPC decoder associated to the transmitting nodes. The performance of the proposed system is compared, in terms of Frame Error Rate (FER) and through intensive Monte Carlo simulations, with the corresponding theoretical outage rate for different values of the spectral efficiency ρs of the overall setup. Two main conclusions are drawn: small FER degradation is obtained as ρs increases; and no diversity is lost with respect to the theoretical outage rate.

Published in:

Vehicular Technology Conference (VTC Spring), 2011 IEEE 73rd

Date of Conference:

15-18 May 2011

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