Network‐coding‐based multisource multirelay LDPC‐coded cooperative MIMO

This paper investigates a network-coding-based multisource multirelay low-density parity-check coded cooperative multiple-input multiple-output scheme, where multiple receiving antennas are applied in the destination. Each relay cooperates with multiple sources via network coding. A joint iterative decoding is effectively carried out in the destination. The decoding algorithm agrees with the introduced equivalent joint Tanner graph that can be used to fully characterise low-density parity-check codes employed by the sources and relays. The outage probability of the network-coding-based coded cooperative multiple-input multiple-output scheme over Rayleigh fading channels is analysed, when maximal-ratio combining is adopted in the destination. Theoretical analysis and numerical simulations show that the investigated scheme can well combine cooperation diversity, multireceive diversity and channel coding gains, and clearly outperforms the coded noncooperation scheme under the same conditions. Copyright © 2013 John Wiley & Sons, Ltd.

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