Abstract
To overcome the power limitation and prolong the lifetime of the coded cooperation system, this paper proposes an energy-harvesting-based repeat-accumulate (RA)-coded cooperative multiple-input multiple-output (MIMO), where the relay is equipped with multiple antennas for information decoding and energy harvesting. Firstly, a kind of structured low-density parity-check (LDPC) codes – RA codes are introduced, and the RA codes for the source and relay are designed jointly to cancel all girth-4 cycles. Secondly, the optimal antenna selection algorithm is adopted by the relay to transmit the information. Furthermore, the outage probability and bit error rate (BER) of the system are analyzed. Theoretical analysis and numerical simulations show that the investigated system outperforms the corresponding point-to-point system under the same condition. Simulation result also demonstrates that BER performance of the system employing jointly designed RA codes is much better than that of general RA codes.
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