We consider a multi-way relay network in which all source nodes share their data by the help of multiple single-antenna relay nodes. To mitigate a loss in the spectral efficiency, the network employs a pairwise digital network coding (DNC) which pairs the source nodes for simultaneous transmission so that the relay forwards the DNC bits of the pairs. For the network, we devise a joint relay selection and power allocation (RS-PA) scheme based on an approximation on the instantaneous symbol error probability incorporating error propagations. Simulation results show that the network with the proposed RS-PA outperforms the conventional network with the RS only with a larger gain with a larger number of relays.
Joint relay selection and power allocation for pairwise multi-way relay networks
2014-11-01
380903 byte
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
Power Allocation and Relay Selection for Multisource Multirelay Cooperative Vehicular Networks
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