摘要
In this paper a low-density pairwise check(LDPC) coded three-way relay system is considered, where three user nodes desire to exchange messages with the help of one relay node. Since physical-layer network coding is applied, two time slots are sufficient for one round information exchange. In this paper, we present a decode-and-forward(DF) scheme based on joint LDPC decoding for three-way relay channels, where relay decoder partially decodes the network code rather than fully decodes all the user messages. Simulation results show that the new DF scheme considerably outperforms other common schemes in three-way relay fading channels.
In this paper a low-density pairwise check （LDPC） coded three-way relay system is considered, where three user nodes desire to exchange messages with the help of one relay node. Since physical-layer network coding is applied, two time slots are sufficient for one round information exchange. In this paper, we present a decode-and-forward （DF） scheme based on joint LDPC decoding for three-way relay channels, where relay decoder partially decodes the network code rather than fully decodes all the user messages. Simulation results show that the new DF scheme considerably outperforms other common schemes in three-way relay fading channels.
基金
supported in part by the National Natural Science Foundation of China under Grant 61201187
by the Importation and Development of High-Caliber Talents Project of Beijing Municipal Institutions under Grant YETP0110
by the Tsinghua University Initiative Scientific Research Program under Grant 20121088074
by the Foundation of Zhejiang Educational Committee under Grant Y201121579
by the Visiting Scholar Professional Development Project of Zhejiang Educational Committee under Grant FX2014052
