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首页> 外文会议>International Conference on Renewable Energies for Developing Countries >Pareto Boundary for Massive-MIMO-Relay-Assisted Interference Networks: Half-duplex vs. Full-duplex Processing
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Pareto Boundary for Massive-MIMO-Relay-Assisted Interference Networks: Half-duplex vs. Full-duplex Processing

机译：大规模MIMO中继辅助干扰网络的帕累托边界：半双工与全双工处理

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摘要

Due to the absence or insufficient strength of the direct links between communication pairs, relay-assisted communication is inevitable in communication networks. One important class of such networks is the interference relay channel, whose Pareto boundary of the achievable rate region is investigated in this paper. The relay is equipped with multiple antennas for transmission and reception while the source and destination nodes have a single antenna each. Due to relatively high strength of the relay links compared to the direct links, the destinations decode the relay signals while the other receiving signals from the sources through direct links are treated as noise (TIN). We consider both zero-forcing (ZF) and maximum ratio transmission/ combining (MRT/MRC) at the relay input and output, while the relay can either operate in half-duplex or full-duplex mode. The power is optimized in order to characterize the Pareto boundary considering these two types of beamforming strategies. We formulate the weighed max-min optimization problem which delivers the Pareto boundary. This problem turns out to be a geometric program (GP) which can be converted to a convex optimization problem and solved efficiently. We observe that, by increasing the number of transmit and receive antennas at the relay significantly, full-duplex outperforms half-duplex even at strong self-interference channels.
机译：由于通信对之间的直接链路不存在或强度不足，因此在通信网络中不可避免地要进行中继辅助通信。这种网络的重要一类是干扰中继信道，本文研究了其可达到的速率区域的帕累托边界。中继配备有用于发送和接收的多个天线，而源节点和目标节点各有一个天线。由于中继链路与直接链路相比具有较高的强度，因此目标将对中继信号进行解码，而将通过直接链路从源接收的其他信号视为噪声（TIN）。我们考虑了继电器输入和输出处的零强制（ZF）和最大比率传输/组合（MRT / MRC），而继电器可以以半双工或全双工模式运行。考虑到这两种类型的波束成形策略，优化功率以表征帕累托边界。我们制定了加权最大-最小优化问题，该问题给出了帕累托边界。事实证明，这个问题是一个几何程序（GP），可以将其转换为凸优化问题并有效解决。我们观察到，通过显着增加中继站的发送和接收天线数量，即使在强自干扰信道下，全双工也优于半双工。

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