A novel forwarding method for full-duplex two-way relay networks

A novel forwarding method for full-duplex two-way relay networks
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一种新的全双工双向中继网络转发方法

DOI:
10.1109/cc.2017.7927577
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发表时间:
2017-04
影响因子:
4.1
通讯作者:
Yang Liuqing
Yang Liuqing
中科院分区:
计算机科学3区
文献类型:
--
作者:
Han Shuangshuang;Cheng Xiang;Yang Liuqing

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提出并分析了一种适用于单输入单输出(SISO)和多输入多输出(MIMO)全双工双向中继网络的估计转发(EF)方案。中继器通过最小均方误差(MMSE)估计来估计来自两个终端节点的接收信号,并将MMSE估计的缩放版本转发到目的地。在所有信噪比(SNR)范围内,所提出的EF都优于传统的放大转发(AF)和解码转发(DF)。针对多天线(大型MIMO)和/或高阶星座的中继器计算复杂度较高的问题,提出了一种称为LIST EF的近似EF方案来降低计算复杂度。提出的列表EF通过使用球形译码来计算MMSE估计的候选列表,并且以可以忽略的性能损失接近精确的EF中继的性能。该转发方法也可应用于其他中继网络,如半双工、单向或大规模MIMO中继网络。
An estimate-and-forward (EF) scheme for single-input single-output (SISO) and multiple-input multiple-output (MIMO) full-duplex two-way relay networks is proposed and analyzed. The relay estimates the received signal from two terminal nodes by a minimum mean squared error (MMSE) estimation and forwards a scaled version of the MMSE estimate to the destination. The proposed EF outperforms conventional amplify- and-forward (AF) and decode-and-forward (DF) across all signal-to-noise ratio (SNR) region. Because its computational complexity is high for relays with a large number of antennas (large MIMO) and/or high order constellations, an approximate EF scheme, called list EF, are thus proposed to reduce the computational complexity. The proposed list EF computes a candidate list for the MMSE estimate by using a sphere decoder, and it approaches the performance of the exact EF relay at a negligible performance loss. The proposed forwarding approach also could be used to other relay networks, such as half-duplex, one-way or massive MIMO relay networks.
具有不完善信道状态信息的多对双向中继网络的自适应鲁棒波束形成器
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