论文标题
继电器波束形成设计，具有SIC检测，用于MIMO多Relay网络与不完美的CSI
Relay Beamforming Design with SIC Detection for MIMO Multi-Relay Networks with Imperfect CSI
论文作者
论文摘要
在本文中，我们考虑了双跳多输入多重输出（MIMO）无线多雷网络，其中一对配备了多个天线的源用途对通过多个半双链扩增和前向（AF）接力端子进行通信，这些终端也与多个天线。由于在实用的多雷网络中很难获得完美的频道状态信息（CSI），因此我们考虑所有通道的CSI不完美。我们专注于最大化目的地的信噪比噪声比率（SINR）。我们根据目标节点的QR分解过滤器在继电器上提出了一种新型的鲁棒线性光束，该QR分解过滤器执行连续的干扰取消（SIC）。使用大量定律，我们在存在不完美的CSI的情况下获得了渐近率，在其上，优化了所提出的继电器光束形成。仿真结果表明，渐近率与梯形速率匹配。分析和仿真结果表明，所提出的波束成形优于CSI误差和SNR区域的任何功率的常规光束成立方案。
In this paper, we consider a dual-hop Multiple Input Multiple Output (MIMO) wireless multi-relay network, in which a source-destination pair both equipped with multiple antennas communicates through multiple half-duplex amplify-and-forward (AF) relay terminals which are also with multiple antennas. Since perfect channel state information (CSI) is difficult to obtain in practical multi-relay network, we consider imperfect CSI for all channels. We focus on maximizing the signal-to-interference-plus-noise ratio (SINR) at the destination. We propose a novel robust linear beamforming at the relays, based on the QR decomposition filter at the destination node which performs successive interference cancellation (SIC). Using Law of Large Number, we obtain the asymptotic rate in the presence of imperfect CSI, upon which, the proposed relay beamforming is optimized. Simulation results show that the asymptotic rate matches with the ergodic rate well. Analysis and simulation results demonstrate that the proposed beamforming outperforms the conventional beamforming schemes for any power of CSI errors and SNR regions.
