论文标题
通过不完美的频道估计
Efficient Beamforming for MIMO Relaying Broadcast Channel with Imperfect Channel Estimation
论文作者
论文摘要
我们考虑在下行链路网络中的多输入多输出（MIMO）继电器板通道，在该网络中，基站和继电器站都配备了多个天线，每个用户终端都只有一个天线。在实际情况下，接收器的频道估计是不完美的。为了最大程度地利用每个用户的SINR，我们分别为单个继电器案例和多雷利案例开发了两个可靠的线性光束成型方案。提出的两个方案基于Sigular值分解（SVD），最小均方根误差（MMSE）和正则化零式（RZF）。仿真结果表明，所提出的方案的表现优于常规方案，并具有不完美的通道估计。
We consider a multiple-input multiple-output (MIMO) relaying boardcast channel in downlink cellular networks, where the base station and the relay stations are both equipped with multiple antennas, and each user terminal has only a single antenna. In practical scenarios, channel estimation is imperfect at the receivers. Aiming at maximizing the SINR at each user, we develop two robust linear beamforming schemes respectively for the single relay case and the multi-relay case. The two proposed schemes are based on sigular value decomposition (SVD), minimum mean square error (MMSE) and regularized zero-forcing (RZF). Simulation results show that the proposed scheme outperforms the conventional schemes with imperfect channel estimation.
