MMSE Based Greedy Antenna Selection Scheme for AF MIMO Relay Systems

MmWave Amplify-and-Forward MIMO Relay Networks with Hybrid Precoding/Combining Design

In this paper, we consider the amplify-and-forward relay networks in mmWave systems and propose a hybrid precoder/combiner design approach. The phase-only RF precoding/combining matrices are first designed to support multi-stream transmission, where we compensate the phase for the eigenmodes of the channel. Then, the baseband precoders/combiners are performed to achieve the maximum mutual information. Based on the data processing inequality for the mutual information, we first jointly design the baseband source and relay nodes to maximize the mutual information before the destination baseband …

Efficient Beamforming for MIMO Relaying Broadcast Channel with Imperfect Channel Estimation

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 regularize…

采用多天线中继的 SC-FDE 系统的解码转发中继

Decode and Forward Relaying for SC-FDE Systems with a Multi-Antenna Relay

针对含多天线中继的 SC-FDE 协作系统，提出基于 MMSE 的带或不带判决反馈均衡方案，并利用强对偶性求解非凸最优功率分配。

基于MMSE的集群无蜂窝大规模MIMO网络资源分配研究

Study of MMSE-Based Resource Allocation for Clustered Cell-Free Massive MIMO Networks

本文研究下行无蜂窝大规模MIMO网络，推导了和速率闭式表达式，并提出基于MMSE的多用户调度与功率分配技术，显著提升系统性能并降低计算与信令开销。

On the design of multiple-relay cooperative MIMO networks with partial channel state information

This paper deals with the problem of jointly designing the source precoder, the relaying matrices, and the destination equalizer in a multiple-relay amplify-and-forward (AF) cooperative multiple-input multiple-output (MIMO) wireless network, when partial channel-state information (CSI) is available. Specifically, the considered approaches are based on the knowledge of instantaneous CSI of the first-hop channel matrix, whereas only statistical CSI of the second-hop channels is assumed. In such a scenario, with respect to the case when instantaneous CSI of both the first- and second-hop MIMO cha…

Randomized Greedy Sensor Selection: Leveraging Weak Submodularity

We study the problem of estimating a random process from the observations collected by a network of sensors that operate under resource constraints. When the dynamics of the process and sensor observations are described by a state-space model and the resource are unlimited, the conventional Kalman filter provides the minimum mean-square error (MMSE) estimates. However, at any given time, restrictions on the available communications bandwidth and computational capabilities and/or power impose a limitation on the number of network nodes whose observations can be used to compute the estimates. We…