In this paper, precoder designs are proposed for the wireless X networks aided by a relay
and with no or very limited channel state information at the transmitters (CSIT). First, we …

We present an efficient codebook for co-operative multiple-input multiple-output systems that
use decode-and-forward relay. To achieve full diversity gain, the channel state information …

We investigate the symmetric degrees of freedom (DoF) of the K-pair (2K users) two-way
relay Multiple-Input Multiple-Output (MIMO) Gaussian interference channel for K= 2, 3 where …

Two-way relaying is a promising scheme to achieve the ubiquitous mobile access to a
reliable high data rate service, which is targeted for future mobile communication systems. In …

This paper considers both one-way and two-way relaying systems with multiple relays
between two terminal nodes where all nodes have multiple-input multiple-output (MIMO) …

We consider a K-user multiple-input multiple-output (MIMO) relay channel, where each user
sends K-1 independent messages to the other K-1 users via a common relay. All users and …

In this paper, we study time-varying channel estimation and optimal pilot design for multiple-
input multiple-output two-way multi-relay systems in the sense of minimizing the total …

We investigate efficient communications over MIMO two-way relay channels (TWRCs) of n
T<; n R, where n T denotes the number of antennas at each user and n R denotes that at the …

In multiple-input-multiple-output (MIMO) transmission, precoding has been considered a
promising technique to improve the system performance. In general, the criterion of precoder …

Two-way relaying has demonstrated significant gain in spectral efficiency by applying
network coding when a pair of source nodes exchange information via a relay node. This …