Multiple-input multiple-output (MIMO) technology is maturing and is being incorporated into
emerging wireless broadband standards like long-term evolution (LTE)[1]. For example, the …

In this paper, we study physical layer security for the downlink of cellular networks, where
the confidential messages transmitted to each mobile user can be eavesdropped by both; 1) …

Channel adaptive signaling, which is based on feedback, can result in almost any
performance metric enhancement. Unlike the radio frequency channel, the optical wireless …

In this paper, we consider the broadcast channel with confidential messages and external
eavesdroppers (BCCE), where a multi-antenna base station simultaneously communicates …

We propose a low-complexity vector precoding (VP) scheme for the downlink of multi-user
multiple input single output (MU-MISO) systems with limited feedback. Conventional VP …

In order to support the plethora of the new, pending, transformative use-cases, 6G systems
will need to be capable of providing not only high-throughput but also ultra-massive device …

In this paper, we study the performance of regularized channel inversion (RCI) precoding in
large MISO broadcast channels with confidential messages (BCC). We obtain a …

We propose a low-complexity vector perturbation (VP) precoding scheme for the downlink of
multi-user multiple input multiple output (MU-MIMO) systems. While conventional VP …

We consider the downlink of a multiuser system with multiple antennas at the base station.
Vector perturbation (VP) precoding is a promising variant of transmit-side channel inversion …

The “replica method” of statistical physics is employed for the large-system analysis of vector
precoding for the Gaussian multiple-input multiple-output broadcast channel. The transmitter …