It is now well known that employing channel adaptive signaling in wireless communication
systems can yield large improvements in almost any performance metric. Unfortunately …

Multiple-input multiple-output (MIMO) wireless systems use antenna arrays at both the
transmitter and receiver to provide communication links with substantial diversity and …

In multiple antenna wireless systems, beamforming is a simple technique for guarding
against the negative effects of fading. Unfortunately, beamforming requires the transmitter to …

Feedback in a communications system can enable the transmitter to exploit channel
conditions and avoid interference. In the case of a multiple-input multiple-output channel …

Accurate channel state information (CSI) is essential for attaining beamforming gains in
single-user (SU) multiple-input multiple-output (MIMO) and multiplexing gains in multi-user …

This paper investigates quantization methods for feeding back the channel information
through a low-rate feedback channel in the context of multiple-input single-output (MISO) …

Massive multiple-input multiple-output (MIMO) is a promising approach for cellular
communication due to its energy efficiency and high achievable data rate. These …

The Grassmann manifold G n, p (L) is the set of all p-dimensional planes (through the origin)
in the n-dimensional Euclidean space L n, where L is either R or C. This paper considers the …

Recent works on massive multiple-input multiple-output (MIMO) have shown that a potential
breakthrough in capacity gains can be achieved by deploying a very large number of …

Employing multiple antennas at the transmitter is a well-established technique for providing
diversity advantage in wireless systems. Transmit beamforming relies on the assumption of …