Frequencies from 100 GHz to 3 THz are promising bands for the next generation of wireless
communication systems because of the wide swaths of unused and unexplored spectrum …

Coarsely quantized MIMO signalling methods have gained popularity in the recent
developments of massive MIMO as they open up opportunities for massive MIMO …

We examine the uplink spectral efficiency of a massive MIMO base station employing a one-
bit Sigma-Delta (ΣΔ) sampling scheme implemented in the spatial rather than the temporal …

We consider channel estimation for an uplink massive multiple-input multiple-output (MIMO)
system where the base station (BS) uses an array with low-resolution (1-2 bit) analog-to …

We consider channel estimation for an uplink massive multiple input multiple output (MIMO)
system where the base station (BS) uses a first-order spatial Sigma-Delta (ΣΔ) analogto …

This paper describes recent work on the topic of multi-dimensional (MD) spatio-temporal
noise and distortion shaping for radio-frequency (RF) antenna arrays with applications in …

Quantization of phase and/or amplitude has far-reaching effects on the radiation
characteristics of the phased array (PA), including gain, minor lobe level, and point …

This paper proposes multi-dimensional signal processing methods to extend Δ-Σ modulation
into the two-dimensional (2-D) space, time case. The proposed 2-D noise-shaping methods …

In massive multiple-input multiple-output (MIMO) downlink systems, the physical
implementation of the base stations (BSs) requires the use of cheap and power-efficient …

Massive MIMO using low-resolution digital-to-analog converters (DACs) at the base station
(BS) is an attractive downlink approach for reducing hardware overhead and for reducing …