Multi-user multiple-input multiple-output theory predicts manyfold capacity gains by
leveraging many antennas on wireless base stations to serve multiple clients simultaneously …

Low-Power Wide Area Networks (LP-WANs) are an attractive emerging platform to connect
the Internet-of-things. LP-WANs enable low-cost devices with a 10-year battery to …

We present a 48-element programmable phase plate for coherent electron waves produced
by a combination of photolithography and focused ion beam. This brings the highly …

In multiuser MIMO (MU-MIMO) networks, the optimal bit rate of a user is highly dynamic and
changes from one packet to the next. This breaks traditional bit rate adaptation algorithms …

Millimeter-sized and low-cost sensor nodes can enable future applications of the Internet of
Things (IoT), for which the number of sensors is projected to grow to a trillion within the next …

Poor scalability is a long standing problem in multi-user MIMO (MU-MIMO) networks: in
order to select concurrent uplink users with strong channel orthogonality and thus high total …

Low-Power Wide-Area Network (LPWAN) is an emerging platform for Internet-of-Thing (IoT)
devices to access the base station far away. However, two of the most popular IoT …

Accurate channel state information (CSI) is essential to increasing throughput in multi-input,
multi-output (MIMO) systems with digital beamforming. CSI can be acquired by channel …

Frequently, client-side wireless devices have a view of multiple WiFi access points, whether
from open residential and commercial networks, corporate networks, or mesh networks …

In an 802.11 ac-based MU-MIMO network comprised of multiple cells1, inter-cell
interference allows only a single AP to serve its clients at the same time, significantly limiting …