A noise-shaped pipelined ADC is presented in this paper. A minimal complexity ΔΣ modulator in
the first two sub-ADCs and residue feedback in the latter stages lead to high-order noise shaping. This
also leads to reduced sensitivity to analog imperfections in the front-end stage. Implemented in 0.18μ m
CMOS, the...
In this paper the fundamental concept of ring
amplification is introduced and explored. Ring amplifiers enable
efficient amplification in scaled environments, and possess the
benefits of efficient slew-based charging, rapid stabilization,
compression-immunity (inherent rail-to-rail output swing),
and performance that scales with process technology. A basic
operational theory is established, and...
Identifying coherent sub-graphs in networks is important
in many applications. In power systems, large systems
are divided into areas and zones to aid in planning and control
applications. But not every partitioning is equally good for
all applications; different applications have different goals, or
attributes, against which solutions should be...
This paper provides a cross-layer analysis of uplink performance in femtocell networks. It characterizes the uplink physical
interference in femtocell networks and studies its impact on the delay and data loss rate of constant-bit-rate (CBR) traffic, as well
as on the maximum achievable femto-user throughput. Our work derives data-link layer...
The range of verification problems that can be solved with logic model checking tools has increased significantly in the last few decades. This increase in capability is based on algorithmic advances and new theoretical insights, but it has also benefitted from the steady increase in processing speeds and main memory...
A long-standing approach to deal with complex product development is to divide the system into smaller parts
and assign responsibility for developing those parts to particular teams. Conventional wisdom suggests that by
doing so, we reduce the communication overhead in the development project by making the separate
development teams as...
Software-Defined Networking (SDN) is a new networking
paradigm that decouples the forwarding and control planes—
traditionally being coupled with one another—while adopting a
logically centralized architecture aiming to increase network agility
and programability. While many efforts are currently being made
to standardize this emerging paradigm, careful attentions need to
be...
Data attacks on state estimation modify part of system
measurements such that the tempered measurements cause
incorrect system state estimates. Attack techniques proposed
in the literature often require detailed knowledge of system
parameters. Such information is difficult to acquire in practice.
The subspace methods presented in this paper, on the...
Micro Aerial Vehicles (MAVs) are notoriously
difficult to control as they are light, susceptible to minor
fluctuations in the environment, and obey highly non-linear
dynamics. Indeed, traditional control methods, particularly
those relying on difficult to obtain models of the interaction
between an MAV and its environment have been unable
to...
Energy consumption has become a significant concern for cloud service providers due to financial as well as environmental factors. As a result, cloud service providers are seeking innovative ways that allow them to reduce the amount of energy that their data centers consume. They are calling for the development of...