The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
In this paper, we study the problem of using representation learning to assist information diffusion prediction on graphs. In particular, we aim at estimating the probability of an inactive node to be activated next in a cascade. Despite the success of recent deep learning methods for diffusion, we find that they often underexplore the cascade structure. We consider a cascade as not merely a sequence...
This paper presents a 1/4-rate PAM4 receiver employing a sampling decoder with an adaptive variable-gain rectifier (AVGR) to achieve a bit efficiency of 1.38 pJ/bit. By concurrently performing gain adaptation and amplitude rectification for decoding the least significant bit (LSB), the proposed decoder greatly reduces power consumption compared with the conventional full-rate topology using three...
This paper presents a new magnetic coupler design that interconnects the plug-in isolated topologies with the Inductive Power Transfer (IPT) technology for onboard Electric Vehicles (EVs) batteries charging systems. The proposed design acts as an isolation transformer during the charge in plug-in mode, and as a conventional magnetic coupler in IPT charging mode. In this way, the system requires only...
The LoRa technology has emerged as an interesting solution for low power, long range loT applications by proposing multiple “degrees of freedom” at the physical layer. This flexibility provides either a long range at the cost of a lower data rate or higher throughput at the cost of low sensitivity, so a shorter range. In this paper, we analyze the flexibility of LoRa and propose various strategies...
Achieving large low-frequency gain together with low noise and a high unity-gain bandwidth (UGB) imposes conflicting requirement on bias currents in single stage operational transconductance amplifiers (OTA). In this work, we propose a modified biasing scheme for folded cascode OTAs to de-couple the gain versus noise/UGB trade-off. The effectiveness of proposed biasing scheme is illustrated with the...
This work demonstrates a multi-Mode CT ΔΣ ADC in 14nm FinFET Intel Technology. The proposed converter makes use of a novel 5-bit partial DEM technique at 1.25GHz that, in conjunction with an offset current dumping solution, drastically reduces current and area. The ADC reaches a measured DR of 73/71 dB while consuming 8/12 mW for the 9/50 MHz BW modes, respectively.
Failing to make use of multi-path advantages in data center networks (DCNs) has confined accessible resources and increased the possibility of congestion. In this paper, we have presented a new algorithm for traffic engineering (TE) in a modular mode. In the proposed algorithm, the less loaded paths for conduction of current are selected with regard to the present conditions as soon as a current is...
This paper presents an overview of the design considerations and challenges of event-driven wakeup receivers as well as an analysis of state-of-the-art (SOA) research. We consider advantages and disadvantages of the commonly utilized architectures in these systems as well as presenting big picture perspectives from an application standpoint. This paper focuses on event-driven scenarios where the activity...
Wireless power transfer (WPT) system has been introduced to many applications. However, it allows very limited misalignment of the power receiver relative to the power transmitter, which is not suitable for some applications such as electric vehicle (EV) wireless charging. This paper presents methods to improve output stability over large misalignment from the perspective of compensation topology...
In this paper, a new area-effective complex-filter topology which can be used as an image-reject filter in low-IF receiver is proposed. A first-order image-reject filter obtained according to a new topology which corresponds to a complex shunt RC circuit. To demonstrate the usefulness of filter, simulation results of the filter are obtained by using SPECTRE in the CADENCE design tool.
The goal of this paper is two-fold. First, to expand an opportunistic network coding protocol for wireless networks, called PlayNCool, in order to incorporate new mechanisms to improve performance in the presence of packet losses. In particular, exploiting additional helper nodes to improve the quality of each link and even across neighbouring links and using simulations to show that an additional...
Two channels are said to be equivalent if they are degraded from each other. The space of equivalent channels with input alphabet X and output alphabet Y can be naturally endowed with the quotient of the Euclidean topology by the equivalence relation. We show that this topology is compact, path-connected and metrizable. A topology on the space of equivalent channels with fixed input alphabet X and...
We derive inner and outer bounds on the capacity region for a class of three-user partially connected interference channels. We focus on the impact of topology, interference alignment, and interplay between interference and noise. The representative channels we consider are the ones that have clear interference alignment gain. For these channels, Z-channel type outer bounds are tight to within a constant...
This work explores cache-aided interference management in the absence of channel state information at the transmitters (CSIT), focusing on the setting with K transmitter/receiver pairs endowed with caches, where each receiver k is connected to transmitter k via a direct link with normalized capacity 1, and to any other transmitter via a cross link with normalized capacity t ≤ 1. In this setting, we...
Based on the Cockcroft-Walton (CW) voltage multiplier, a novel receiver topology for IPT (Inductive Power Transfer) system is proposed. The proposed receiver topology enhances the efficiency of the IPT system through achieving that the induced secondary voltage and current are in-phase with the appropriate control method. This paper carried on the modeling of the receiver topology, and deduced the...
This work presents the design and experimental results of a current mode Scalable Low-Voltage Signaling (SLVS) transceiver in 130 nm CMOS technology. The proposed transmitter includes a feedback control which reduces the common-mode voltage variations in terms of the Vds voltage of the bias transistor, and an enable/disable operation mode, which minimizes the power consumption when data transmission...
In this work, we focus on the partially connected interference network with confidential messages, and study the secure degrees of freedom with no channel state information at the transmitters (CSIT). Prior works on fully connected interference networks with full CSIT have shown that the secure degrees of freedom scales linearly with the number of users. With no CSIT, however, the secure degrees of...
To achieve scalable performance, datacenter applications (e.g., search and social networking) are designed to have high fanout. However, such a design leads to frequent fabric congestion (e.g., due to incast, imperfect hashing) even when the utilization is low. Such fabric congestion exhibits spatial (e.g., within a rack and across racks) as well as temporal variations. Unfortunately, current approaches...
As the power demand for some railway applications rises up to the Megawatt level, the conventional Wireless Power Transfer (WPT) system can hardly meet the power requirements for rail vehicles due to capacity constraints of power electronic devices. In order to improve the power capacity of the WPT system, a novel dual transmitters and dual receivers based WPT system is proposed. The dual transmitters...
Several data center applications such as Hadoop and OpenStack VM provisioning utilize group communication (one-to-many or many-to-many transfers). Since these applications require reliable and stable delivery, they rely on TCP for all group communications. Even though multicast lends itself naturally to these group communication patterns, it has remained largely under-deployed in the Internet owing...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.