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A mixed-mode analog-digital transposed 64-tap finite impulse response filter for multi-channel biomedical monitoring systems is presented. The presented architecture conducts multiplication in analog domain by taking advantage of a compact preceding multiplying-ΔΣ ADC, which is implemented by reusing the in-channel current-mode stimulating DAC. The analog domain multiplication results in a ×16.4 saving...
Nowadays, SoC uses Network on Chip (NoC) to connect its increasing number of building blocks. FPGAs, like SoCs, can use NoC to connect its increasing number of tiles, memories, DSP slices and embedded processors. But one drawback of using NoC is that increasing its router ports will affect the area, power and frequency of the system significantly. For FPGAs to benefit from the NoC approach we have...
LTE-M, which is an abbreviated version of LTE-MTC(Machine Type Communication) can be said to have a variety of applications, including a large number of heterogeneous interconnection of large-scale network equipment. One of the most prominent problems is that the machines may have a large amount of access requests in a short time, which can easily lead to network congestion. At present, the contention-based...
Cloud Radio Access Network (C-RAN) enhances the utilization of computing and radio resources by concentrating Baseband Unit (BBU) at a data center. It is essential to find a flexible way to manage the computing resource since processing power has become the majority of system power in C-RAN. The computing resource demand of users can be scaled according to the modulation bits and other parameters...
Effective Capacity (EC) indicates the maximum communication rate subject to a certain delay constraint while effective energy efficiency (EEE) denotes the ratio between EC and power consumption. In this paper, we analyze the EEE of ultra-reliable networks operating in the finite blocklength regime. We obtain a closed form approximation for the EEE in Rayleigh block fading channels as a function of...
Aggregation of location estimates from multiple services for provisioning of location information enhances the accuracy and robustness of the final location information. Recent Internet of Things (IoT)-based localization service architectures therefore envision a "manager" for selecting and invoking provisioning services and, in the later step, aggregating the received information and providing...
In this paper, an adiabatic based vernier time-to-digital converter (VTDC) is proposed. Generally, static based vernier TDC consumes more power due to two delay chain and D-flipflop. To avoid this issue an adiabatic based vernier TDC is proposed. This proposed TDC is constructed by using adiabatic inverter and D-flipflop but in classical TDC architecture consists of static based inverter and D-flipflop...
Geographical load balancing (GLB) is widely established by cloud providers, to exploit the differences in electricity price, local green energy generation, transmission delay and cost etc across geographically dispersed data centers (DCs). With GLB, a cloud provider can achieve reduction of electricity cost or/and bandwidth cost or/and delay cost. However, these objectives are not independent from...
We propose a new two-stage energy-saving scheme allocating the idle time of one ONU's transceiver to other ONUs based on downstream and upstream matching and dividing ONUs into two categories which adopt different energy-saving modes according to their traffic. The simulation results show that proposed scheme can reduce the power consumption and delay of ONUs.
Multi-Tenant Data Center (MTDC) operators can increase their profits by oversubscribing their power infrastructure. However, without an appropriate power control mechanism, oversubscription can lead to expensive unplanned service outages. We propose a new power control mechanism, LOCAP (LOCAl Price for power), as a means of 1) incentivizing tenants to reduce power use to save energy and 2) controlling...
Underwater sensor networks are bounded by data sensing, transmitting, and forwarding limitations. The transmitting of large volumes of data can require a large amount of time and power. This has led researchers to focus on the new technology of underwater computing systems, in which information is extracted under the water using embedded processors via data mining and/or data compression. In this...
Adders are basic building blocks of any processor or data path application. For the design of high performance processing units high speed adders with low power consumption is a requirement. Carry Select Adder (CSA) is known to be one of the fastest adders used in many data processing applications. In this paper, we present a new CSA architecture using Manchester carry chain(MCC) in multioutput domino...
The Internet of Things (IoT) is currently a main focus of research across disciplines. In a household IoT environment, almost all devices are connected to the internet. In the case of a smart city, most of the city homes and departments are managed through the network. One small security vulnerability is enough to take down an entire city or parts of it. Hence communications should be encrypted. Physical...
Base station (BS) sleeping operation in transient process has been widely analyzed in current studies to save cellular network energy consumption. In this paper, we propose a hysteretic BS sleeping strategy in 5G cellular network. The BS adjusts its transmitting power to adapt to the traffic load in active state, and frequently goes to sleep state and keeps sleeping until N requests assembled. When...
To relieve the traffic burden and improve the system capacity, licensed-assisted access (LAA) has been becoming a promising technology to the supplementary utilization of the unlicensed spectrum. However, due to the densification of small base stations (SBSs) and the dynamic variety of the number of Wi-Fi nodes in the overlapping areas, the licensed channel interference and the unlicensed channel...
Device-to-device (D2D) communication allows mobile devices to directly communicate with each other without infrastructures. It is considered as a promising solution to improve communication performance such as spectral efficiency and network capacity of the fifth generation (5G) wireless communication systems as well as LTE-Advanced (LTE-A) systems. It generally requires D2D discovery and data communication...
Analog to information converter (AIC) is an energy efficient acquisition system based on Compressed Sensing (CS). This paper presents a new design of an AIC architecture named CS based Non Uniform Sampler (CS-NUS) for acquiring astrophysical signals. The aim is to evaluate its potential power consumption gain against conventional Analog to Digital Converter (ADC). The basic idea behind the NUS is...
In this paper we describe a new, efficient predictive scheduling methodology for implementing computing infrastructure power savings using private clouds. Our approach, termed "QPRED," estimates the quantiles on the distribution of future machine usage so that unneeded machines may be powered down to save power. A cloud administrator sets a bound on the probability that all available machines...
Conventional dynamic element matching limits the continuous time ΣΔ ADC architecture at high speeds. This work introduces a Time-Interleaved Reference Data-Weighted-Averaging (TI-RDWA) architecture that breaks the speed limitation of the traditional DEM decoder. Time-interleaving eliminates the reference voltage settling bottleneck, enabling DWA operation at 5 GHz, while still achieving the benefits...
The design and analysis of a low power comparator that features an offset cancellation technique has been carried out in this paper. The proposed low power circuit works on a 1 GHz sampling frequency and is developed in 65nm CMOS technology. An offset cancellation technique and a switch are added to the comparator to reduce the offset and kickback noise. The comparator is implemented in a 5-bit Flash...
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