Now showing items 1-20 of 31742

    • A 0.077 to 0.168 nJ/bit/iteration Scalable 3GPP LTE Turbo Decoder with an Adaptive Sub-Block Parallel Scheme and an Embedded DVFS Engine 

      Cheng, Chih-Chi; Tsai, Yi-Min; Chen, Liang-Gee; Chandrakasan, Anantha P. (Institute of Electrical and Electronics Engineers (IEEE), 2010-09)
      3GPP LTE requires a 100 Mbps of peak bandwidth, and the instantaneous throughput demand changes with different applications. Fixed sub-block parallel turbo decoding scheme introduces bit-error rate (BER) performance drop ...
    • A 0.13[mu]m CMOS 78dB SNDR 87mW 20MHz BW CT [Delta Sigma] ADC with VCO-based integrator and quantizer 

      Park, Matthew (Institute of Electrical and Electronics Engineers, 2009-05)
      In this paper we demonstrate a new technique that eliminates the impact of K[subscript v] nonlinearity by preserving the integral relationship of the VCO output phase to the input signal. Leveraging the VCO output phase ...
    • A 0.16mm2 completely on-chip switched-capacitor DC-DC converter using digital capacitance modulation for LDO replacement in 45nm CMOS 

      Ramadass, Yogesh Kumar; Fayed, Ayman A.; Haroun, Baher; Chandrakasan, Anantha P. (Institute of Electrical and Electronic Engineers, 2010-02)
      A completely on-chip switched-capacitor DC-DC converter that occupies 0.16 mm2 [mm superscript 2] is implemented in a 45 nm CMOS process. The converter delivers 8 mA output current while maintaining load voltages from 0.8 ...
    • A 0.68V 0.68mW 2.4GHz PLL for ultra-low power RF systems 

      Paidimarri, Arun; Ickes, Nathan; Chandrakasan, Anantha P. (Institute of Electrical and Electronics Engineers (IEEE), 2015-05)
      A 2.4GHz PLL consuming 0.68mW has been implemented in 65nm LPCMOS for use in ultra-low power Bluetooth Low Energy (BLE) applications. VCO, charge pump and dynamic flip-flop design optimization allow low voltage operation ...
    • A 0.6V 2.9µW mixed-signal front-end for ECG monitoring 

      Yip, Marcus; Bohorquez, Jose L.; Chandrakasan, Anantha P. (Institute of Electrical and Electronics Engineers (IEEE), 2012-06)
      This paper presents a mixed-signal ECG front-end that uses aggressive voltage scaling to maximize power-efficiency and facilitate integration with low-voltage DSPs. 50/60Hz interference is canceled using mixed-signal ...
    • A 0.6V, 8mW 3D Vision Processor for a Navigation Device for the Visually Impaired 

      Jeon, Dongsuk; Ickes, Nathan; Raina, Priyanka; Wang, Hsueh-Cheng; Rus, Daniela L.; e.a. (Institute of Electrical and Electronics Engineers (IEEE), 2016-01)
      This paper presents an energy-efficient computer vision processor for a navigation device for the visually impaired. Utilizing a shared parallel datapath, out-of-order processing and co-optimization with hardware-oriented ...
    • A 0.7-V 1.8-mW H.264/AVC 720p Video Decoder 

      Finchelstein, Daniel Frederic; Sze, Vivienne; Sinangil, Mahmut Ersin; Chandrakasan, Anantha P. (Institute of Electrical and Electronics Engineers, 2009-10)
      The H.264/AVC video coding standard can deliver high compression efficiency at a cost of increased complexity and power. The increasing popularity of video capture and playback on portable devices requires that the power ...
    • 1 ghz femtosecond erbium-doped fiber lasers 

      Sander, Michelle Yen-Ling; Chang, Guoqing; Byun, Hyunil; Morse, Jonathan Lee; Chao, David; e.a. (Optical Society of America, 2010-05)
      Saturable Bragg reflector (SBR) mode-locked Er-doped fiber lasers around 1550nm with a repetition rate of 1GHz are demonstrated. Key steps to obtain stable, femtosecond pulses by avoiding thermal damage of the SBR are ...
    • 1,3-Butadiene-Induced Adenine DNA Adducts Are Genotoxic but Only Weakly Mutagenic When Replicated in Escherichia Coli of Various Repair and Replication Backgrounds 

      Seneviratne, Uthpala I.; Wu, Jie; Tretyakova, Natalia; Chang, Shiou-chi; Essigmann, John M (American Chemical Society (ACS), 2017-05)
      The adverse effects of the human carcinogen 1,3-butadiene (BD) are believed to be mediated by its DNA-reactive metabolites such as 3,4-epoxybut-1-ene (EB) and 1,2,3,4-diepoxybutane (DEB). The specific DNA adducts responsible ...
    • 1-D P- and S-wave velocity models for the collision zone between the northern Tianshan mountain and the Junggar basin based on local earthquake data 

      Sun, Anhui; Sun, Youshun; Zhang, Haijiang; Yu, Diming (Seismological Society of China, 2012-12)
      We have developed crustal minimum 1-D P- and S-wave velocity models of the collision zone between the northern Tianshan mountain and the Junggar basin (86°E–89°E, 43°N–44.5°N). These two models were created through inversion ...
    • 1-D Transforms for the Motion Compensation Residual 

      Kamisli, Fatih; Lim, Jae S. (Institute of Electrical and Electronics Engineers (IEEE), 2011-03)
      Transforms used in image coding are also commonly used to compress prediction residuals in video coding. Prediction residuals have different spatial characteristics from images, and it is useful to develop transforms that ...
    • A 1.1 nW Energy-Harvesting System with 544 pW Quiescent Power for Next-Generation Implants 

      Bandyopadhyay, Saurav; Mercier, Patrick Philip; Lysaght, Andrew Christopher; Stankovic, Konstantina M.; Chandrakasan, Anantha P. (Institute of Electrical and Electronics Engineers (IEEE), 2014-09)
      This paper presents a nW power management unit (PMU) for an autonomous wireless sensor that sustains itself by harvesting energy from the endocochlear potential (EP), the 70-100 mV electrochemical bio-potential inside the ...
    • 1.3 mm WAVELENGTH VLBI OF SAGITTARIUS A*: DETECTION OF TIME-VARIABLE EMISSION ON EVENT HORIZON SCALES 

      Fish, Vincent L.; Doeleman, Sheperd Samuel; Beaudoin, Christopher J.; Blundell, Ray; Bolin, David E.; e.a. (Institute of Physics/American Astronomical Society, 2011-02)
      Sagittarius A*, the ~4 × 10[superscript 6] M ☉ black hole candidate at the Galactic center, can be studied on Schwarzschild radius scales with (sub)millimeter wavelength very long baseline interferometry (VLBI). We report ...
    • 1.8-μm thulium microlasers integrated on silicon 

      Adam, Thomas N.; Leake, Gerald; Coolbaugh, Douglas; Bradley, Jonathan; Su, Zhan; e.a. (SPIE, 2016-02)
      A key challenge for silicon photonic systems is the development of compact on-chip light sources. Thulium-doped fiber and waveguide lasers have recently generated interest for their highly efficient emission around 1.8 μm, ...
    • 1/2 (e[superscript 2]/h) Conductance Plateau without 1D Chiral Majorana Fermions 

      Ji, Wenjie; Wen, Xiao-Gang (American Physical Society, 2018-03)
      We address the question about the origin of the 1/2(e[superscript 2]/h) conductance plateau observed in a recent experiment on an integer quantum Hall (IQH) film covered by a superconducting (SC) film. Since one-dimensional ...
    • 1/N effects in non-relativistic gauge-gravity duality 

      Adams, Allan; Maloney, Alexander; Sinha, Aninda; Vazquez, Samuel E. (Institute of Physics, 2009-03)
      We argue that higher-curvature terms in the gravitational Lagrangian lead, via non-relativistic gauge-gravity duality, to nite renormalization of the dynamical exponent of the dual conformal eld theory. Our argument ...
    • 10 Gbps TCP/IP streams from the FPGA for High Energy Physics 

      Bauer, Gerry P.; Lavinia Darlea, Georgiana; Gomez-Ceballos, Guillelmo; Paus, Christoph M. E.; Raginel, Olivier; e.a. (IOP Publishing, 2014-06)
      The DAQ system of the CMS experiment at CERN collects data from more than 600 custom detector Front-End Drivers (FEDs). During 2013 and 2014 the CMS DAQ system will undergo a major upgrade to address the obsolescence of ...
    • A 10-Gb/s Compact Low-Power Serial I/O With DFE-IIR Equalization in 65-nm CMOS 

      Kim, Byeong-Su; Liu, Yong; Dickson, Timothy O.; Bulzacchelli, John F.; Friedman, Daniel J. (Institute of Electrical and Electronics Engineers, 2009-12)
      A compact and power-efficient serial I/O targeting dense silicon carrier interconnects is reported. Based on expected channel characteristics, the proposed I/O features low-impedance transmitter termination, high-impedance ...
    • 100 Years of the American Economic Review: The Top 20 Articles 

      Arrow, Kenneth J; Bernheim, B. Douglas; Feldstein, Martin S; McFadden, Daniel L; Poterba, James Michael; e.a. (American Economic Association, 2011-02)
      This paper presents a list of the top 20 articles published in the American Economic Review during its first 100 years. This list was assembled in honor of the AER's one-hundredth anniversary by a group of distinguished ...
    • 100-W Q-switched Cryogenically Cooled Yb:YAG Laser 

      Hybl, John D.; Fan, Tso Yee; Ochoa, Juan R.; Ripin, Daniel J.; Rand, Darren A.; e.a. (Institute of Electrical and Electronics Engineers, 2009-12)
      This work describes a cryogenic, electro-optically Q-switched Yb:YAG laser that generates 114-W average TEM[subscript 00] power with 47% optical-to-optical efficiency. Pulse repetition frequency is 5 kHz, pulse duration ...