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2022 IEEE Custom Integrated Circuits Conference (CICC)最新文献

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[Title page] (标题页)
Pub Date : 2022-04-01 DOI: 10.1109/cicc53496.2022.9772791
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引用次数: 0
StreamGCN: Accelerating Graph Convolutional Networks with Streaming Processing StreamGCN:使用流处理加速图卷积网络
Pub Date : 2022-04-01 DOI: 10.1109/CICC53496.2022.9772832
Atefeh Sohrabizadeh, Yuze Chi, J. Cong
While there have been many studies on hardware acceleration for deep learning on images, there has been a rather limited focus on accelerating deep learning applications involving graphs. The unique characteristics of graphs, such as the irregular memory access and dynamic parallelism, impose several challenges when the algorithm is mapped to a CPU or GPU. To address these challenges while exploiting all the available sparsity, we propose a flexible architecture called StreamGCN for accelerating Graph Convolutional Networks (GCN), the core computation unit in deep learning algorithms on graphs. The architecture is specialized for streaming processing of many small graphs for graph search and similarity computation. The experimental results demonstrate that StreamGCN can deliver a high speedup compared to a multi-core CPU and a GPU implementation, showing the efficiency of our design.
虽然有很多关于图像上深度学习的硬件加速的研究,但对加速涉及图形的深度学习应用的关注相当有限。图的独特特性,如不规则的内存访问和动态并行性,在将算法映射到CPU或GPU时带来了一些挑战。为了应对这些挑战,同时利用所有可用的稀疏性,我们提出了一种名为StreamGCN的灵活架构,用于加速图卷积网络(GCN),这是图上深度学习算法的核心计算单元。该架构专门用于许多小图的流处理,用于图搜索和相似度计算。实验结果表明,与多核CPU和GPU实现相比,StreamGCN可以提供较高的加速,显示了我们设计的效率。
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引用次数: 5
110-GHz-Bandwidth InP-HBT AMUX/ADEMUX Circuits for Beyond-1-Tb/s/ch Digital Coherent Optical Transceivers 用于超过1tb /s/ch数字相干光收发器的110ghz带宽InP-HBT AMUX/ addemux电路
Pub Date : 2022-04-01 DOI: 10.1109/CICC53496.2022.9772800
M. Nagatani, H. Wakita, Teruo Jyo, Tsutomu Takeya, H. Yamazaki, Y. Ogiso, M. Mutoh, Y. Shiratori, M. Ida, F. Hamaoka, M. Nakamura, Takayuki Kobayashi, Hiroyuki Takahashi, Y. Miyamoto
To cope with the rapid growth of communications traffic, 400-Gb/s/ch digital coherent systems are being deployed in optical core networks. However, further scaling is required, and the transmission capacity per channel is expected to exceed 1 Tb/s in the near future to sustain the ever-growing traffic. One of the most significant challenges in achieving a channel capacity of beyond 1 Tb/s is to extend the analog bandwidth of digital-to-analog converters (DACs) and analog-to-digital converters (ADCs) in the optical transceiver. This paper describes InP-HBT-based ultra-broadband analog multiplexer (AMUX) and analog de-multiplexer (ADEMUX) circuits that can extend the analog bandwidth of DACs and ADCs, respectively. In addition, experimental demonstrations of beyond-1-Tb/s/ch optical modulations and transmissions are addressed.
为了应对快速增长的通信流量,400-Gb/s/ch数字相干系统正在光核心网中部署。但是,需要进一步扩展,并且在不久的将来,每个通道的传输容量预计将超过1tb /s,以维持不断增长的流量。实现超过1tb /s的信道容量的最大挑战之一是扩展光收发器中数模转换器(dac)和模数转换器(adc)的模拟带宽。本文介绍了基于inp - hpt的超宽带模拟多路复用器(AMUX)和模拟多路复用器(ADEMUX)电路,它们可以分别扩展dac和adc的模拟带宽。此外,还讨论了超1tb /s/ch光调制和传输的实验演示。
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引用次数: 11
Watt-Level Triple-Mode Quadrature SFCPA with 56 Peaks for Ultra-Deep PBO Efficiency Enhancement Using IQ Intrinsic Interaction and Adaptive Phase Compensation 基于IQ本征相互作用和自适应相位补偿的56峰瓦特级三模正交SFCPA超深度PBO效率增强
Pub Date : 2022-04-01 DOI: 10.1109/CICC53496.2022.9772776
Bingzheng Yang, H. Qian, Yiyang Shu, Jie Zhou, Xun Luo
The low cost power amplifiers (PAs) with power back-off (PBO) efficiency enhancement are dramatically demanded in modern wireless communication. The CMOS digital PAs (DPAs) and digital transmitters (TXs) [1]–[7] are developed due to the merits of high efficiency, high integration, and low cost. To achieve higher date rate, the quadrature digital TXs are preferred, which do not need the CORDIC and phase modulator in polar TXs. To improve deep PBO efficiency of DPA, the Class-G Doherty [3], hybrid Doherty with impedance boosting [4], load modulation [5], switched transformer [6], switched/floated capacitor power amplifier (SFCPA) [7], etc. are developed. To further enhance ultra-deep PBO efficiency, a watt-level triple-mode quadrature SFCPA with 56 efficiency peaks using IQ intrinsic impedance interaction and adaptive phase compensation is proposed, which achieves efficiency enhancement at 0/2/3/6/8/9/12/14/15/18/21dB PBOs.
在现代无线通信中,对具有功率回退(PBO)效率的低成本功率放大器的需求越来越大。CMOS数字放大器(dpa)和数字发射机(TXs)[1] -[7]因其高效率、高集成度和低成本的优点而得到发展。为了获得更高的数据速率,正交数字TXs是首选,它不需要极性TXs中的CORDIC和相位调制器。为了提高DPA的深度PBO效率,开发了g类Doherty[3]、阻抗增强混合Doherty[4]、负载调制[5]、开关变压器[6]、开关/浮电容功率放大器(SFCPA)[7]等。为了进一步提高超深PBO效率,提出了一种具有56个效率峰的瓦级三模正交SFCPA,采用IQ本质阻抗相互作用和自适应相位补偿,实现了0/2/3/6/8/9/12/14/15/18/21dB PBO效率的提高。
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引用次数: 2
Full Program 完整的程序
Pub Date : 2022-04-01 DOI: 10.1109/cicc53496.2022.9772847
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引用次数: 0
A 133.6TOPS/W Compute-In-Memory SRAM Macro with Fully Parallel One-Step Multi-Bit Computation 具有完全并行一步多比特计算的133.6TOPS/W内存SRAM宏
Pub Date : 2022-04-01 DOI: 10.1109/CICC53496.2022.9772821
E. Choi, Injun Choi, Chanhee Jeon, Gichan Yun, Donghyeon Yi, S. Ha, I. Chang, M. Je
Over the years, SRAM-based compute-in-memory (CIM) structures have shown ways to perform deep neural network (DNN) computations in the mixed-signal domain with high energy efficiency but suffer from the tradeoff and limitations in their accuracy arising from analog nonidealities. Recently, circuit techniques were developed to support multi-bit analog computations in SRAM-based CIM macro [1], [2], which computes multiplication and accumulation by using transistor currents. However, the transistor current has nonlinear characteristics with respect to the gate voltage, significantly degrading the accuracies of DNNs. Some works address this problem by using charge-based computation [3], [4], where the multiplication results between 1b weight and multi-bit inputs are firstly stored in capacitors. Multi-bit-weight computations are then achieved by shifting and adding the multiplication result outputs either in the digital domain [3] or in the analog domain using a charge-sharing method [1]. The digital method typically requires a higher ADC precision and one ADC for every accumulation, becoming power heavy. The analog charge-sharing method requires switches to control, being exposed to charge injection noise and dissipating considerable power to turn on and off the switches. To address these issues, this work proposes an 8T1C SRAM-based CIM macro structure, which supports (1) multi-bit-weight charge-based computation without additional switches used for charge sharing; (2) a simple and fast computation where multi-bit-weight multiply-accumulate-averaging (MAV) voltage is immediately formed when the input is given, namely “one-step” computation; (3) compact 8T1C bit cell using metal-oxide-metal (MOM) capacitor which incurs only 1.5× cell area of the conventional 6T SRAM under logic rules; and (4) no additional power consumption in bit-shift for energy-efficient computing. We fabricated the proposed 4kb SRAM CIM macro in a 65nm process, whose structure is shown in Fig. 1, supporting a fully parallel computation of 1024 MAV operations with 64 4b inputs and 16 4b weights.
多年来,基于sram的内存计算(CIM)结构已经显示出在混合信号域中以高能效执行深度神经网络(DNN)计算的方法,但由于模拟非理想性而导致其精度受到权衡和限制。最近,基于sram的CIM宏[1],[2]中支持多位模拟计算的电路技术得到了发展,该宏利用晶体管电流计算乘法和累加。然而,晶体管电流对栅极电压具有非线性特性,这大大降低了深度神经网络的精度。一些研究通过使用基于电荷的计算来解决这个问题[3],[4],其中1b权重和多位输入之间的乘法结果首先存储在电容器中。然后通过使用电荷共享方法[1]在数字域[3]或模拟域中移动和添加乘法结果输出来实现多比特权计算。数字方法通常需要更高的ADC精度,并且每次累积需要一个ADC,因此功耗很大。模拟电荷共享方法需要控制开关,暴露在电荷注入噪声中,并且要消耗相当大的功率来打开和关闭开关。为了解决这些问题,本工作提出了一种基于8T1C sram的CIM宏结构,该结构支持(1)基于多比特重量的电荷计算,无需用于电荷共享的额外开关;(2)计算简单快速,输入给定后立即形成多比特权乘-累积平均(MAV)电压,即“一步”计算;(3)采用金属氧化物金属(MOM)电容的紧凑8T1C位单元,逻辑规则下的单元面积仅为传统6T SRAM的1.5倍;(4)在位移位中没有额外的功耗,从而实现节能计算。我们在65nm工艺中制作了拟议的4kb SRAM CIM宏,其结构如图1所示,支持1024个MAV操作的完全并行计算,64个4b输入和16个4b权重。
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引用次数: 6
Review, Survey, and Benchmark of Recent Digital LDO Voltage Regulators 最近的数字LDO稳压器的回顾,调查和基准
Pub Date : 2022-04-01 DOI: 10.1109/CICC53496.2022.9772734
Zhaoqing Wang, S. Kim, K. Bowman, Mingoo Seok
This paper presents a review of the recent digital low-dropout voltage regulators (DLDOs). We have reviewed them in five aspects: control laws, triggering methods, power-FET circuit design, digital-analog hybridization, and single vs. distributed architectures. We then have surveyed and benchmarked more than 50 DLDOs published in the last decade. In addition, we have offered a new figure-of-merit (FoM) to address the shortcomings of the previously proposed FoMs. The benchmark provides insights on which techniques contribute to better dynamic load regulation performance. The survey and benchmark results are uploaded to a public repository.
本文综述了近年来数字低压差稳压器(DLDOs)的研究进展。我们从五个方面对它们进行了回顾:控制规律,触发方法,功率场效应管电路设计,数模杂交以及单一与分布式架构。然后,我们对过去十年中发布的50多个dldo进行了调查和基准测试。此外,我们还提出了一种新的优点图(FoM)来解决先前提出的优点图的缺点。基准测试提供了对哪些技术有助于提高动态负载调节性能的见解。调查和基准测试结果上传到公共存储库。
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引用次数: 5
A 60-Gb/s/pin single-ended PAM-4 transmitter with timing skew training and low power data encoding in mimicked 10nm class DRAM process 一种60gb /s/引脚单端PAM-4发射机,采用模拟10nm级DRAM工艺进行时序倾斜训练和低功耗数据编码
Pub Date : 2022-04-01 DOI: 10.1109/CICC53496.2022.9772814
Joohwa Kim, Junyoung Park, J. Byun, Changkyu Seol, Chang-Soo Yoon, E. Shin, Hyunyoon Cho, Youngdo Um, Sucheol Lee, Hyungmin Jin, Kwangseob Shin, Hyunsub Norbert Rie, M. Jung, Jin-Hee Park, Gou Cha, Minjae Lee, Youngmin Kim, Byeori Han, Yuseong Jeon, Ji-Sang Lee, Hyejeong So, Sungduk Kim, Wansoo Park, Tae Young Kim, Youngdon Choi, J. Choi, Hyungjong Ko, Sang-Hyun Lee
The DRAM interface development to achieve a higher bandwidth has been requested according to the advance in massive computing technologies. Multi-level signaling, PAM-4 for example, is one of the most promising ways to address the requirement to extend the per-pin data rate without increasing clock frequency [1]. This paper suggests a single-ended PAM-4 transmitter for DRAM interface which requires high-speed operation. A 4-to-1 MUX based 2-tap feedforward equalizer (FFE) for bandwidth extension is used to mitigate the channel loss and inter-symbol interference (ISI). The impedance of each PAM-4 signal level can be controlled separately by applying thermometer switching in the main driver to achieve precise matching. The output driver of PAM-4 transmitter is optimized to have high linearity for operation of both low-voltage swing terminated logic (LVSTL) and pseudo open drain (POD). Also, a new timing skew training scheme for each PAM-4 signal level is developed to adjust timing for reducing clock skew in the internal path caused by PVT variations and bit error ratio (BER) increased by the non-linear characteristics of receiver. In addition, low power maximum transition avoidance (LPMTA) encoding is applied to decrease energy consumption of output driver. The prototype chip is fabricated in a 28nm CMOS process with adjusted channel length, not applying a minimum channel length, to mimic 10nm class DRAM process conditions. It is confirmed that propagation delay time (TPD) and $mathrm{I}_{text{dsat}}$ of prototype chip are well correlated with the parameters obtained by 10nm class DRAM process. Finally, 1.67-pJ/b of energy efficiency with 1.2V supply is measured at 60-Gb/s/pin with optimized single-ended PAM-4 transmitter.
随着海量计算技术的发展,对DRAM接口的发展提出了更高的带宽要求。多级信令,例如PAM-4,是在不增加时钟频率的情况下满足扩展每引脚数据速率要求的最有希望的方法之一[1]。本文提出了一种用于高速运行的DRAM接口的单端PAM-4发射机。基于4对1 MUX的2抽头前馈均衡器(FFE)用于带宽扩展,以减轻信道损耗和码元间干扰(ISI)。每个PAM-4信号电平的阻抗可以通过在主驱动器中应用温度计开关来单独控制,以实现精确匹配。PAM-4变送器的输出驱动器经过优化,具有高线性度,可同时用于低压摆幅端接逻辑(LVSTL)和伪开漏(POD)。此外,针对PAM-4信号的各个电平,提出了一种新的时序偏差训练方案,通过调整时序来降低由于PVT变化和接收机非线性特性导致的误码率(BER)增加而导致的内路时钟偏差。此外,采用低功率最大过渡避免(LPMTA)编码来降低输出驱动器的能耗。该原型芯片采用28nm CMOS工艺制造,可调整通道长度,而不应用最小通道长度,以模拟10nm级DRAM工艺条件。验证了原型芯片的传播延迟时间(TPD)和$ mathm {I}_{text{dsat}}$与10nm级DRAM工艺获得的参数具有良好的相关性。最后,利用优化后的单端PAM-4发射机,在60 gb /s/引脚速率下测量了1.2V电源下1.67 pj /b的能量效率。
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引用次数: 0
All Rivers Flow to the Sea: A High Power Density Wireless Power Receiver with Split-Dual-Path Rectification and Hybrid-Quad-Path Step-Down Conversion 海纳百川:一种分路双路整流和混合四路降压转换的高功率密度无线电源接收器
Pub Date : 2022-04-01 DOI: 10.1109/CICC53496.2022.9772824
Zixiao Lin, Yan Lu, Fangyu Mao, Chuang Wang, R. Martins
High power density wireless fast charging is an attractive feature for mobile devices. In this paper, we propose a wireless power receiver (RX) with rectification through a split-dual-path and a step-down conversion obtained with a merged switched-capacitor-inductor hybrid-quad-path (S2H4). In such architecture, in the LC tank (rivers' source) the currents separate into multiple paths (rivers) and finally all flow into the battery (the sea).
对于移动设备来说,高功率密度无线快速充电是一个很有吸引力的特性。在本文中,我们提出了一种无线电源接收器(RX),通过分裂双路整流和合并开关电容电感混合四路(S2H4)获得降压转换。在这样的架构中,在LC水箱(河流的源头)中,电流分成多条路径(河流),最终全部流入电池(海洋)。
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引用次数: 0
Smart Threads for Tissue-Embedded Bioelectronics 组织嵌入式生物电子学的智能线
Pub Date : 2022-04-01 DOI: 10.1109/CICC53496.2022.9772846
S. Sonkusale
Conventional medicine relies on a one-size-fits-all standard of care which does not account for diffences in the complexity of disease between individuals and their responses to treatment. New and more effective approach for healthcare demands personalized approach to treatment. This requires measuring the relevant markers of health and disease including but not limited to the metabolic state of an individual, but also the overall diet/nutrition profile, physical activity, lifestyle, and the environmental parameters. Measurement is performed by a suite of sensors, both physical and chemical and their electronic interfaces, whereas treatments are prescribed in the form of drugs or change in diet/nutrition or exercise, with the goal of improving the health of an individual in the shortest time. From a circuits and systems perspective, this resembles a closed loop feedback system with human as a complex dynamical system monitored by a suite of physical chemical and biological sensors and actuated via several treatments/therapies with precise timing, quantity and intesity. For such feedback system built with human-in-the-Ioop, the following requirements should be met: (1) Device should have an intimate reliable interface with human body and tissue (2) It should be bio-compatible (3) It should be minimally invasive and possibly inconspicous to the individual and (4) It should operate continuously or in real-time, commensurate with the underlying dynamics of the biomarker being monitored, and/or the timeliness and frequency at which treatment is being delivered. Flexible bioelectronics[2], [3] is an emerging area of research and development where devices for sensing, actuation, microfluidics, therapy, computing and communication are engineered for bio-integration to address the aforementioned fundamental challenges.
传统医学依赖于一刀切的护理标准,没有考虑到个体之间疾病复杂性的差异及其对治疗的反应。新的和更有效的医疗保健方法需要个性化的治疗方法。这需要测量健康和疾病的相关标志,包括但不限于个人的代谢状态,还包括总体饮食/营养状况、身体活动、生活方式和环境参数。测量由一套物理和化学传感器及其电子接口进行,而治疗则以药物或改变饮食/营养或运动的形式规定,其目标是在最短的时间内改善个人的健康状况。从电路和系统的角度来看,这类似于一个闭环反馈系统,人类是一个复杂的动态系统,由一套物理、化学和生物传感器监测,并通过精确的时间、数量和强度的几种治疗/疗法来驱动。对于这种使用“人在环”构建的反馈系统,应满足以下要求:(1)设备应与人体和组织有密切可靠的接口(2)它应具有生物相容性(3)它应具有微创性,并且对个体可能不明显;(4)它应连续或实时运行,与被监测的生物标志物的潜在动态相适应,和/或治疗交付的及时性和频率。柔性生物电子学是一个新兴的研究和发展领域,用于传感、驱动、微流体、治疗、计算和通信的设备是为生物集成而设计的,以解决上述基本挑战。
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引用次数: 0
期刊
2022 IEEE Custom Integrated Circuits Conference (CICC)
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