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Hybrid analog/digital MIMO architectures were recently proposed as an alternative for fully-digitalprecoding in millimeter wave (mmWave) wireless communication systems. This is motivated by the possible reduction in the number of RF chains…

Hybrid beamforming (HB) has been widely studied for reducing the number of costly radio frequency (RF) chains in massive multiple-input multiple-output (MIMO) systems. However, previous works on HB are limited to a single user equipment…

信息论 · 计算机科学 2016-11-03 Dengkui Zhu , Boyu Li , Ping Liang

All-digital massive multiuser (MU) multiple-input multiple-output (MIMO) at millimeter-wave (mmWave) frequencies is a promising technology for next-generation wireless systems. Low-resolution analog-to-digital converters (ADCs) can be…

信息论 · 计算机科学 2023-12-06 Victoria Palhares , Gian Marti , Oscar Castañeda , Christoph Studer

Edge deployment of low-batch large language models (LLMs) faces critical memory bandwidth bottlenecks when executing memory-intensive general matrix-vector multiplications (GEMV) operations. While digital processing-in-memory (PIM)…

硬件体系结构 · 计算机科学 2026-01-21 Ye Lin , Chao Fang , Xiaoyong Song , Qi Wu , Anying Jiang , Yichuan Bai , Li Du

Processing-in-memory (PIM), as a novel computing paradigm, provides significant performance benefits from the aspect of effective data movement reduction. SRAM-based PIM has been demonstrated as one of the most promising candidates due to…

硬件体系结构 · 计算机科学 2023-11-01 Cenlin Duan , Jianlei Yang , Xiaolin He , Yingjie Qi , Yikun Wang , Yiou Wang , Ziyan He , Bonan Yan , Xueyan Wang , Xiaotao Jia , Weitao Pan , Weisheng Zhao

Millimeter wave (mmWave) MIMO will likely use hybrid analog and digital precoding, which uses a small number of RF chains to avoid energy consumption associated with mixed signal components like analog-to-digital components not to mention…

信息论 · 计算机科学 2015-07-17 Xinyu Gao , Linglong Dai , Shuangfeng Han , Chih-Lin I , Robert W. Heath

Massive multi-user multiple-input multiple-output (MU-MIMO) wireless systems operating at millimeter-wave (mmWave) frequencies enable simultaneous wideband data transmission to a large number of users. In order to reduce the complexity of…

Hybrid digital analog (HDA) beamforming has attracted considerable attention in practical implementation of millimeter wave (mmWave) multiuser multiple-input multiple-output (MU-MIMO) systems due to the low power consumption with respect to…

信息论 · 计算机科学 2019-10-08 Xiaoshen Song , Thomas Kühne , Giuseppe Caire

All-digital millimeter-wave (mmWave) massive multi-user multiple-input multiple-output (MU-MIMO) receivers enable extreme data rates but require high power consumption. In order to reduce power consumption, this paper presents the first…

信号处理 · 电气工程与系统科学 2021-07-26 Oscar Castañeda , Zachariah Boynton , Seyed Hadi Mirfarshbafan , Shimin Huang , Jamie C. Ye , Alyosha Molnar , Christoph Studer

Analog Beamsteering (ABS) has emerged as a low complexity, power efficient solution for MillimeterWave (mmWave) massive Multiple Input Multiple Output (MIMO) systems. Moreover, driven by the low spatial correlation between the User…

信号处理 · 电气工程与系统科学 2019-02-01 Mohamed Shehata , Matthieu Crussière , Maryline Hélard

Massive multiuser (MU) multiple-input multiple-output (MIMO) will be a core technology in fifth-generation (5G) wireless systems as it offers significant improvements in spectral efficiency compared to existing multi-antenna technologies.…

To satisfy the capacity requirements of future mobile systems, under-utilized millimeter wave frequencies can be efficiently exploited by employing massive MIMO technology with highly directive beamforming. Hybrid analog-digital beamforming…

信号处理 · 电气工程与系统科学 2020-12-08 Mohammad Majidzadeh , Jarkko Kaleva , Nuutti Tervo , Harri Pennanen , Antti Tolli , Matti Latva-aho

We consider the problem of jointly optimizing ADC bit resolution and analog beamforming over a frequency-selective massive MIMO uplink. We build upon a popular model to incorporate the impact of low bit resolution ADCs, that hitherto has…

信号处理 · 电气工程与系统科学 2019-02-28 Narayan Prasad , Xiao-Feng Qi , Alan Gatherer

Processing-in-Memory (PIM) architectures offer promising solutions for efficiently handling AI applications in energy-constrained edge environments. While traditional PIM designs enhance performance and energy efficiency by reducing data…

硬件体系结构 · 计算机科学 2025-12-09 Sangmin Jeon , Kangju Lee , Kyeongwon Lee , Woojoo Lee

As a key enabling technology for 5G wireless, millimeter wave (mmWave) communication motivates the utilization of large-scale antenna arrays for achieving highly directional beamforming. However, the high cost and power consumption of RF…

信息论 · 计算机科学 2018-07-04 Qingjiang Shi , Mingyi Hong

Enabling communications in the (sub-)THz band will call for massive multiple-input multiple-output (MIMO) arrays at either the transmit- or receive-side, or at both. To scale down the complexity and power consumption when operating across…

信号处理 · 电气工程与系统科学 2023-12-05 Italo Atzeni , Antti Tölli , Duy H. N. Nguyen , A. Lee Swindlehurst

Hybrid analog and digital beamforming has emerged as a key enabling technology for millimeter wave (mmWave) massive multiple-input multiple-output (MIMO) communication systems since it can balance the trade-off between system performance…

信号处理 · 电气工程与系统科学 2022-08-11 Pengfei Ni , Rang Liu , Ming Li , Qian Liu

The use of base stations (BSs) and access points (APs) with a large number of antennas, called Massive MIMO (multiple-input multiple-output), is a key technology for increasing the capacity of 5G networks and beyond. While originally…

信息论 · 计算机科学 2019-01-16 Emil Björnson , Liesbet Van der Perre , Stefano Buzzi , Erik G. Larsson

Millimeter wave (mmWave) communications have been considered as a key technology for next generation cellular systems and Wi-Fi networks because of its advances in providing orders-of-magnitude wider bandwidth than current wireless…

信息论 · 计算机科学 2018-07-04 Zihuan Wang , Ming Li , Qian Liu , A. Lee Swindlehurst

Power consumption of multi-user (MU) precoding is a major concern in all-digital massive MU multiple-input multiple-output (MIMO) base-stations with hundreds of antenna elements operating at millimeter-wave (mmWave) frequencies. We propose…

信息论 · 计算机科学 2020-09-14 Oscar Castañeda , Sven Jacobsson , Giuseppe Durisi , Tom Goldstein , Christoph Studer