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Massive multiple-input multiple-output (MIMO) is believed to deliver unrepresented spectral efficiency gains for 5G and beyond. However, a practical challenge arises during its commercial deployment, which is known as the ``curse of…

信息论 · 计算机科学 2022-05-27 Ziao Qin , Haifan Yin , Yandi Cao , Weidong Li , David Gesbert

We comprehensively analyze the fiber nonlinearity crosstalks between DAS and communication channels through numerical results and 40 x 800-Gb/s 90-km experimental demonstration. Our findings indicate that conventional pulse-based DAS is…

光学 · 物理学 2025-05-20 Jingchuan Wang , Maoqi Liu , Liwang Lu , Alan Pak Tao Lau , Chao Lu

The exact Markov modeling analysis of erasure networks with finite buffers is an extremely hard problem due to the large number of states in the system. In such networks, packets are lost due to either link erasures or blocking by the full…

信息论 · 计算机科学 2010-12-14 Nima Torabkhani , Badri N. Vellambi , Faramarz Fekri

Precoding has stood out as a promising multi-user transmission technique to meet the emerging throughput demand of satellite communication systems while awaiting the technological maturity for exploiting higher bands. Precoding enables the…

信号处理 · 电气工程与系统科学 2020-11-04 Bhavani Shankar Mysore , Eva Lagunas , Symeon Chatzinotas , Bjorn Ottersten

The study of speech disorders can benefit greatly from time-aligned data. However, audio-text mismatches in disfluent speech cause rapid performance degradation for modern speech aligners, hindering the use of automatic approaches. In this…

音频与语音处理 · 电气工程与系统科学 2023-06-05 Theodoros Kouzelis , Georgios Paraskevopoulos , Athanasios Katsamanis , Vassilis Katsouros

Subword tokenization is an essential part of modern large language models (LLMs), yet its specific contributions to training efficiency and model performance remain poorly understood. In this work, we decouple the effects of subword…

计算与语言 · 计算机科学 2026-05-15 Théo Gigant , Bowen Peng , Jeffrey Quesnelle

Transformer architectures are increasingly effective at processing and generating very long chunks of texts, opening new perspectives for document-level machine translation (MT). In this work, we challenge the ability of MT systems to…

计算与语言 · 计算机科学 2025-04-29 Ziqian Peng , Rachel Bawden , François Yvon

In this paper, we propose a novel joint caching and massive multiple-input multiple-output (MIMO) transmission scheme, referred to as cache-aided massive MIMO, for advanced downlink cellular communications. In addition to reaping the…

信号处理 · 电气工程与系统科学 2019-03-25 Xiao Wei , Lin Xiang , Laura Cottatellucci , Tao Jiang , Robert Schober

This paper proposes the nonlinear Least Square Error (LSE) precoders for multiuser MIMO broadcast channels. The output signals of LSE Precoders are limited to be chosen from a predefined set which let these precoders address several…

信息论 · 计算机科学 2017-08-09 Mohammad Ali Sedaghat , Ali Bereyhi , Ralf Mueller

In this work, we study the asymptotic behavior of the zero-forcing precoder based on the least squares (LS) and the linear minimum mean-square error (LMMSE) channel estimates for the downlink (DL) of a frequency-division-duplex (FDD)…

信号处理 · 电气工程与系统科学 2023-12-05 Donia Ben Amor , Michael Joham , Wolfgang Utschick

While first-order channel statistics, such as bit-error rate (BER) and outage probability, play an important role in the design of wireless communication systems, they provide information only on the static behavior of fading channels. On…

信息论 · 计算机科学 2015-09-03 Ahmed O. D. Ali , Cenk M. Yetis , Murat Torlak

In future full-duplex communications, the cancellation of self-interference (SI) arising from hardware non-idealities will play an important role in the design of mobile-scale devices. To this end, we introduce an optimal digital SI…

信息论 · 计算机科学 2018-07-18 Zhe Li , Yili Xia , Wenjiang Pei , Kai Wang , Danilo P. Mandic

In this paper, we study a wireless packet broadcast system that uses linear network coding (LNC) to help receivers recover data packets that are missing due to packet erasures. We study two intertwined performance metrics, namely throughput…

信息论 · 计算机科学 2017-01-18 Mingchao Yu , Parastoo Sadeghi

A wireless relay with multiple antennas is called a multiple-input-multiple-output (MIMO) switch if it maps its input links to its output links using "precode-and-forward." Namely, the MIMO switch precodes the received signal vector in the…

信息论 · 计算机科学 2015-03-19 Fanggang Wang , Soung Chang Liew , Dongning Guo

Noise modeling in power line communications has recently drawn the attention of researchers. However, when characterizing the noise process in narrowband communications, previous works have only focused on small-scale phenomena involving…

信号处理 · 电气工程与系统科学 2021-03-02 Simone Raponi , Javier Hernandez , Aymen Omri , Gabriele Oligeri

In this work, we derive a lower bound on the training-based achievable downlink (DL) sum rate (SR) of a multi-user multiple-input-single-output (MISO) system operating in frequency-division-duplex (FDD) mode. Assuming linear minimum mean…

信号处理 · 电气工程与系统科学 2023-12-05 Donia Ben Amor , Michael Joham , Wolfgang Utschick

Interference between nodes directly limits the capacity of mobile ad hoc networks. This paper focuses on spatial interference cancelation with perfect channel state information (CSI), and analyzes the corresponding network capacity.…

信息论 · 计算机科学 2016-11-17 Kaibin Huang , Jeffrey G. Andrews , Robert W. Heath, , Dongning Guo , Randall A. Berry

In this paper, we study ultra-reliable and low-latency communication (URLLC) under fading using multiple frequency or time bins. We investigate an approach to find an upper-bound on the packet error rate when a finite-length code is used.…

信息论 · 计算机科学 2019-04-08 Jinho Choi

Adapting the transmission rate in an LMS channel is a challenging task because of the relatively fast time variations, of the long delays involved, and of the difficulty in mapping the parameters of a time-varying channel into communication…

其他计算机科学 · 计算机科学 2013-03-14 Jesus Arnau , Alberto Rico-Alvariño , Carlos Mosquera

In this letter, we investigate the downlink performance of massive multiple-input multiple-output (MIMO) systems where the base station is equipped with one-bit analogto-digital/digital-to-analog converters (ADC/DACs). Considering…

信息论 · 计算机科学 2017-02-13 Yongzhi Li , Cheng Tao , A. Lee Swindlehurst , Amine Mezghani , Liu Liu
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