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Ambient backscatter communication (AmBC) enables ambient Internet of Things (AIoT) devices to achieve ultra-low-power, low-cost, and massive connectivity. Most existing AmBC studies assume ideal synchronization between the backscatter…

信息论 · 计算机科学 2025-10-06 Yuxin Li , Guangyue Lu , Yinghui Ye , Zehui Xiong , Liqin Shi

We analyze asynchronous-type algorithms for distributed SGD in the heterogeneous setting, where each worker has its own computation and communication speeds, as well as data distribution. In these algorithms, workers compute possibly stale…

机器学习 · 计算机科学 2023-11-01 Rustem Islamov , Mher Safaryan , Dan Alistarh

Localizing linearly moving sound sources using microphone arrays is challenging as the transient nature of the signal leads to relatively short observation periods. Commonly, a moving focus is used and most methods operate at least…

音频与语音处理 · 电气工程与系统科学 2024-08-21 Christian H. Kasess , Wolfgang Kreuzer , Prateek Soni , Holger Waubke

Hybrid Automatic Repeat Request (HARQ) schemes typically allocate all available resources to retransmit failed packets to ensure reliability. However, under stringent delay constraints, these schemes often exhibit low spectral efficiency…

信号处理 · 电气工程与系统科学 2026-03-05 Hongling Huang , Jintao Wang , Zheng Shi , Xu Wang , Guanghua Yang , Shaodan Ma , Haichuan Ding

A simple data-aided scheme for sampling clock synchronisation in reduced-guard-interval coherent optical orthogonal frequency division multiplexing (RGI-CO-OFDM) systems is proposed. In the proposed scheme, the sampling clock offset (SCO)…

信号处理 · 电气工程与系统科学 2018-01-08 Oluyemi Omomukuyo , Deyuan Chang , Octavia A. Dobre , Ramachandran Venkatesan , Telex M. N. Ngatched

Asynchronous methods for solving systems of linear equations have been researched since Chazan and Miranker's pioneering 1969 paper on chaotic relaxation. The underlying idea of asynchronous methods is to avoid processor idle time by…

分布式、并行与集群计算 · 计算机科学 2015-07-16 Haim Avron , Alex Druinsky , Anshul Gupta

This paper introduces an iterative scheme for acoustic model inversion where the notion of proximity of two traces is not the usual least-squares distance, but instead involves registration as in image processing. Observed data are matched…

最优化与控制 · 数学 2013-04-22 Hyoungsu Baek , Henri Calandra , Laurent Demanet

In this letter, we analyze the achievable rate of ultra-reliable low-latency communications (URLLC) in a randomly modeled wireless network. We use two mathematical tools to properly characterize the considered system: i) stochastic geometry…

信息论 · 计算机科学 2019-10-31 Jeonghun Park

This letter introduces a novel wireless-powered backscatter communication system which allows sensors to utilize RF signals transmitted from a dedicated RF energy source to transmit data. In the proposed system, when the RF energy source…

网络与互联网体系结构 · 计算机科学 2018-01-09 Nguyen Van Huynh , Dinh Thai Hoang , Dusit Niyato , Ping Wang , Dong In Kim

Stochastic clocks represent a class of time change methods for incorporating trading activity into continuous-time financial models, with the ability to deal with typical asymmetrical and tail risks in financial returns. In this paper we…

统计金融 · 定量金融 2024-08-20 Zhe Fei , Weixuan Xia

Coflow is a network abstraction used to represent communication patterns in data centers. The coflow scheduling problem encountered in large data centers is a challenging $\mathcal{NP}$-hard problem. This paper tackles the scheduling…

数据结构与算法 · 计算机科学 2023-12-29 Chi-Yeh Chen

Exascale systems will suffer failures hourly. HPC programmers rely mostly on application-level checkpoint and a global rollback to recover. In recent years, techniques reducing the number of rolling back processes have been implemented via…

分布式、并行与集群计算 · 计算机科学 2018-06-06 Kiril Dichev , Kirk Cameron , Dimitrios Nikolopoulos

We consider a decentralized wireless network with several source-destination pairs sharing a limited number of orthogonal frequency bands. Sources learn to adapt their transmissions (specifically, their band selection strategy) over time,…

网络与互联网体系结构 · 计算机科学 2025-04-01 Yubo Zhang , Pedro Botelho , Trevor Gordon , Gil Zussman , Igor Kadota

Wireless communications in the terahertz band have been recently proposed as complement to conventional wired interconnects within computing packages. Such environments are typically highly reverberant, hence showing long channel impulse…

Reinforcement learning (RL) is rapidly reaching and surpassing human-level control capabilities. However, state-of-the-art RL algorithms often require timesteps and reaction times significantly faster than human capabilities, which is…

机器学习 · 计算机科学 2025-07-29 Devdhar Patel , Hava Siegelmann

Consider an undirected weighted graph $G = (V,E,w)$. We study the problem of computing $(1+\epsilon)$-approximate shortest paths for $S \times V$, for a subset $S \subseteq V$ of $|S| = n^r$ sources, for some $0 < r \le 1$. We devise a…

数据结构与算法 · 计算机科学 2021-02-15 Michael Elkin , Ofer Neiman

In this paper we analyze a specific class of rateless codes, called LT codes with unequal recovery time. These codes provide the option of prioritizing different segments of the transmitted data over other. The result is that segments are…

信息论 · 计算机科学 2012-04-23 Jesper H. Sørensen , Petar Popovski , Jan Østergaard

Real-time, high-precision localization in large-scale wireless networks faces two primary challenges: clock offsets caused by network asynchrony and non-line-of-sight (NLoS) conditions. To tackle these challenges, we propose a…

信号处理 · 电气工程与系统科学 2025-07-29 Yili Deng , Jie Fan , Jiguang He , Baojia Luo , Miaomiao Dong , Zhongyi Huang

Reliable transmission of arbitrarily correlated sources over multiple-access relay channels (MARCs) and multiple-access broadcast relay channels (MABRCs) is considered. In MARCs, only the destination is interested in a reconstruction of the…

信息论 · 计算机科学 2012-07-04 Yonathan Murin , Ron Dabora , Deniz Gündüz

We reformulate the signal temporal logic (STL) synthesis problem as a maximum a-posteriori (MAP) inference problem. To this end, we introduce the notion of random STL~(RSTL), which extends deterministic STL with random predicates. This new…

机器人学 · 计算机科学 2021-05-14 Ki Myung Brian Lee , Chanyeol Yoo , Robert Fitch