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Millimeter-wave (mmWave) communication is a promising technology to cope with the exponential increase in 5G data traffic. Such networks typically require a very dense deployment of base stations. A subset of those, so-called macro base…

网络与互联网体系结构 · 计算机科学 2020-07-07 Dingwen Yuan , Hsuan-Yin Lin , Jörg Widmer , Matthias Hollick

This paper investigates the issues of the hybrid beamforming design for the orthogonal frequency division multiplexing dual-function radar-communication (DFRC) system in multiple task scenarios involving the radar scanning and detection…

信号处理 · 电气工程与系统科学 2025-04-29 Lingyun Xu , Bowen Wang , Ziyang Cheng

This paper presents a distributed resource allocation algorithm to jointly optimize the power allocation, channel allocation and relay selection for decode-and-forward (DF) relay networks with a large number of sources, relays, and…

信息论 · 计算机科学 2015-03-19 Yin Sun , Zhoujia Mao , Xiaofeng Zhong , Yuanzhang Xiao , Shidong Zhou , Ness B. Shroff

Finding the shortest route in wireless mesh networks is an important aspect. Many techniques are used to solve this problem like dynamic programming, evolutionary algorithms, weighted-sum techniques, and others. In this paper, we use…

网络与互联网体系结构 · 计算机科学 2018-05-22 Sabreen Mahmood Shukr , Nuha Abdul Sahib Alwan , Ibraheem Kassim Ibraheem

We investigate the problem of multi-hop scheduling in self-backhauled millimeter wave (mmWave) networks. Owing to the high path loss and blockage of mmWave links, multi-hop paths between the macro base station and the intended users via…

网络与互联网体系结构 · 计算机科学 2018-04-27 Trung Kien Vu , Chen-Feng Liu , Mehdi Bennis , Merouane Debbah , Matti Latva-aho

This paper studies the communication complexity of convex risk-averse optimization over a network. The problem generalizes the well-studied risk-neutral finite-sum distributed optimization problem and its importance stems from the need to…

最优化与控制 · 数学 2023-03-08 Guanghui Lan , Zhe Zhang

Frequency diverse array (FDA) differs from conventional array techniques in that it imposes an additional frequency offset (FO) across the array elements. The use of FO provides the FDA with the controllable degree of freedom in range…

信号处理 · 电气工程与系统科学 2022-12-21 Wenkai Jia , Wen-Qin Wang , Shungsheng Zhang

This paper investigates the problem of joint subcarrier and power allocation in the coexistence of radar and multi-user communication systems. Specifically, in our research scenario, the base station (BS) provides information transmission…

信息论 · 计算机科学 2023-08-23 Jia Zhu , Yifeng Xiong , Junsheng Mu , Ronghui Zhang , Xiaojun Jing

A spectrum- and energy-efficient system is essential for millimeter wave communication systems that require large antenna arrays with power-demanding ADCs. We propose an ADC bit allocation (BA) algorithm that solves a minimum mean squared…

信息论 · 计算机科学 2017-12-07 Jinseok Choi , Junmo Sung , Brian L. Evans , Alan Gatherer

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

This work establishes a novel link between the problem of PAC-learning high-dimensional graphical models and the task of (efficient) counting and sampling of graph structures, using an online learning framework. We observe that if we apply…

机器学习 · 计算机科学 2025-11-14 Arnab Bhattacharyya , Sutanu Gayen , Philips George John , Sayantan Sen , N. V. Vinodchandran

Online selection of optimal waveforms for target tracking with active sensors has long been a problem of interest. Many conventional solutions utilize an estimation-theoretic interpretation, in which a waveform-specific Cram\'{e}r-Rao lower…

信息论 · 计算机科学 2022-02-14 Charles E. Thornton , R. Michael Buehrer , Harpreet S. Dhillon , Anthony F. Martone

This paper considers the weighted sum rate (WSR) maximized resource allocation (RA) constrained by a system sum power in an orthogonal frequency division multiple access (OFDMA) downlink transmission system assisted by multiple…

信息论 · 计算机科学 2015-05-28 Tao Wang , Luc Vandendorpe

We extend the regret analysis of the online distributed weighted dual averaging (DWDA) algorithm [1] to the dynamic setting and provide the tightest dynamic regret bound known to date with respect to the time horizon for a distributed…

最优化与控制 · 数学 2020-12-11 Antoine Lesage-Landry , Duncan S. Callaway

This paper studies the positioning problem based on two-way time-of-arrival (TW-TOA) measurements in asynchronous wireless sensor networks. Since the optimal estimator for this problem involves difficult nonconvex optimization, we propose…

应用统计 · 统计学 2014-07-23 Mohammad Reza Gholami , Sinan Gezici , Erik G. Ström

We consider a hybrid active-passive radar system that employs a wireless source as a passive illuminator of opportunity (IO) and a co-channel active radar transmitter operating in the same frequency band to seek spectral efficiency. The…

信号处理 · 电气工程与系统科学 2020-02-19 Fangzhou Wang , Hongbin Li

This paper considers joint beamformer design towards maximizing the mutual information in a coherent wireless sensor network with noisy observation and multiple antennae. Leveraging the weighted minimum mean square error and block…

信息论 · 计算机科学 2015-11-12 Yang Liu , Jing Li , Xuanxuan Lu

Orthogonal Frequency Division Multiplexing (OFDM) is the key component of many emerging broadband wireless access standards. The resource allocation in OFDM uplink, however, is challenging due to heterogeneity of users' Quality of Service…

网络与互联网体系结构 · 计算机科学 2015-03-17 Xiaoxin Zhang , Liang Chen , Jianwei Huang , Minghua Chen , Yuping Zhao

Routing is a challenging problem for wireless ad hoc networks, especially when the nodes are mobile and spread so widely that in most cases multiple hops are needed to route a message from one node to another. In fact, it is known that any…

分布式、并行与集群计算 · 计算机科学 2018-03-01 Daniel Jung , Christina Kolb , Christian Scheideler , Jannik Sundermeier

Waveform design has served as a cornerstone for each generation of mobile communication systems. The future sixth-generation (6G) mobile communication networks are expected to employ larger-scale antenna arrays and exploit higher-frequency…

信号处理 · 电气工程与系统科学 2024-06-14 Zhiqiang Xiao , Xianda Liu , Yong Zeng , J. Andrew Zhang , Shi Jin , Rui Zhang