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Magnetic induction (MI) communication is an effective underground emergency communication technique after disasters such as landslides, mine collapses, and earthquakes, due to its advantages in mediums such as soil, concrete, and metals.…

信号处理 · 电气工程与系统科学 2025-10-07 Jianyu Wang , Tianrui Hou , Wenchi Cheng , Hailin Zhang

Flexible Bayesian models are typically constructed using limits of large parametric models with a multitude of parameters that are often uninterpretable. In this article, we offer a novel alternative by constructing an exponentially tilted…

统计方法学 · 统计学 2023-03-20 Abhisek Chakraborty , Anirban Bhattacharya , Debdeep Pati

This paper is devoted to the performance study of the Linear Minimum Mean Squared Error estimator for multidimensional signals in the large dimension regime. Such an estimator is frequently encountered in wireless communications and in…

信息论 · 计算机科学 2008-10-13 Abla Kammoun , Malika Kharouf , Walid Hachem , Jamal Najim

For multichannel speech enhancement, this letter derives a robust maximum likelihood distortionless response beamformer by modeling speech sparse priors with a complex generalized Gaussian distribution, where we refer to as the CGGD-MLDR…

音频与语音处理 · 电气工程与系统科学 2021-02-22 Weixin Meng , Chengshi Zheng , Xiaodong Li

In this work, we present a novel robust distributed beamforming (RDB) approach to mitigate the effects of channel errors on wireless networks equipped with relays based on the exploitation of the cross-correlation between the received data…

信号处理 · 电气工程与系统科学 2017-12-05 H. Ruan , R. C. de Lamare

A dual-robust design of beamforming is investigated in an integrated sensing and communication (ISAC) system.Existing research on robust ISAC waveform design, while proposing solutions to imperfect channel state information (CSI), generally…

信号处理 · 电气工程与系统科学 2024-05-20 Wanting Lyu , Songjie Yang , Yue Xiu , Xinyi Chen , Zhongpei Zhang , Chadi Assi , Chau Yuan

This work gives a blind beamforming strategy for intelligent reflecting surface (IRS), aiming to boost the received signal-to-noise ratio (SNR) by coordinating phase shifts across reflective elements in the absence of channel information.…

信息论 · 计算机科学 2022-11-04 Shuyi Ren , Kaiming Shen , Yaowen Zhang , Xin Li , Xin Chen , Zhi-Quan Luo

This paper studies transmit beamforming design in an integrated sensing and communication (ISAC) system, where a base station sends symbols to perform downlink multi-user communication and sense an extended target simultaneously. We first…

信息论 · 计算机科学 2023-12-19 Yiqiu Wang , Meixia Tao , Shu Sun

In this paper, we investigate the robust outage constrained transmission design for an intelligent reflecting surface (IRS) aided secure communication system. We assume that a single-antenna legitimate receiver (Bob) served by a…

信号处理 · 电气工程与系统科学 2024-10-30 Sheng Hong , Cunhua Pan , Gui Zhou , Hong Ren , Kezhi Wang

We develop a new approach to robust adaptive beamforming in the presence of signal steering vector errors. Since the signal steering vector is known imprecisely, its presumed (prior) value is used to find a more accurate estimate of the…

信息论 · 计算机科学 2012-05-15 Arash Khabbazibasmenj , Sergiy A. Vorobyov , Aboulnasr Hassanien

This work studies a beamforming design for downlink transmission of a multi-user multiple-input single-output (MISO) system where each legitimate user employs a power splitting (PS) based simultaneous wireless information and power transfer…

信息论 · 计算机科学 2018-09-13 Miao Zhang , Kanapathippillai Cumanan , Lei Ni , Hang Hu Alister G. Burr , Zhiguo Ding

In this paper we consider the problem of communication scheduling in wireless networks with respect to the SINR(Signal to Interference plus Noise Ratio) constraint in metric spaces. The nodes are assigned linear powers, i.e. for each sender…

网络与互联网体系结构 · 计算机科学 2011-07-26 Tigran Tonoyan

This paper deals with distributed beamforming techniques for wireless networks with half-duplex amplify-and-forward relays. Existing schemes optimize the beamforming weights based on the assumption that channel state information (CSI) is…

信息论 · 计算机科学 2016-11-18 Peter Fertl , Ari Hottinen , Gerald Matz

In intelligent reflecting surface (IRS) aided wireless communication systems, channel state information (CSI) is crucial to achieve its promising passive beamforming gains. However, CSI errors are inevitable in practice and generally…

信息论 · 计算机科学 2022-10-17 Ming-Min Zhao , An Liu , Rui Zhang

Active reconfigurable intelligent surfaces (RISs) have recently been proposed to compensate for the severe multiplicative fading effect of conventional passive RIS-aided systems. Each reflecting element of active RISs is assisted by an…

信息论 · 计算机科学 2023-02-21 Gui Zhou , Cunhua Pan , Hong Ren , Dongfang Xu , Zaichen Zhang , Jiangzhou Wang , Robert Schober

The radio frequency (RF) phase shifter with finite quantization bits in analog beamforming (AB) structure forms quantization error (QE) and causes a performance loss of received signal to interference plus noise ratio (SINR) at the receiver…

信息论 · 计算机科学 2019-04-10 Jiayu Li , Ling Xu , Ping Lu , Tingting Liu , Zhihong Zhuang , Jinsong Hu , Feng Shu , Jiangzhou Wang

The paper considers sparse array design for receive beamforming achieving maximum signal-to-interference plus noise ratio (MaxSINR) for both single point source and multiple point sources, operating in an interference active environment.…

信号处理 · 电气工程与系统科学 2020-01-08 Syed A. Hamza , Moeness G. Amin

This paper investigates reconfigurable intelligent surface (RIS)-assisted secure multiuser communication systems subject to hardware impairments (HIs). We jointly optimize the beamforming vectors at the base station (BS) and the phase…

信息论 · 计算机科学 2022-10-12 Zhangjie Peng , Ruisong Weng , Cunhua Pan , Gui Zhou , Marco Di Renzo , A. Lee Swindlehurst

In reconfigurable intelligent surface (RIS) aided millimeter-wave (mmWave) communication systems, in order to overcome the limitation of the conventional channel state information (CSI) acquisition techniques, this paper proposes a location…

信息论 · 计算机科学 2024-10-28 Zhe Xing , Rui Wang , Xiaojun Yuan , Jun Wu

We propose a data-aided transmit beamforming scheme for the multi-user multiple-input-single-output (MISO) downlink channel. While conventional beamforming schemes aim at the minimization of the transmit power subject to suppressing…

信息论 · 计算机科学 2023-07-19 C. Masouros , G. Zheng