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Distributed phased arrays based multiple-input multiple-output (DPA-MIMO) is a newly introduced architecture that enables both spatial multiplexing and beamforming while facilitating highly reconfigurable hardware implementation in…

信息论 · 计算机科学 2020-08-21 Yu Zhang , Yiming Huo , Dongming Wang , Xiaodai Dong , Xiaohu You

This paper proposes a joint active and passive beamforming design for reconfigurable intelligent surface (RIS)-aided wireless communication systems, adopting a piece-wise near-field channel model. While a traditional near-field channel…

信息论 · 计算机科学 2024-06-24 Weijian Chen , Zai Yang , Zhiqiang Wei , Derrick Wing Kwan Ng , Michail Matthaiou

The main hurdle in the realization of dynamic spectrum access (DSA) systems from physical layer perspective is the reliable sensing of low power licensed users. One such scenario shows up in the unlicensed use of TV bands where the TV Band…

This paper focuses on robust transceiver design for throughput enhancement on the interference channel (IC), under imperfect channel state information (CSI). In this paper, two algorithms are proposed to improve the throughput of the…

信息论 · 计算机科学 2018-04-02 Ali Dalir , Hassan Aghaeinia , Mohammad Kazemi

The doubly-dispersive (DD) channel structure has played a pivotal role in wireless communications, particularly in high-mobility scenarios and integrated sensing and communications (ISAC), due to its ability to capture the key fading…

Distributed multichannel active noise control (DMCANC) offers effective noise reduction across large spatial areas by distributing the computational load of centralized control to multiple low-cost nodes. Conventional DMCANC methods,…

音频与语音处理 · 电气工程与系统科学 2026-01-23 Junwei Ji , Dongyuan Shi , Boxiang Wang , Ziyi Yang , Haowen Li , Woon-Seng Gan

Reconfigurable Intelligent Surfaces (RIS) are considered a key enabler to achieve the vision of Smart Radio Environments, where the propagation environment can be programmed and controlled to enhance the efficiency of wireless systems.…

网络与互联网体系结构 · 计算机科学 2023-01-24 Charbel Bou Chaaya , Mohamad Assaad , Tijani Chahed

In this paper, we study a communication system consisting of three end-nodes, e.g. a single transceiver base station (BS), one transmitting and one receiving user equipments (UEs), and a common two-way relay node (RN) wherein the…

信息论 · 计算机科学 2011-02-16 Erhan Yilmaz , Raymond Knopp , David Gesbert

User mobility in wireless data networks is increasing because of technological advances and the desire for voice and multimedia applications. These applications, however, require fast handoffs between base stations to maintain the quality…

网络与互联网体系结构 · 计算机科学 2012-06-18 S. Alagu , T. Meyyappan

As a revolutionary wireless transmission strategy, interference alignment (IA) can improve the capacity of the cell-edge users. However, the acquisition of the global channel state information (CSI) for IA leads to unacceptable overhead in…

信息论 · 计算机科学 2017-06-19 Jianpeng Ma , Shun Zhang , Hongyan Li , Nan Zhao , Victor C. M. Leung

Internet of things, supported by machine-to-machine (M2M) communications, is one of the most important applications for future 6th generation (6G) systems. A major challenge facing by 6G is enabling a massive number of M2M devices to access…

信息论 · 计算机科学 2022-09-30 Kan Zheng , Haojun Yang , Xiong Xiong , Jie Mei , Kuan Zhang

A simple feedback control algorithm is presented for distributed beamforming in a wireless network. A network of wireless sensors that seek to cooperatively transmit a common message signal to a Base Station (BS) is considered. In this…

信息论 · 计算机科学 2007-07-16 R. Mudumbai , J. Hespanha , U. Madhow , G. Barriac

Efficient radio spectrum utilization and low energy consumption in mobile devices are essential in developing next generation wireless networks. This paper presents a new medium access control (MAC) mechanism to enhance spectrum efficiency…

网络与互联网体系结构 · 计算机科学 2016-11-15 Kamal Rahimi Malekshan , Weihua Zhuang , Yves Lostanlen

Wireless systems that carry delay-sensitive information (such as speech and/or video signals) typically transmit with fixed data rates, but may occasionally suffer from transmission outages caused by the random nature of the fading…

信息论 · 计算机科学 2014-04-01 Zoran Hadzi-Velkov , Nikola Zlatanov , Robert Schober

In this letter, the channel estimation problem is studied for wireless communication systems assisted by large intelligent surface. Due to features of assistant channel, channel estimation (CE) problem for the investigated system is shown…

信息论 · 计算机科学 2019-11-07 Junliang Lin , Gongpu Wang , Rongfei Fan , Theodoros A. Tsiftsis , Chintha Tellambura

Wireless low-power transceivers used in sensor networks such as IEEE 802.15.4 typically operate in unlicensed frequency bands that are subject to external interference from devices transmitting at much higher power. Communication protocols…

网络与互联网体系结构 · 计算机科学 2012-02-23 Carlo Alberto Boano , Kay Römer , Marco Antonio Zúñiga , Thiemo Voigt

We present the results of the performance evaluation of polarization-time coding and soft interference cancellation in multi-beam satellite systems affected by co-channel interference in realistic setups. The standard of Broadband Global…

信号处理 · 电气工程与系统科学 2018-03-22 Pol Henarejos , Miguel Ángel Vázquez , Giuseppe Cocco , Ana I. Pérez-Neira

In this paper we consider the problem of transmission power allocation for remote estimation of a dynamical system in the case where the estimator is able to simultaneously receive packets from multiple interfering sensors, as it is…

系统与控制 · 电气工程与系统科学 2022-01-13 Matthias Pezzutto , Luca Schenato , Subhrakanti Dey

Reconfigurable Intelligent Surfaces (RIS) have emerged as transformative technologies, enhancing spectral efficiency and improving interference management in multi-user cooperative communications. This paper investigates the integration of…

信号处理 · 电气工程与系统科学 2025-06-17 Yomali Lokugama , Saman Atapattu , Nathan Ross , Sithamparanathan Kandeepan , Chintha Tellambura

This paper investigates the problem of resource allocation for a wireless communication network with distributed reconfigurable intelligent surfaces (RISs). In this network, multiple RISs are spatially distributed to serve wireless users…

信号处理 · 电气工程与系统科学 2020-05-04 Zhaohui Yang , Mingzhe Chen , Walid Saad , Wei Xu , Mohammad Shikh-Bahaei , H. Vincent Poor , Shuguang Cui