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In what ways could cellular massive MIMO be improved? This technology has already been shown to bring huge performance gains. However, coverage holes and difficulties to transmit multiple streams to multi-antenna users because of…

信号处理 · 电气工程与系统科学 2025-01-08 Sara Willhammar , Hiroki Iimori , Joao Vieira , Lars Sundström , Fredrik Tufvesson , Erik G. Larsson

In this paper multi-antenna half-duplex and full-duplex relaying are compared from the perspective of achievable rates. Full-duplexing operation requires additional resources at the relay such as antennas and RF chains for self-interference…

信息论 · 计算机科学 2013-03-13 Nirmal Shende , Ozgur Gurbuz , Elza Erkip

Full-duplex (FD) technology is envisaged as a key component for future mobile broadband networks due to its ability to boost the spectral efficiency. FD systems can transmit and receive simultaneously on the same frequency at the expense of…

信息论 · 计算机科学 2017-05-12 Italo Atzeni , Marios Kountouris

This work proposes a novel joint design for multiuser multiple-input multiple-output wiretap channels. The base station exploits a switching network to connect a subset of its antennas to the available radio frequency chains. The switching…

信号处理 · 电气工程与系统科学 2024-11-05 Zhenqiao Cheng , Nanxi Li , Ruizhe Long , Jianchi Zhu , Chongjun Ouyang , Peng Chen

A large majority of cellular networks deployed today make use of Frequency Division Duplexing (FDD) where, in contrast with Time Division Duplexing (TDD), the channel reciprocity does not hold and explicit downlink (DL) probing and uplink…

信息论 · 计算机科学 2019-12-09 Mahdi Barzegar Khalilsarai , Yi Song , Tianyu Yang , Saeid Haghighatshoar , Giuseppe Caire

We address the problem of downlink beamforming for mitigating the co-channel interference in multi-cell OFDMA networks. Based on the network utility maximization framework, we formulate the problem as a non-convex optimization problem…

信息论 · 计算机科学 2016-11-17 Weiqiang Xu , Xiaodong Wang

Recent wireless testbed implementations have proven that full-duplex communication is in fact possible and can outperform half-duplex systems. Many of these implementations modify existing half-duplex systems to operate in full-duplex. To…

网络与互联网体系结构 · 计算机科学 2013-12-03 Brett Kaufman , Jorma Lilleberg , Behnaam Aazhang

Small cell networks with dynamic time-division duplex (D-TDD) have emerged as a potential solution to address the asymmetric traffic demands in 5G wireless networks. By allowing the dynamic adjustment of cell-specific UL/DL configuration,…

信息论 · 计算机科学 2023-12-27 Hongguang Sun , Howard H. Yang , Xijun Wang , Chao Xu , Tony Q. S. Quek

Dynamic Time Division Duplexing (D-TDD) allows cells to accommodate asymmetric traffic variations with high resource assignment flexibility. However, this feature is limited by two additional types of interference between cells in opposite…

网络与互联网体系结构 · 计算机科学 2020-01-31 Jalal Rachad , Ridha Nasri , Laurent Decreusefond

This paper investigates wireless information and power transfer in a full-duplex MIMO relay channel where the self-sustained relay harvests energy from both source transmit signal and self-interference signal to decode and forward source…

信号处理 · 电气工程与系统科学 2019-01-31 Rafia Malik , Mai Vu

Wise arrangement of antennas is critical in wireless cellular systems for both reduction of co-channel interference (CCI) and increase the quality of service (QoS). In this paper, a novel architecture for antenna arrangement in CDMA…

网络与互联网体系结构 · 计算机科学 2012-08-23 Hamed Saghaei

This paper considers a cloud radio access network (C-RAN) where spatially distributed remote radio heads (RRHs) communicate with a full-duplex user. In order to reflect a realistic scenario, the uplink (UL) and downlink (DL) RRHs are…

信息论 · 计算机科学 2016-03-01 Mohammadali Mohammadi , Himal A. Suraweera , Chintha Tellambura

In this paper, we develop a resource allocation algorithm for uplink of in-band full-duplex (FD) cellular networks. The FD cellular network is assumed to be based on orthogonal frequency division multiple access (OFDMA) and consists of a…

信息论 · 计算机科学 2016-11-09 Jafar Banar , S. Mohammad Razavizadeh

We consider the problem of linear transceiver design to achieve max-min fairness in a downlink MIMO multicell network. This problem can be formulated as maximizing the minimum rate among all the users in an interfering broadcast channel…

信息论 · 计算机科学 2012-09-03 Meisam Razaviyayn , Mingyi Hong , Zhi-Quan Luo

Recent advances in massive multiple-input multiple-output (MIMO) communication show that equipping base stations (BSs) with large arrays of antenna can significantly improve the performance of cellular networks. Massive MIMO has the…

信号处理 · 电气工程与系统科学 2018-04-18 Yan Huang , Brian Jalaian , Stephen Russell , Hooman Samani

In this paper, we study the resource allocation for an intelligent reflecting surface (IRS)-assisted uplink system, where the base station is equipped with multiple antennas. We propose to jointly optimize the transmit power of the users,…

信息论 · 计算机科学 2020-07-21 M Zeng , E. B. Mohamed , O. A. Dobre , P. Fortier , Q. V. Pham

This paper studies the benefits of incorporating underlaid full-duplex (FD) device-to-device (D2D) communications into massive multiple-input-multiple-output (MIMO) downlink systems. Due to the nature of cellular downlink and FD D2D…

信号处理 · 电气工程与系统科学 2020-11-11 Hung V. Vu , Tho Le-Ngoc

In-band Full-duplex joint communication and sensing systems require self interference cancellation as well as decoupling of the mutual interference between UL communication signals and radar echoes. We present sub-band full-duplex as an…

信号处理 · 电气工程与系统科学 2025-10-29 Kwadwo Mensah Obeng Afrane , Yang Miao , André B. J. Kokkeler

Near-field and radiation coupling between nearby radiating elements is unavoidable, and it is considered a limiting factor for applications in wireless communications and active sensing. This article proposes a density-based topology…

系统与控制 · 电气工程与系统科学 2025-10-14 Pan Lu , Eddie Wadbro , Jonas Starck , Martin Berggren , Emadeldeen Hassan

Simultaneous co-channel transmission and reception, denoted as in-band full duplex (FD) communication, has been promoted as an attractive solution to improve the spectral efficiency of cellular networks. However, in addition to the…

网络与互联网体系结构 · 计算机科学 2015-12-15 Itsikiantsoa Randrianantenaina , Hesham Elsawy , Mohamed-Slim Alouini