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In this work, we study the generalized degrees-of-freedom (GDoF) of downlink and uplink cellular networks, modeled as Gaussian interfering broadcast channels (IBC) and Gaussian interfering multiple access channels (IMAC), respectively. We…

信息论 · 计算机科学 2020-01-17 Hamdi Joudeh , Giuseppe Caire

Uplink cellular networks are interference-dominated but interference channel state information (CSI) is rarely available at scale. The emerging fluid antenna system (FAS) concept, which provides additional spatial degrees of freedom through…

信号处理 · 电气工程与系统科学 2026-05-25 Chenguang Rao , Kai-Kit Wong , Xusheng Zhu , Hanjiang Hong , Chan-Byoung Chae , Ross Murch

Sharing the spectrum with in-band full-duplex (FD) primary users (PU) is a challenging and interesting problem in the underlay cognitive radio (CR) systems. The self-interference introduced at the primary network may dramatically impede the…

信息论 · 计算机科学 2015-10-13 Mohamed Gaafar , Osama Amin , Walid Abediseid , Mohamed-Slim Alouini

This paper considers coordinated linear precoding for rate optimization in downlink multicell, multiuser orthogonal frequency- division multiple access networks. We focus on two different design criteria. In the first, the weighted sum-rate…

信息论 · 计算机科学 2015-06-17 Mirza Golam Kibria , Hidekazu Murata

This paper investigates the linear precoder design for $K$-user interference channels of multiple-input multiple-output (MIMO) transceivers under finite alphabet inputs. We first obtain general explicit expressions of the achievable rate…

信息论 · 计算机科学 2016-11-18 Yongpeng Wu , Chengshan Xiao , Xiqi Gao , John D. Matyjas , Zhi Ding

This paper tackles the problem of the simultaneous interference among the multiple users in the downlink of a wireless multiantenna system. In order to exploit the multiuser interference and transform it into useful power at the receiver…

信号处理 · 电气工程与系统科学 2020-11-10 Maha Alodeh , Björn Ottersten

This paper addresses the problem of exploiting interference among simultaneous multiuser transmissions in the downlink of multiple-antenna systems. Using symbol-level precoding, a new approach towards addressing the multiuser interference…

信息论 · 计算机科学 2016-11-17 Maha Alodeh , Symeon Chatzinotas , Bjorn Ottersten

This paper studies the optimal points in the capacity region of Gaussian multiple access channels (GMACs) with constant fading, multiple antennas and various power constraints. The points of interest maximize general rate objectives that…

信息论 · 计算机科学 2016-01-15 Daniel Calabuig , Ramy H. Gohary , Halim Yanikomeroglu

This paper concerns the coordinate multi-cell beamforming design for integrated sensing and communications (ISAC). In particular, we assume that each base station (BS) has massive antennas. The optimization objective is to maximize a…

信息论 · 计算机科学 2025-03-31 Yannan Chen , Yi Feng , Xiaoyang Li , Licheng Zhao , Kaiming Shen

This paper focuses on precoding design in multi-antenna systems with improper Gaussian interference (IGI), characterized by correlated real and imaginary parts. We first study block level precoding (BLP) and symbol level precoding (SLP)…

信号处理 · 电气工程与系统科学 2024-09-12 Lu Liu , Rang Liu , Ly V. Nguyen , A. Lee Swindlehurst

In this paper, we investigate a cell-free massive multiple-input multiple-output system with both access points and user equipments equipped with multiple antennas over the Weichselberger Rayleigh fading channel. We study the uplink…

信息论 · 计算机科学 2023-01-09 Zhe Wang , Jiayi Zhang , Hien Quoc Ngo , Bo Ai , Mérouane Debbah

We revisit the Gaussian broadcast channel (GBC) and explore the rate region achieved by purely discrete inputs with treating interference as noise (TIN) decoding. Specifically, we introduce a simple scheme based on superposition coding with…

信息论 · 计算机科学 2026-04-07 Yujie Shao , Min Qiu

Integrated sensing and communication (ISAC) has been recognized as one of the key technologies capable of simultaneously improving communication and sensing services in future wireless networks. Moreover, the introduction of recently…

信息论 · 计算机科学 2025-12-30 Nemanja Stefan Perović , Keshav Singh , Chih-Peng Li , Octavia A. Dobre , Mark F. Flanagan

In this paper, we propose a novel algorithm to maximize the sum rate in interference-limited scenarios where each user decodes its own message with the presence of unknown interferences and noise considering the…

信息论 · 计算机科学 2015-03-23 Hussein Al-Shatri , Xiang Li , Rakash SivaSiva Ganesan , Anja Klein , Tobias Weber

In this paper, optimal linear precoding for the multibeam geostationary earth orbit (GEO) satellite with the multi-user (MU) multiple-input-multiple-output (MIMO) downlink scenario is addressed. Multiple-user interference is one of the…

We consider the Gaussian interference channel with an intermediate relay as a main building block for cooperative interference networks. On the achievability side, we consider compress-and-forward based strategies. Specifically, a…

信息论 · 计算机科学 2015-03-18 Ye Tian , Aylin Yener

Integrated sensing and communication (ISAC) is a promising technique to provide sensing services in future wireless networks. Numerous existing works have adopted a monostatic radar architecture to realize ISAC, i.e., employing the same…

信息论 · 计算机科学 2023-05-17 Dongfang Xu , Chang Liu , Shenghui Song , Derrick Wing Kwan Ng

Co-channel interference poses a challenge in any wireless communication network where the time-frequency resources are reused over different geographical areas. The interference is particularly diverse in cell-free massive multiple-input…

信号处理 · 电气工程与系统科学 2024-04-19 Mahmoud Zaher , Emil Björnson , Marina Petrova

This paper investigates the idea of exploiting interference among the simultaneous multiuser transmissions in the downlink of multiple antennas systems. Using symbol level precoding, a new approach towards addressing the multiuser…

信息论 · 计算机科学 2015-05-11 Maha Alodeh , Symeon Chatzinotas , Bjorn Ottersten

Downlink spatial intercell interference cancellation (ICIC) is considered for mitigating other-cell interference using multiple transmit antennas. A principle question we explore is whether it is better to do ICIC or simply standard…

信息论 · 计算机科学 2009-09-22 Jun Zhang , Jeffrey G. Andrews