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The focus of this paper is on multi-user MIMO transmissions for millimeter wave systems with a hybrid precoding architecture at the base-station. To enable multi-user transmissions, the base-station uses a cell-specific codebook of…

Information Theory · Computer Science 2018-07-04 Miguel R. Castellanos , Vasanthan Raghavan , Jung H. Ryu , Ozge H. Koymen , Junyi Li , David J. Love , Borja Peleato

We present DeepIA, a deep neural network (DNN) framework for enabling fast and reliable initial access for AI-driven beyond 5G and 6G millimeter (mmWave) networks. DeepIA reduces the beam sweep time compared to a conventional exhaustive…

Networking and Internet Architecture · Computer Science 2021-01-07 Tarun S. Cousik , Vijay K. Shah , Tugba Erpek , Yalin E. Sagduyu , Jeffrey H. Reed

This article explores the concepts of online protocol synthesis using Reinforcement Learning (RL). The study is performed in the context of sensor and IoT networks with ultra low complexity wireless transceivers. The paper introduces the…

Networking and Internet Architecture · Computer Science 2023-02-13 Hrishikesh Dutta , Amit Kumar Bhuyan , Subir Biswas

This paper investigates a joint beamforming design in a multiuser multiple-input single-output (MISO) communication network aided with an intelligent reflecting surface (IRS) panel. The symbol-level precoding (SLP) is adopted to enhance the…

Information Theory · Computer Science 2021-09-01 Guangyang Zhang , Chao Shen , Bo Ai , Zhangdui Zhong

We consider a robust beamforming problem where large amount of downlink (DL) channel state information (CSI) data available at a multiple antenna access point (AP) is used to improve the link quality to a user equipment (UE) for beyond-5G…

Information Theory · Computer Science 2023-08-15 Sai Subramanyam Thoota , Joao Vieira , Erik G. Larsson

Integrated Sensing and Communication (ISAC) systems promise to revolutionize wireless networks by concurrently supporting high-resolution sensing and high-performance communication. This paper presents a novel radio access technology (RAT)…

Signal Processing · Electrical Eng. & Systems 2024-10-16 Yulan Gao , Ziqiang Ye , Ming Xiao , Yue Xiao

This paper studies initial beam acquisition in a millimeter wave network consisting of multiple access points (APs) and mobile devices. A training protocol for joint estimation of transmit and receive beams is presented with a general frame…

Signal Processing · Electrical Eng. & Systems 2019-10-14 Hao Zhou , Dongning Guo , Michael L. Honig

Airborne mobile Integrated Sensing and Communication (ISAC) base stations have garnered significant attention recently, with ISAC technology being a crucial application for 6G networks. Since ISAC can sense potential mobile communication…

Performance · Computer Science 2025-08-05 Shengcai Zhou , Luping Xiang , Kun Yang , Kai Kit Wong , Dapeng Oliver Wu , Chan-Byoung Chae

Extremely large-scale reconfigurable intelligent surface (XL-RIS) can effectively overcome severe fading and provide higher communication performance. However, current research on XL-RIS overlooks the discrete phase-shift characteristics of…

Information Theory · Computer Science 2025-08-27 Qian Zhang , Zheng Dong , Zheng Dong , Yao Ge , Yong Liang Guan , Ju Liu , Chau Yuen

In this paper, we are interested in symbiotic radio networks, in which an Internet-of-Things (IoT) network parasitizes in a primary network to achieve spectrum-, energy-, and infrastructure-efficient communications. Specifically, the BS…

Signal Processing · Electrical Eng. & Systems 2019-05-13 Qianqian Zhang , Ying-Chang Liang , H. Vincent Poor

Ensuring reliability in modern software systems requires rigorous pre-production testing across highly heterogeneous and evolving environments. Because exhaustive evaluation is infeasible, practitioners must decide how to allocate limited…

Software Engineering · Computer Science 2025-10-08 Yu Zhu

A fundamental problem arising in dense wireless networks is the high co-channel interference. Interference alignment (IA) was recently proposed as an effective way to combat interference in wireless networks. The concept of IA, though, is…

Networking and Internet Architecture · Computer Science 2017-12-12 Konstantinos Dovelos , Boris Bellalta

In this paper, we develop an algorithm for joint handover and beam tracking in millimeter-wave (mmWave) networks. The aim is to provide a reliable connection in terms of the achieved throughput along the trajectory of the mobile user while…

Systems and Control · Electrical Eng. & Systems 2023-01-16 Sara Khosravi , Hossein S. Ghadikolaei , Jens Zander , Marina Petrova

Integrated access and backhaul (IAB) technology is a flexible solution for network densification. IAB nodes can also be deployed in moving nodes such as buses and trains, i.e., mobile IAB (mIAB). As mIAB nodes can move around the coverage…

This paper investigates a reconfigurable intelligent surface (RIS)-assisted integrated sensing and communication (ISAC) system and proposes a joint communication and sensing beamforming design based on non-orthogonal multiple access (NOMA)…

Information Theory · Computer Science 2025-08-20 Chunjie Wang , Xuhui Zhang , Jinke Ren , Wenchao Liu , Shuqiang Wang , Yanyan Shen , Kejiang Ye , Chengzhong Xu , Dusit Niyato

In IEEE 802.11bc, the broadcast mode on wireless local area networks (WLANs), data rate control that is based on acknowledgement (ACK) mechanism similar to the one in the current IEEE 802.11 WLANs is not applicable because ACK mechanism is…

Networking and Internet Architecture · Computer Science 2022-03-04 T. Kanda , Y. Koda , K. Yamamoto , T. Nishio

Multimodal Large Language Models (MLLMs) have demonstrated remarkable capabilities by integrating visual and textual inputs, yet modality alignment remains one of the most challenging aspects. Current MLLMs typically rely on simple adapter…

Computer Vision and Pattern Recognition · Computer Science 2025-09-08 Yuanyang Yin , Yaqi Zhao , Yajie Zhang , Yuanxing Zhang , Ke Lin , Jiahao Wang , Xin Tao , Pengfei Wan , Wentao Zhang , Feng Zhao

This paper proposes a reinforcement learning (RL)-aided cognitive framework for massive MIMO-based integrated sensing and communication (ISAC) systems employing a uniform planar array (UPA). The focus is on enhancing radar sensing…

Signal Processing · Electrical Eng. & Systems 2025-11-05 Adam Umra , Aya M. Ahmed , Aydin Sezgin

In this paper, we investigate the random access problem for a delay-constrained heterogeneous wireless network. As a first attempt to study this new problem, we consider a network with two users who deliver delay-constrained traffic to an…

Networking and Internet Architecture · Computer Science 2021-07-16 Danzhou Wu , Lei Deng , Zilong Liu , Yijin Zhang , Yunghsiang S. Han

Millimeter-Wave (mm-Wave) frequency bands provide an opportunity for much wider channel bandwidth compared with the traditional sub-6 GHz band. Communication at mm-Waves is, however, quite challenging due to the severe propagation path…

Information Theory · Computer Science 2017-10-19 Xiaoshen Song , Saeid Haghighatshoar , Giuseppe Caire