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This paper considers the use of an intelligent reconfigurable surface (IRS) to aid wireless communication systems. The main goal is to compare this emerging technology with conventional decode-and-forward (DF) relaying. Unlike prior…

Information Theory · Computer Science 2022-03-16 Andrea De Jesus Torres , Luca Sanguinetti , Emil Björnson

A status updating system is considered in which a variable length code is used to transmit messages to a receiver over a noisy channel. The goal is to optimize the codewords lengths such that successfully-decoded messages are timely. That…

Information Theory · Computer Science 2021-02-16 Ahmed Arafa , Richard D. Wesel

This paper focuses on the joint synthesis of constant envelope transmit signal and receive filter aimed at optimizing radar performance in signal-dependent interference and spectrally contested-congested environments. To ensure the desired…

Signal Processing · Electrical Eng. & Systems 2022-04-06 Jing Yang , Augusto Aubry , Antonio De Maio , Xianxiang Yu , Guolong Cui

Stacked intelligent metasurfaces (SIM) have recently emerged as a promising technology, which can realize transmit precoding in the wave domain. In this paper, we investigate a SIM-aided integrated sensing and communications system, in…

Information Theory · Computer Science 2024-08-20 Haoxian Niu , Jiancheng An , Anastasios Papazafeiropoulos , Lu Gan , Symeon Chatzinotas , Mérouane Debbah

We study incremental redundancy hybrid ARQ (IR-HARQ) schemes based on punctured, finite-length, LDPC codes. The transmission is assumed to take place over time varying binary erasure channels, such as mobile wireless channels at the…

Information Theory · Computer Science 2012-05-30 Iryna Andriyanova , Emina Soljanin

Hybrid Automatic Repeat Request (HARQ) is a high performance communication protocol, leading to effective use of the wireless channel and the resources with only limited feedback about the channel state information (CSI) to the transmitter.…

Information Theory · Computer Science 2013-12-04 Yi Li , M. Cenk Gursoy , Senem Velipasalar

An iterative detection and decoding (IDD) scheme is proposed for multiuser multiple-antenna systems assisted by an active or a passive Reconfigurable Intelligent Surface (RIS). The proposed approach features an IDD strategy that…

Information Theory · Computer Science 2024-12-17 R. Porto , R. C. de Lamare

In this paper, a novel transmissive reconfigurable intelligent surface (TRIS) transceiver empowered integrated sensing and communications (ISAC) system is proposed for future multi-demand terminals. To address interference management, we…

Information Theory · Computer Science 2024-02-20 Ziwei Liu , Wen Chen , Qingqing Wu , Jinhong Yuan , Shanshan Zhang , Zhendong Li , Jun Li

This work investigates the design of Hybrid Automatic Repeat Request (HARQ) strategies for downlink Rate-Splitting Multiple Access (RSMA). The existence of private and common stream as well as their conditioning for Successive Interference…

Information Theory · Computer Science 2023-09-06 Rafael Cerna Loli , Onur Dizdar , Bruno Clerckx , Petar Popovski

Joint device-to-device (D2D) and cellular communication is a promising technology for enhancing the spectral efficiency of future wireless networks. However, the interference management problem is challenging since the operating devices and…

Signal Processing · Electrical Eng. & Systems 2023-12-08 Ly V. Nguyen , A. Lee Swindlehurst

Integrated sensing and communication (ISAC) is an emerging technology in next-generation communication networks. However, the communication performance of the ISAC system may be severely affected by interference from the radar system if the…

Signal Processing · Electrical Eng. & Systems 2024-08-20 Zhenyu Xue , Yuang Chen , Hancheng Lu , Baolin Chong , Wanqing Long

Edge caching can effectively reduce backhaul burden at core network and increase quality-ofservice at wireless edge nodes. However, the beneficial role of edge caching cannot be fully realized when the offloading link is in deep fade.…

Information Theory · Computer Science 2020-11-10 Yingyang Chen , Miaowen Wen , Ertugrul Basar , Yik-Chung Wu , Li Wang , Weiping Liu

Integrated sensing and communication (ISAC) has been envisioned as a solution to realize the sensing capability required for emerging applications in wireless networks, while efficiently utilizing the available spectral, hardware and energy…

Signal Processing · Electrical Eng. & Systems 2023-05-16 Ziang Liu , Sundar Aditya , Hongyu Li , Bruno Clerckx

In this work, we investigate a coding strategy devised to increase the throughput in hybrid ARQ (HARQ) transmission over block fading channel. In our approach, the transmitter jointly encodes a variable number of bits for each round of…

Information Theory · Computer Science 2016-06-17 Mohammed Jabi , Abdellatif Benyouss , Mael Le Treust , Etienne Pierre-Doray , Leszek Szczecinski

Asynchronous random access (RA) protocols are particularly attractive for their simplicity and avoidance of tight synchronization requirements. Recent enhancements have shown that the use of successive interference cancellation (SIC) can…

Information Theory · Computer Science 2016-07-22 Federico Clazzer , Francisco Lazaro , Gianluigi Liva , Mario Marchese

Beyond diagonal intelligent reflecting surface (BD-IRS) is a new promising IRS architecture for which the reflection matrix is not limited to the diagonal structure as for conventional IRS. In this paper, we study a BD-IRS aided uplink…

Information Theory · Computer Science 2025-06-25 Shuo Zheng , Shuowen Zhang

In this paper, we study an intelligent reflecting surface (IRS)-aided radar-communication (Radcom) system, where the IRS is leveraged to help Radcom base station (BS) transmit the joint of communication signals and radar signals for serving…

Information Theory · Computer Science 2022-03-29 Meng Hua , Qingqing Wu , Chong He , Shaodan Ma , Wen Chen

In device-to-device (D2D) communication under a cell with resource sharing mode the spectrum resource utilization of the system will be improved. However, if the interference generated by the D2D user is not controlled, the performance of…

Networking and Internet Architecture · Computer Science 2025-11-04 Shi Gengtian , Takashi Koshimizu , Megumi Saito , Pan Zhenni , Liu Jiang , Shigeru Shimamoto

This paper investigates a Stacked Intelligent Metasurfaces (SIM)-assisted Integrated Sensing and Communications (ISAC) system. An extended target model is considered, where the BS aims to estimate the complete target response matrix…

Information Theory · Computer Science 2024-05-03 Ziqing Wang , Hongzheng Liu , Jianan Zhang , Rujing Xiong , Kai Wan , Xuewen Qian , Marco Di Renzo , Robert Caiming Qiu

The stacked intelligent metasurface (SIM), comprising multiple layers of reconfigurable transmissive metasurfaces, is becoming an increasingly viable solution for future wireless communication systems. In this paper, we explore the…

Information Theory · Computer Science 2025-04-23 Enyu Shi , Jiayi Zhang , Jiancheng An , Marco Di Renzo , Bo Ai , Chau Yuen
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