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In this paper, a novel low-complexity adaptive decision feedback detection with parallel decision feedback and constellation constraints (P-DFCC) is proposed for multiuser MIMO systems. We propose a constrained constellation map which…

Information Theory · Computer Science 2013-02-26 Peng Li , Rodrigo C. de Lamare

Coordinated beamforming (Co-BF) is a key multi-access-point coordination (MAPC) technique for dense Wi-Fi deployments, but its performance can be hindered by the large channel state information (CSI) feedback required through channel…

Networking and Internet Architecture · Computer Science 2026-04-16 Ibrahim Aboushehada , Boris Bellalta , Giovanni Geraci , Lorenzo Galati Giordano

Multi-agent debate often wastes compute by using a fixed adversarial stance, aggregating without deliberation, or stopping on heuristics. We introduce MACI, an active controller with two independent dials that decouple information from…

Artificial Intelligence · Computer Science 2025-10-07 Edward Y. Chang , Ethan Y. Chang

This paper investigates multi-target detection in an integrated sensing and communication (ISAC) system within a cell-free massive MIMO (CF-mMIMO) framework. We adopt a user-centric approach for communication user equipments (UEs) and a…

Signal Processing · Electrical Eng. & Systems 2025-07-24 Zinat Behdad , Ozlem Tugfe Demir , Ki Won Sung , Cicek Cavdar

A photonic approach for radio-frequency (RF) self-interference cancellation (SIC) incorporated in an in-band full-duplex radio-over-fiber system is proposed. A dual-polarization binary phase-shift keying modulator is used for…

Signal Processing · Electrical Eng. & Systems 2022-04-27 Taixia Shi , Yu Chen , Yang Chen

Channel state information (CSI) feedback is necessary for the frequency division duplexing (FDD) multiple input multiple output (MIMO) systems due to the channel non-reciprocity. With the help of deep learning, many works have succeeded in…

Information Theory · Computer Science 2023-02-07 Zhilin Lu , Xudong Zhang , Rui Zeng , Jintao Wang

To fully unlock the benefits of multiple-input multiple-output (MIMO) networks, downlink channel state information (CSI) is required at the base station (BS). In frequency division duplex (FDD) systems, the CSI is acquired through a…

Information Theory · Computer Science 2023-05-23 Matteo Nerini , Valentina Rizzello , Michael Joham , Wolfgang Utschick , Bruno Clerckx

In this letter, we propose an iterative soft interference cancellation scheme for intra-cluster (ICL) and out-of-cluster (OCL) interference mitigation in user-centric clustered cell-free massive multiple-antenna networks. We propose a…

Information Theory · Computer Science 2024-12-17 T. Ssettumba , S. Mashdour , L. Landau , P. da Silva , R. C. de Lamare

Interference alignment (IA) is a widely recognized approach for mitigating inter-cell interference in multi-user multiple-input multiple-output (MIMO) networks. Despite its effectiveness, practical deployment remains constrained by two…

Signal Processing · Electrical Eng. & Systems 2026-04-30 Samitha Gunarathne , Eslam Eldeeb , Nurul Huda Mahmood , Italo Atzeni

Motivated by the demand for energy-efficient communication solutions in the next generation cellular network, a mixed-ADC receiver architecture for massive multiple input multiple output (MIMO) systems is proposed, which differs from…

Information Theory · Computer Science 2015-07-28 Ning Liang , Wenyi Zhang

This correspondence studies the downlink transmission in a multi-cell system, where multiple base stations (BSs) each with multiple antennas cooperatively design their respective transmit beamforming vectors to optimize the overall system…

Information Theory · Computer Science 2015-05-14 Rui Zhang , Shuguang Cui

This paper introduces a sensing management method for integrated sensing and communications (ISAC) in cell-free massive multiple-input multiple-output (MIMO) systems. Conventional communication systems employ channel estimation procedures…

Signal Processing · Electrical Eng. & Systems 2025-10-09 Eren Berk Kama , Murat Babek Salman , Isaac Skog , Emil Björnson

This paper considers a multiple-input-multiple-output (MIMO) system with low-resolution analog-to-digital converters (ADCs). In this system, we propose a novel communication framework that is inspired by supervised learning. The key idea of…

Information Theory · Computer Science 2020-08-07 Yo-Seb Jeon , Song-Nam Hong , Namyoon Lee

The efficacy of massive multiple-input multiple-output (MIMO) techniques heavily relies on the accuracy of channel state information (CSI) in frequency division duplexing (FDD) systems. Many works focus on CSI compression and quantization…

Signal Processing · Electrical Eng. & Systems 2024-05-31 Xinran Sun , Zhengming Zhang , Luxi Yang

This paper presents an initial investigation into the combination of integrated sensing and communication (ISAC) and massive communication, both of which are largely regarded as key scenarios in sixth-generation (6G) wireless networks.…

Signal Processing · Electrical Eng. & Systems 2025-10-17 Junyuan Gao , Weifeng Zhu , Shuowen Zhang , Yongpeng Wu , Jiannong Cao , Giuseppe Caire , Liang Liu

This study investigates subarray-level movable antenna (MA) architecture for multi-user MIMO (MU-MIMO) systems. Unlike conventional systems with fixed-position antennas (FPAs), the proposed scheme harnesses the additional positional degrees…

Signal Processing · Electrical Eng. & Systems 2026-04-22 Shanshan Zhang , Songjie Yang , Wenxuan Zhang , Youzhi Xiong , Siya Yao

Millimeter-wave (mmWave) massive multiple-input multiple-output (MIMO) systems have been considered as one of the primary candidates for the fifth generation (5G) and beyond 5G wireless communication networks to satisfy the ever-increasing…

Signal Processing · Electrical Eng. & Systems 2021-04-02 Asil Koc , Tho Le-Ngoc

The integrated sensing and communications (ISAC) can achieve the sharing of hardware and spectrum resources, enabling efficient data transmission and environmental sensing. This fusion is particularly important for unmanned aerial vehicle…

Signal Processing · Electrical Eng. & Systems 2025-10-20 Yi Tao , Zhen Gao , Zhuoran Li , Ziwei Wan , Tuan Li , Chunli Zhu , Lei Chen , Guanghui Wen , Dezhi Zheng , Dusit Niyato

This work presents blind constrained constant modulus (CCM) adaptive algorithms based on the set-membership filtering (SMF) concept and incorporates dynamic bounds {for interference suppression} applications. We develop stochastic gradient…

Information Theory · Computer Science 2015-06-12 Rodrigo C. de Lamare , Paulo S. R. Diniz

In this paper, we study the interference cancellation capabilities of receivers and transmitters in multiple-input-multiple-output (MIMO) systems using theoretical calculations and numerical simulations in Quadriga. We study so-called…

Information Theory · Computer Science 2022-02-02 Dmitry Mineev , Evgeny Bobrov , Viktor Kuznetsov