Search · four archives
Search · four archives
16 papers · ranked by Valyu relevance
Xiaotong Zhao, Xin Guan, Mian Li, Qingjiang Shi
—Conventional uplink equalization in massive MIMO systems relies on a centralized baseband processing architecture. However, as the number of base station antenna increases, centralized baseband processing architectures encounter two bottlenecks, i.e., the tremendous data interconnection and the highdimensional…
Zeyan Zhuang, Xin Zhang, Dongfang Xu, Shenghui Song + 1 more
'Yonina C. Eldar'] Abstract—Centralized baseband processing (CBP) is required to achieve the full potential of massive multiple-input multipleoutput (MIMO) systems. However, due to the large number of antennas, CBP suffers from two major issues: 1) Tremendous data interconnection between radio frequency (RF) circuitry…
Brikena Kaziu, Nikita Shanin, Danilo Spano, Li Wang + 2 more
'Wolfgang Gerstacker' 'Robert Schober'] Abstract—Massive multi-user multiple-input multiple-output (MU-MIMO) systems enable high spatial resolution, high spectral efficiency, and improved link reliability compared to traditional MIMO systems due to the large number of antenna elements deployed at the base station (BS).…
Tianyi Liao, Wei Guo, Hengtao He, Shenghui Song + 2 more
'Khaled B. Letaief'] Abstract—The fluid antenna system (FAS) has emerged as a disruptive technology, offering unprecedented degrees of freedom (DoF) for wireless communication systems. However, optimizing fluid antenna (FA) positions entails significant computational costs, especially when the number of FAs is large.…
Xingyu Zhou, Le Liang, Jing Zhang, Chao-Kai Wen + 1 more
—Massive multiple-input multiple-output (MIMO) technology has significantly enhanced spectral and power efficiency in cellular communications and is expected to further evolve towards extra-large-scale MIMO. However, centralized processing for massive MIMO faces practical obstacles, including excessive computational…
Juan Vidal Alegría, Ove Edfors
—The increase in the number of base station (BS) antennas calls for efficient solutions to deal with the increased interconnection bandwidth and processing complexity of traditional centralized approaches. Decentralized approaches are thus gaining momentum, since they achieve important reductions in data/processing…
Randy Verdecia-Peña, José I. Alonso, Francesco Verde, Donatella Darsena
'Donatella Darsena'] Software defined radio (SDR) is a commonly used platform for its ease of operation and cost-effectiveness for the development and testing of real wireless communication systems. By supporting high transmission rates and enabling fast and cost-effective deployments, mainly in millimeter-wave…
T. Ssettumba, Zhichao Shao, Lukas T. N. Landau, Rodrigo C. de Lamare
—In this paper, we propose iterative interference cancellation schemes with access points selection (APs-Sel) for cellfree massive multiple-input multiple-output (CF-mMIMO) systems. Closed-form expressions for centralized and decentralized linear minimum mean square error (LMMSE) receive filters wit h APs-Sel are…
Sébastien Roy
The seminal paper by Marzetta introduced the concept of massive MIMO (mMIMO) in 2010, generating immediate interest and numerous other papers (e.g., ). It is a departure from the previous multi-user MIMO (MU-MIMO) systems in that a large number of antennas at the base station serve a relatively small number of…
E. Meyer, D. Kruglov, M. Krivic, M. Tanveer + 42 more
'Y. Zhang' 'A. Briseno Ojeda' 'K. Smirnova' 'K. Alekseev' 'M. Safari Mugisho' 'B. Cimbili' 'N. Farid' 'Y. Dang' 'M. Shahid' 'M. Ensan' 'J. Banar' 'H. Bao' 'M. Matters-Kammerer' 'U. Gustavsson' 'F. Demuynck' 'T. Zwick' 'M. Acar' 'C. Fager' 'M. van der Heijden' 'M. Ivashina' 'D. Caratelli' 'M. Hasselblad' 'C. Ulusoy'…
Hafiz Muhammad Tahir Mustafa, Jung-In Baik, Hyoung-Kyu Song, Muhammad Adnan + 2 more
'Muhammad Adnan' 'Waqar Majeed Awan' 'Davy P. Gaillot'] This paper proposes a cognitive radio network (CRN)-based hybrid wideband precoding for maximizing spectral efficiency in millimeter-wave relay-assisted multi-user (MU) multiple-input multiple-output (MIMO) systems. The underlying problem is NP-hard and non-convex…
Swetha Pinjerla, Surampudi Srinivasa Rao, P Chandrasekhar Reddy
In real-time digital signal processing, the multirate transformation is a commonly used technique for interpolation and decimation. Comb-based decimation filters are used in wireless applications because of their minimal complexity and effective alias suppression. One symmetrical Finite Impulse Response (FIR) filter…
Debbrata K. Saha, Rogers F. Silva, Bradley T. Baker, Rekha Saha + 1 more
The examination of multivariate brain morphometry patterns has gained attention in recent years, especially for their powerful exploratory capabilities in the study of differences between patients and controls. Among many existing methods and tools for analysis of brain anatomy based on structural magnetic resonance…
Sunitha Basodi, Rajikha Raja, Harshvardhan Gazula, Javier Tomas Romero + 4 more
Performing group analysis on magnetic resonance imaging (MRI) data with linear mixed-effects (LME) models is challenging due to its large dimensionality and inherent multi-level covariance structure. In addition, as large-scale collaborative projects become commonplace in neuroimaging, data must increasingly be stored…
Ziliang Jia, Hongxia Liu, José de Jesús Rangel Magdaleno
The paper proposes an enhanced design for broadband digital receivers that aims to improve signal capture probability, real-time performance, and the hardware development cycle. To overcome the issue of false signals in the blind zone channelization structure, this paper introduces an improved joint-decision…
Lorenzo Mucchi, Shahriar Shahabuddin, Mahmoud A. M. Albreem, Saeed Abdallah + 3 more
'Saeed Abdallah' 'Stefano Caputo' 'Erdal Panayirci' 'Markku Juntti'] 6G networks have the burden to provide not only higher performance compared to 5G, but also to enable new service domains as well as to open the door over a new paradigm of mobile communication. This paper presents an overview on the role and key…