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A variable-phase-shifter (VPS) architecture with hybrid precoding for mixture use of phase shifters and switches, is proposed for millimeter wave massive multiple-input multiple-output communications. For the VPS architecture, a hybrid…

Information Theory · Computer Science 2022-08-02 Chenhao Qi , Qiang Liu , Xianghao Yu , Geoffrey Ye Li

As high-throughput sequencers become standard equipment outside of sequencing centers, there is an increasing need for efficient methods for pre-processing and primary analysis. While a vast literature proposes methods for HTS data…

Computational Engineering, Finance, and Science · Computer Science 2014-04-11 Md Pavel Mahmud , Alexander Schliep

In recent years, anchor and hash-based multi-view clustering methods have gained attention for their efficiency and simplicity in handling large-scale data. However, existing methods often overlook the interactions among multi-view data and…

Machine Learning · Computer Science 2024-12-30 Zhongwen Wang , Xingfeng Li , Yinghui Sun , Quansen Sun , Yuan Sun , Han Ling , Jian Dai , Zhenwen Ren

Hybrid precoding is a promising technique for mmWave massive MIMO systems, as it can considerably reduce the number of required radio-frequency (RF) chains without obvious performance loss. However, most of the existing hybrid precoding…

Information Theory · Computer Science 2017-08-25 Xinyu Gao , Linglong Dai , Ying Sun , Shuangfeng Han , I Chih-Lin

Hybrid beamforming (HB) has been widely studied for reducing the number of costly radio frequency (RF) chains in massive multiple-input multiple-output (MIMO) systems. However, previous works on HB are limited to a single user equipment…

Information Theory · Computer Science 2016-11-03 Dengkui Zhu , Boyu Li , Ping Liang

This paper details the design of precoders for a MIMO radar spectrally coexistent with a MIMO cellular network. We focus on a coordinated multi-point (CoMP) system where a cluster of base stations (BSs) coordinate their transmissions to the…

Information Theory · Computer Science 2015-03-17 Jasmin A. Mahal , Awais Khawar , Ahmed Abdelhadi , T. Charles Clancy

This paper proposes a joint optimization framework for energy-efficient linear precoding and feeder-link-beam matching design in a multi-gateway multi-beam bent-pipe satellite communication system. The proposed scheme jointly optimizes the…

Signal Processing · Electrical Eng. & Systems 2024-03-14 Vu Nguyen Ha , Juan Carlos Merlano Duncan , Eva Lagunas , Jorge Querol , Symeon Chatzinotas

Terahertz (THz) band communication has been widely studied to meet the future demand for ultra-high capacity. In addition, multi-input multi-output (MIMO) technique and non-orthogonal multiple access (NOMA) technique with multi-antenna also…

Signal Processing · Electrical Eng. & Systems 2020-05-05 Haijun Zhang , Haisen Zhang , Wei liu , Keping Long , Jiangbo Dong , Victor C. M. Leung

A clustered base transceiver station (BTS) coordination strategy is proposed for a large cellular MIMO network, which includes full intra-cluster coordination to enhance the sum rate and limited inter-cluster coordination to reduce…

Information Theory · Computer Science 2008-08-29 Jun Zhang , Runhua Chen , Jeffrey G. Andrews , Arunabha Ghosh , Robert W. Heath

Instead of merely improving the spectral efficiency (SE), improving the energy efficiency (EE) is another important concern for multibeam satellite systems, due to the power constraint of satellites. However, so far there has been no…

Signal Processing · Electrical Eng. & Systems 2019-01-08 Chenhao Qi , Xin Wang

In this article, we propose an index modulation system suitable for optical communications, where the intensity of the light is modulated along the time, space and frequency dimensions, building a Frequency-Hopping Spatial Multi-Pulse…

Information Theory · Computer Science 2020-04-22 Francisco J. Escribano , Alexandre Wagemakers , Georges Kaddoum , Joao V. C. Evangelista

Mass spectrometry-based proteomics is a key enabler for personalized healthcare, providing a deep dive into the complex protein compositions of biological systems. This technology has vast applications in biotechnology and biomedicine but…

Quantitative Methods · Quantitative Biology 2023-11-23 Sumukh Pinge , Weihong Xu , Jaeyoung Kang , Tianqi Zhang , Neima Moshiri , Wout Bittremieux , Tajana Rosing

A centralized coordinated multipoint downlink joint transmission in a frequency division duplex system requires channel state information (CSI) to be fed back from the cell-edge users to their serving BS, and aggregated at the central…

Information Theory · Computer Science 2015-03-27 T. R. Lakshmana , A. Tölli , R. Devassy , T. Svensson

We propose a novel randomized channel sparsifying hybrid precoding (RCSHP) design to reduce the signaling overhead of channel estimation and the hardware cost and power consumption at the base station (BS), in order to fully harvest…

Signal Processing · Electrical Eng. & Systems 2024-10-30 Chang Tian , An Liu , Mahdi Barzegar Khalilsarai , Giuseppe Caire , Wu Luo , Minjian Zhao

Spectral clustering is one of the most popular clustering methods. However, the high computational cost due to the involved eigen-decomposition procedure can immediately hinder its applications in large-scale tasks. In this paper we use…

Machine Learning · Computer Science 2023-01-24 Yongyu Wang

A novel over-the-air machine learning framework over multi-hop multiple-input and multiple-output (MIMO) networks is proposed. The core idea is to imitate fully connected (FC) neural network layers using multiple MIMO channels by carefully…

Signal Processing · Electrical Eng. & Systems 2025-05-02 Chenghong Bian , Meng Hua , Deniz Gunduz

The use of communication satellites in medium Earth orbit (MEO) is foreseen to provide quasi-global broadband Internet connectivity in the coming networking ecosystems. Multi-user multiple-input single-output (MU-MISO) digital signal…

We investigate the design of a broadcast system where the aim is to maximise the throughput. This task is usually challenging due to the channel variability. Modern satellite communications systems such as DVB-SH and DVB-S2 mainly rely on…

Networking and Internet Architecture · Computer Science 2012-01-18 Hugo Meric , Jérôme Lacan , Fabrice Arnal , Guy Lesthievent , Marie-Laure Boucheret

This paper investigates the hybrid precoding design for millimeter wave (mmWave) multiple-input multiple-output (MIMO) systems with finite-alphabet inputs. The precoding problem is a joint optimization of analog and digital precoders, and…

Signal Processing · Electrical Eng. & Systems 2020-03-27 Juening Jin , Yahong Rosa Zheng , Wen Chen , Chengshan Xiao

We investigate the design of a broadcast system in order to maximise the throughput. This task is usually challenging due to the channel variability. Forty years ago, Cover introduced and compared two schemes: time sharing and superposition…

Networking and Internet Architecture · Computer Science 2015-03-19 Hugo Meric , Jérôme Lacan , Fabrice Arnal , Guy Lesthievent , Marie-Laure Boucheret