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This paper proposes a neural-network-assisted deformable matched filtering framework for carrier-less amplitude and phase (CAP) modulation operating under bandwidth-limited channel conditions. Instead of replacing the analytically derived…

信号处理 · 电气工程与系统科学 2026-02-10 Paul Anthony Haigh

Time series classification (TSC) is crucial in numerous real-world applications, such as environmental monitoring, medical diagnosis, and posture recognition. TSC tasks require models to effectively capture discriminative information for…

机器学习 · 计算机科学 2025-12-10 Da Zhang , Bingyu Li , Zhiyuan Zhao , Yanhan Zhang , Junyu Gao , Feiping Nie , Xuelong Li

In this work, we investigate hybrid analog-digital beamforming (HBF) architectures for uplink cell-free (CF) millimeter-wave (mmWave) massive multiple-input multiple-output (MIMO) systems. {We first propose two HBF schemes, namely,…

信息论 · 计算机科学 2021-05-03 Nhan Thanh Nguyen , Kyungchun Lee , Huaiyu Dai

Modern wireless communication networks, particularly cellular networks utilize multiple antennas to improve the capacity and signal coverage. In these systems, typically an active transceiver is connected to each antenna. However, this…

信息论 · 计算机科学 2016-08-24 Vijay Venkateswaran , Florian Pivit , Lei Guan

In this letter, we study the beamforming design for channel estimation of multi-functional reconfigurable intelligent surface (MF-RIS)-aided multi-user communications that supports simultaneous signal reflection, refraction, and…

信号处理 · 电气工程与系统科学 2025-01-22 Zaihao Pan , Wen Wang , Gaofeng Nie , Ailing Zheng , Wanli Ni

This work proposes a mixed learning-based and optimization-based approach to the weighted-sum-rates beamforming problem in a multiple-input multiple-output (MIMO) wireless network. The conventional methods, i.e., the fractional programming…

信息论 · 计算机科学 2026-01-07 Jianhang Zhu , Tsung-Hui Chang , Liyao Xiang , Kaiming Shen

This work proposes a learnable filterbank based on a multi-channel masking framework for multi-channel source separation. The learnable filterbank is a 1D Conv layer, which transforms the raw waveform into a 2D representation. In contrast…

音频与语音处理 · 电气工程与系统科学 2023-03-15 Wang Dai , Archontis Politis , Tuomas Virtanen

With the evolution of mobile communication systems toward large-scale arrays, high-frequency operation, and reconfigurable antenna architectures, fluid antenna systems (FAS) operating in the near-field (NF) regime provide new degrees of…

信息论 · 计算机科学 2026-05-12 Peng Zhang , Jian Dang , Miaowen Wen , Ziyang Liu , Chen Zhao , Huaifeng Shi , Chengsheng Pan , Zaichen Zhang

Filter bank multi-carrier (FBMC) offers superior spectral properties compared to cyclic-prefix orthogonal frequency-division multiplexing (CP-OFDM), at the cost of an inherent shortcoming in dispersive channels called intrinsic imaginary…

信号处理 · 电气工程与系统科学 2019-01-07 Hosseinali Jamal , David W. Matolak

This paper introduces filter bank multicarrier (FBMC) as a potential candidate in the application of massive MIMO communication. It also points out the advantages of FBMC over OFDM (orthogonal frequency division multiplexing) in the…

信息论 · 计算机科学 2014-02-25 Arman Farhang , Nicola Marchetti , Linda E. Doyle , Behrouz Farhang-Boroujeny

Convolutional Neural Network (CNN)-based filters have achieved significant performance in video artifacts reduction. However, the high complexity of existing methods makes it difficult to be applied in real usage. In this paper, a CNN-based…

图像与视频处理 · 电气工程与系统科学 2020-09-08 Chao Liu , Heming Sun , Jiro Katto , Xiaoyang Zeng , Yibo Fan

Millimeter wave communications require multibeam beamforming in order to utilize wireless channels that suffer from obstructions, path loss, and multi-path effects. Digital multibeam beamforming has maximum degrees of freedom compared to…

Due to the heavy reliance of millimeter-wave (mmWave) wireless systems on directional links, beamforming (BF) with high-dimensional arrays is essential for cellular systems in these frequencies. How to perform the array processing in a…

This paper proposes a robust reduced-rank scheme for adaptive beamforming based on joint iterative optimization (JIO) of adaptive filters. The novel scheme is designed according to the constant modulus (CM) criterion subject to different…

信息论 · 计算机科学 2013-01-30 Lei Wang , Rodrigo C. de Lamare

In this paper we describe the overall idea and results of a recently proposed radio access technique based on filter bank multicarrier (FBMC) communication system using two orthogonal polarizations: dual-polarization FBMC (DP-FBMC). Using…

信号处理 · 电气工程与系统科学 2020-05-26 Hosseinali Jamal , David W. Matolak

We present a novel method to provide efficient and highly detailed reconstructions. Inspired by wavelets, we learn a neural field that decompose the signal both spatially and frequency-wise. We follow the recent grid-based paradigm for…

计算机视觉与模式识别 · 计算机科学 2023-08-25 Zhijie Wu , Yuhe Jin , Kwang Moo Yi

Orthogonal frequency division multiplexing (OFDM) has been recently recognized as inadequate to meet the increased requirements of the next generation of communication systems. A number of alternative modulation solutions, based on the use…

信息论 · 计算机科学 2016-07-14 Konstantinos Maliatsos , Eleftherios Kofidis , Athanasios Kanatas

Hybrid analog and digital BeamForming (HBF) is one of the enabling transceiver technologies for millimeter Wave (mmWave) Multiple Input Multiple Output (MIMO) systems. This technology offers highly directional communication, which is able…

信息论 · 计算机科学 2021-01-19 George C. Alexandropoulos , Ioanna Vinieratou , Mattia Rebato , Luca Rose , Michele Zorzi

Quantum frequency conversion (QFC) between the visible and telecom is a key functionality to connect quantum memories over long distances in fiber-based quantum networks. Current QFC methods for linking such widely-separated frequencies,…

光学 · 物理学 2022-07-21 Xiyuan Lu , Gregory Moille , Ashutosh Rao , Kartik Srinivasan

In this paper, we investigate downlink co-frequency interference (CFI) mitigation in non-geostationary satellites orbits (NGSOs) co-existing systems. Traditional mitigation techniques, such as Zero-forcing (ZF), produce a null towards the…

信号处理 · 电气工程与系统科学 2025-10-28 Almoatssimbillah Saifaldawla , Eva Lagunas , Flor Ortiz , Abuzar B. M. Adam , Symeon Chatzinotas