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Future railway is expected to accommodate both train operation services and passenger broadband services. The millimeter wave (mmWave) communication is a promising technology in providing multi-gigabit data rates to onboard users. However,…

信息论 · 计算机科学 2020-07-03 Meilin Gao , Bo Ai , Yong Niu , Wen Wu , Peng Yang , Feng Lyu , Xuemin , Shen

On the heels of orthogonal time frequency space (OTFS) modulation, the recently discovered affine frequency division multiplexing (AFDM) is a promising waveform for the sixth-generation wireless network. In this paper, we study the…

信息论 · 计算机科学 2023-08-29 Haoran Yin , Xizhang Wei , Yanqun Tang , Kai Yang

Fixed low-resolution Analog to Digital Converters (ADC) help reduce the power consumption in millimeter-wave Massive Multiple-Input Multiple-Output (Ma-MIMO) receivers operating at large bandwidths. However, they do not guarantee optimal…

信号处理 · 电气工程与系统科学 2021-04-13 I. Zakir Ahmed , Hamid Sadjadpour , Shahram Yousefi

Block matching (BM) motion estimation plays a very important role in video coding. In a BM approach, image frames in a video sequence are divided into blocks. For each block in the current frame, the best matching block is identified inside…

神经与进化计算 · 计算机科学 2014-07-02 Erik Cuevas , Daniel Zaldivar , Marco Perez , Humberto Sossa , Valentin Osuna

Coordinate networks like Multiplicative Filter Networks (MFNs) and BACON offer some control over the frequency spectrum used to represent continuous signals such as images or 3D volumes. Yet, they are not readily applicable to problems for…

计算机视觉与模式识别 · 计算机科学 2022-10-28 Shayan Shekarforoush , David B. Lindell , David J. Fleet , Marcus A. Brubaker

Microbial fuel cells (MFCs) perform wastewater treatment and electricity production through the conversion of organic matter using microorganisms. For practical applications, it has been suggested that greater efficiency can be achieved by…

神经与进化计算 · 计算机科学 2022-12-05 Richard J. Preen , Jiseon You , Larry Bull , Ioannis A. Ieropoulos

This paper proposes the multi objective variant of the recently introduced fitness dependent optimizer (FDO). The algorithm is called a Multi objective Fitness Dependent Optimizer (MOFDO) and is equipped with all five types of knowledge…

神经与进化计算 · 计算机科学 2023-02-14 Jaza M. Abdullah , Tarik A. Rashid , Bestan B. Maaroof , Seyedali Mirjalili

This letter addresses a multivariate optimization problem for linear movable antenna arrays (MAAs). Particularly, the position and beamforming vectors of the under-investigated MAA are optimized simultaneously to maximize the minimum…

信息论 · 计算机科学 2024-09-09 Manh Kha Hoang , Tuan Anh Le , Kieu-Xuan Thuc , Tong Van Luyen , Xin-She Yang , Derrick Wing Kwan Ng

Multi-frame algorithms for single-channel speech enhancement are able to take advantage from short-time correlations within the speech signal. Deep filtering (DF) recently demonstrated its capabilities for low-latency scenarios like hearing…

音频与语音处理 · 电气工程与系统科学 2023-05-16 Hendrik Schröter , Tobias Rosenkranz , Alberto N. Escalante-B. , Andreas Maier

Communication at millimeter wave (mmWave) bands is expected to become a key ingredient of next generation (5G) wireless networks. Effective mmWave communications require fast and reliable methods for beamforming at both the User Equipment…

信息论 · 计算机科学 2018-06-19 Xiaoshen Song , Saeid Haghighatshoar , Giuseppe Caire

This paper considers coordinated multicast beamforming in a multi-cell wireless network. Each multiantenna base station (BS) serves multiple groups of single antenna users by generating a single beam with common data per group. The aim is…

信息论 · 计算机科学 2016-11-17 Harri Pennanen , Dimitrios Christopoulos , Symeon Chatzinotas , Björn Ottersten

For the existing near-field multiuser communications based on hybrid beamforming (HBF) architectures, high-quality effective channel estimation is required to obtain the channel state information (CSI) for the design of the digital…

信息论 · 计算机科学 2024-12-09 Ying Wang , Chenhao Qi

In this paper, we address the challenge of Markov Chain Monte Carlo (MCMC) algorithms within the approximate Bayesian Computation (ABC) framework, which often get trapped in local optima due to their inherent local exploration mechanism. We…

统计计算 · 统计学 2025-12-16 Xuefei Cao , Shijia Wang , Yongdao Zhou

Future cellular systems based on the use of millimeter waves will heavily rely on the use of antenna arrays both at the transmitter and at the receiver. For complexity reasons and energy consumption issues, fully digital precoding and…

信息论 · 计算机科学 2018-02-02 Stefano Buzzi , Carmen D'Andrea

In this paper we propose a network aware approach for routing in graded network using Artificial Bee Colony (ABC) algorithm. ABC has been used as a good search process for optimality exploitation and exploration. The paper shows how ABC…

网络与互联网体系结构 · 计算机科学 2014-08-06 Kavitha Sooda , T. R. Gopalakrishnan Nair

A practical approach to optimal design of multichannel oversampled warped cosine-modulated filter banks (CMFB) is proposed. Warped CMFB is obtained by allpass transformation of uniform CMFB. The paper addresses the problems of minimization…

信息论 · 计算机科学 2020-03-26 Maxim Vashkevich , Wanggen Wan , Alexander Petrovsky

This paper investigates the design of analog beamforming at the receiver in millimeter-wave (mmWave) multiple-input multiple-output (MIMO) systems, aided by full digital chains featuring 1-bit ADCs. We advocate utilizing these full digital…

信号处理 · 电气工程与系统科学 2025-02-18 Lina Liu , Weimin Xiao , Jialing Liu , Zhigang Rong

Studies of superdirective dielectric lens antennas are reported emphasizing unidirectional properties. The developed antennas are based on the higher-order transverse electric and magnetic modes present in a multilayered sphere realized…

光学 · 物理学 2025-05-13 Asbjørn T. Birch , Samel Arslanagić , Richard W. Ziolkowski

This paper develops a new deep neural network optimized equalization framework for massive multiple input multiple output orthogonal frequency division multiplexing (MIMOOFDM) systems that employ low-resolution analog-to-digital converters…

信号处理 · 电气工程与系统科学 2020-05-26 Lei Chu , Ling Pei , Husheng Li , Robert Caiming Qiu

In this paper, we investigate the problem of beam alignment in millimeter wave (mmWave) systems, and design an optimal algorithm to reduce the overhead. Specifically, due to directional communications, the transmitter and receiver beams…

信息论 · 计算机科学 2017-12-29 Morteza Hashemi , Ashutosh Sabharwal , C. Emre Koksal , Ness B. Shroff