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Transformer-based methods have achieved impressive results in time series forecasting. However, existing Transformers still exhibit limitations in sequence modeling as they tend to overemphasize temporal dependencies. This incurs additional…

机器学习 · 计算机科学 2025-12-16 Tan Wang , Yun Wei Dong , Qi Wang

In this paper, we consider multi-quality multicast beamforming of a video stream from a multi-antenna base station (BS) to multiple single-antenna users receiving different qualities of the same video stream, via scalable video coding…

信息论 · 计算机科学 2017-07-18 Chengjun Guo , Ying Cui , Derrick Wing Kwan Ng , Zhi Liu

The beamforming techniques have been recently studied as possible enablers for underlay spectrum sharing. The existing beamforming techniques have several common limitations: they are usually system model specific, cannot operate with…

For massive MIMO public channel with any sector size in either microwave or millimeter wave (mmwave) band, this paper studies the beamforming design to minimize the transmit power while guaranteeing the quality of service (QoS) for randomly…

信息论 · 计算机科学 2017-09-26 Cheng Zhang , Yongming Huang , Yindi Jing , Luxi Yang

This paper studies fast downlink beamforming algorithms using deep learning in multiuser multiple-input-single-output systems where each transmit antenna at the base station has its own power constraint. We focus on the…

信息论 · 计算机科学 2020-03-02 Juping Zhang , Wenchao Xia , Minglei You , Gan Zheng , Sangarapillai Lambotharan , Kai-Kit Wong

Edge machine learning can deliver low-latency and private artificial intelligent (AI) services for mobile devices by leveraging computation and storage resources at the network edge. This paper presents an energy-efficient edge processing…

信息论 · 计算机科学 2020-03-03 Kai Yang , Yuanming Shi , Wei Yu , Zhi Ding

In this paper, assuming multi-antenna transmitter and receivers, we consider multicast beamformer design for the weighted max-min-fairness (WMMF) problem in a multi-stream multi-group communication setup. Unlike the single-stream scenario,…

信息论 · 计算机科学 2021-05-21 Hamidreza Bakhshzad Mahmoodi , Bikshapathi Gouda , MohammadJavad Salehi , Antti Tolli

Next-generation wireless networks need to handle massive user access effectively. This paper addresses the problem of joint group scheduling and multicast beamforming for downlink transmission with many active user groups. Aiming to…

信息论 · 计算机科学 2024-06-26 Chong Zhang , Min Dong , Ben Liang , Ali Afana , Yahia Ahmed

This paper investigates the optimization of the long-standing probabilistically robust transmit beamforming problem with channel uncertainties in the multiuser multiple-input single-output (MISO) downlink transmission. This problem poses…

信息论 · 计算机科学 2024-06-06 Kai Liang , Gan Zheng , Zan Li , Kai-Kit Wong , Chan-Byoung Chae

This paper introduces a novel quantum-based method for dynamic beamforming and re-forming in Unmanned Aircraft Systems (UASs), specifically addressing the critical challenges posed by the unavoidable hovering characteristics of UAVs.…

信号处理 · 电气工程与系统科学 2024-01-30 Sudhanshu Arya , Ying Wang

Aiming at maximizing the energy efficiency (EE) of multicast multibeam satellite communications, we consider the precoding design under the total power and quality of service (QoS) constraints. Since the original EE maximization problem is…

信号处理 · 电气工程与系统科学 2020-02-19 Chenhao Qi , Huajian Chen , Yansha Deng , Nallanathan Arumugam

Immersive virtual reality (VR) applications require ultra-high data rate and low-latency for smooth operation. Hence in this paper, aiming to improve VR experience in multi-user VR wireless video streaming, a deep-learning aided scheme for…

信息论 · 计算机科学 2020-01-13 Cristina Perfecto , Mohammed S. Elbamby , Javier Del Ser , Mehdi Bennis

This paper considers a multi-antenna multicast system with programmable metasurface (PMS) based transmitter. Taking into account of the finite-resolution phase shifts of PMSs, a novel beam training approach is proposed, which achieves…

信息论 · 计算机科学 2020-02-21 Xiaoling Hu , Caijun Zhong , Yongxu Zhu , Xiaoming Chen , Zhaoyang Zhang

This paper considers the design of beamforming for orthogonal time frequency space modulation assisted non-orthogonal multiple access (OTFS-NOMA) networks, in which a high-mobility user is sharing the spectrum with multiple low-mobility…

信息论 · 计算机科学 2019-11-01 Zhiguo Ding

This paper considers hybrid beamforming (HB) for downlink multiuser massive multiple input multiple output (MIMO) systems with frequency selective channels. For this system, first we determine the required number of radio frequency (RF)…

信息论 · 计算机科学 2016-11-18 Tadilo Endeshaw Bogale , Long Bao Le , Afshin Haghighat , Luc Vandendorpe

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…

信息论 · 计算机科学 2016-11-03 Dengkui Zhu , Boyu Li , Ping Liang

The conventional digital beamforming technique needs one radio frequency (RF) chain per antenna element. High power consumption, significantly high cost of RF chain components per antenna and complex signal processing task at base band…

信号处理 · 电气工程与系统科学 2025-04-25 Om Nath Acharya , Ram Kaji Budhathoki , Santosh Shaha

Massive Multiple-input Multiple-output (MIMO) adaption is one of the primary evolving objectives for the next generation high speed train (HST) communication system. In this paper, we consider how to design an efficient low-complexity…

信息论 · 计算机科学 2017-03-16 Xuhong Chen , Pingyi Fan

Distributed optimization concerns the optimization of a common function in a distributed network, which finds a wide range of applications ranging from machine learning to vehicle platooning. Its key operation is to aggregate all local…

信息论 · 计算机科学 2022-04-15 Zhenyi Lin , Yi Gong , Kaibin Huang

Hybrid beamforming is a promising technology for 5G millimetre-wave communications. However, its implementation is challenging in practical multiple-input multiple-output (MIMO) systems because non-convex optimization problems have to be…

信号处理 · 电气工程与系统科学 2021-07-09 Hamed Hojatian , Vu Nguyen Ha , Jérémy Nadal , Jean-François Frigon , François Leduc-Primeau