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This paper focuses on a new path division multiple access (PDMA) for both uplink (UL) and downlink (DL) massive multiple-input multiple-output network over a high mobility scenario, where the orthogonal time frequency space (OTFS) is…

信号处理 · 电气工程与系统科学 2020-03-19 Muye Li , Shun Zhang , Feifei Gao , Pingzhi Fan , Octavia A. Dobre

In this correspondence, we investigate an intelligent reflective surface (IRS) assisted downlink ultra-reliable and low-latency communication (URLLC) system, where an access point (AP) sends short packets to multiple devices with the help…

信息论 · 计算机科学 2023-04-18 Yangyi Zhang , Xinrong Guan , Qingqing Wu , Zhi Ji , Yueming Cai

We propose and model an optical communication scheme for short distance datacom links based on the distribution of information across a wide comb spectrum. This modulation format, orthogonal delay division multiplexing, allows the…

光学 · 物理学 2023-10-27 Andrea Zazzi , Jeremy Witzens

In unmanned aerial vehicle (UAV) assisted millimeter wave (mmWave) communication, appropriate user-UAV association is crucial for improving system performance. In mmWave communication, user throughput largely depends on the line of sight…

网络与互联网体系结构 · 计算机科学 2025-05-26 Siddhanta Parial , Sasthi C. Ghosh , Anil K. Ghosh

A critical concern within the realm of visible light communications (VLC) pertains to enhancing system data rate, particularly in scenarios where the direct line-of-sight (LoS) connection is obstructed by obstacles. The deployment of…

信息论 · 计算机科学 2024-01-08 Omar Maraqa , Sylvester Aboagye , Telex M. N. Ngatched

Future wireless networks are envisioned to support both sensing and artificial intelligence (AI) services. However, conventional integrated sensing and communication (ISAC) networks may not be suitable due to the ignorance of diverse…

网络与互联网体系结构 · 计算机科学 2024-09-04 Wenhao Zhuang , Xinyu He , Yuyi Mao , Juan Liu

In this paper, we investigate the unmanned aerial vehicle (UAV)-aided simultaneous uplink and downlink transmission networks, where one UAV acting as a disseminator is connected to multiple access points, and the other UAV acting as a base…

信息论 · 计算机科学 2020-06-16 Meng Hua , Luxi Yang , Qingqing Wu , A. Lee Swindlehurst

Machine-type communications (MTC) devices in 5G will use the Non-orthogonal multiple access (NOMA) technology for massive connections. These devices switch between the transmission mode and the sleep mode for battery saving; and their…

信息论 · 计算机科学 2018-07-24 Bowen Cai , Yu Chen , Qimei Cui , Xiaoxuan Zhu , Yang Yang

This paper introduces an identification method that determines whether a millimeter-wave wireless transmission using directional antennas is being established over a line-of-sight (LOS) or a non-line-of-sight (NLOS) cluster for indoor…

信号处理 · 电气工程与系统科学 2024-02-27 Pengfei Lyu , Aziz Benlarbi-Delaï , Zhuoxiang Ren , Julien Sarrazin

One primary focus of next generation wireless communication networks is the millimeterwave (mmWave) spectrum, typically considered in the 30 GHz to 300 GHz frequency range. Despite their promise of high data rates, mmWaves suffer from…

网络与互联网体系结构 · 计算机科学 2025-07-01 Shawon Mitra , Subhojit Sarkar , Sasthi C. Ghosh

Underwater optical wireless communication (UOWC) is becoming an attractive technology for underwater wireless sensor networks (UWSNs) since it offers high-speed communication links. Although UOWC overcomes the drawbacks of acoustic and…

网络与互联网体系结构 · 计算机科学 2018-11-14 Rawan Alghamdi , Nasir Saeed , Hayssam Dahrouj , Tareq Y. Al-Naffouri , Mohamed-Slim Alouini

Future wireless networks will utilize extremely large-scale antenna arrays (ELAAs) over high-frequency bands, which, however, produce near-field spherical wavefronts and spatial wideband effects. To exploit and mitigate these, this paper…

信息论 · 计算机科学 2025-12-09 Jiasi Zhou , Chintha Tellambura

Major goal of ultra reliable and low latency communication (URLLC) is to reduce the latency down to a millisecond (ms) level while ensuring reliability of the transmission. Since the current uplink transmission scheme requires a complicated…

信号处理 · 电气工程与系统科学 2019-10-09 Wonjun Kim , Hyoungju Ji , Byonghyo Shim

UAVs are capable of improving the performance of next generation wireless systems. Specifically, UAVs can be exploited as aerial base-stations (UAV-BS) for supporting legitimate ground users in remote uncovered areas or in environments…

The millimeter-wave (mmWave)-based Wi-Fi sensing technology has recently attracted extensive attention since it provides a possibility to realize higher sensing accuracy. However, current works mainly concentrate on sensing scenarios where…

信息论 · 计算机科学 2022-10-11 Shiwen He , Kangli Cai , Shiyue Huang , Zhenyu Anz , Wei Huang , Ning Gao

This paper studies the performance of physical layer security (PLS) in a multi-user hybrid heterogeneous visible light communication (VLC) and radio frequency (RF) wireless communication system with simultaneous lightwave information and…

系统与控制 · 电气工程与系统科学 2025-05-20 Tuan A. Hoang , Thanh V. Pham , Chuyen T. Nguyen

This paper proposes an interleaved transceiver design method for a multiple-input multiple-output (MIMO) integrated sensing and communication (ISAC) system utilizing orthogonal frequency division multiplexing (OFDM) waveforms. We consider a…

信号处理 · 电气工程与系统科学 2025-08-15 Yating Chen , Cai Wen , Yan Huang , Jinye Peng , Wei Hong , Timothy N. Davidson

This paper aims at investigating the achievable performance and the issues that arise in ultra-dense networks (UDNs), when the signal propagation includes both the Line-of-Sight (LOS) and Non-Line-Of-Sight (NLOS) components. Backed by an…

信息论 · 计算机科学 2015-07-08 Carlo Galiotto , Nuno K. Pratas , Linda Doyle , Nicola Marchetti

Predictive millimeter-wave (mmWave) beamforming is a promising technique to enable low-latency and high-rate ground-air communications for cellular-connected unmanned aerial vehicles (UAVs). However, the high vulnerability of mmWave to…

信号处理 · 电气工程与系统科学 2024-04-19 Shiqi Zeng , Xiaoli Xu , Yong Zeng

Visible light communication (VLC), which uses LEDs for both illumination and communication purposes, has recently emerged as either an alternative or a support system for radio frequency (RF) communication. VLC channel inside a room is…

信息论 · 计算机科学 2019-02-14 Cenk Albayrak , Kadir Turk , Emin Tugcu , Cemaleddin Simsek , Ayhan Yazgan