239 Hits in 6.6 sec

Sub-Chain Beam for mmWave Devices: A Trade-off between Power Saving and Beam Correspondence [article]

Jianhua Mo, Daehee Park, Boon Loong Ng, Vutha Va, Anum Ali, Chonghwa Seo, Jianzhong Charlie Zhang
2021 arXiv   pre-print
This paper proposes methods for sub-chain beam codebook design to achieve a trade-off between the power saving and beam correspondence.  ...  Meanwhile, if the UL beam with sub-array, named as sub-chain beam in this paper, has a similar radiation pattern as the DL beam, the beam correspondence can still hold.  ...  This paper proposes methods for sub-chain beam codebook design to achieve a trade-off between the power saving and beam correspondence.  ... 
arXiv:2112.12296v1 fatcat:bkwuhxg4sfhxpjtcbxm3mwvtti

Power-efficient beam tracking during connected mode DRX in mmWave and sub-THz systems

Syed Hashim Ali Shah, Sundar Aditya, Sundeep Rangan
2021 IEEE Journal on Selected Areas in Communications  
His research interests include wireless system design (mmWave and sub-THz) and machine learning for wireless communications.  ...  DRX is likely to be aggressively used at mmWave and sub-THz frequencies due to the high front-end power consumption.  ...  This link tracking reduces the time a UE can turn off its RFFE, thereby creating trade-offs between power consumption, directional tracking and link reliability.  ... 
doi:10.1109/jsac.2021.3071791 fatcat:yhxvp2xaendhvdyxy7abdqnpn4

A Survey on Hybrid Beamforming Techniques in 5G: Architecture and System Model Perspectives

Irfan Ahmed, Hedi Khammari, Adnan Shahid, Ahmed Musa, Kwang Soon Kim, Eli De Poorter, Ingrid Moerman
2018 IEEE Communications Surveys and Tutorials  
shifters and power amplifiers with lower-dimensional digital signal processing units.  ...  This hybrid beamforming design reduces the cost and power consumption which is aligned with an energyefficient design vision of 5G.  ...  There exists a complexity-gain trade-off between the two architectures.  ... 
doi:10.1109/comst.2018.2843719 fatcat:v7kmfmaxrfeeti7hcwsjjf5fda

Initial Access & Beam Alignment for mmWave and Terahertz Communications

Wissal Attaoui, Khadija Bouraqia, Essaid Sabir
2022 IEEE Access  
In this paper, we present a comprehensive survey of beam alignment and initial access in mmWave and terahertz 5G/6G systems.  ...  However, due to this directionality, many issues can impact the beam alignment between transmitter and receiver.  ...  ACKNOWLEDGMENT The authors would like to thank the editor and the four anonymous reviewers for their valuable comments and suggestions that substantially improved the content and the presentation of this  ... 
doi:10.1109/access.2022.3161951 fatcat:wgwrvxyz7relpb3afo4rq3nbli

Can 5G NR-Light Operate at Millimeter Waves? Design Guidelines for Mid-Market IoT Use Cases [article]

Matteo Pagin, Tommaso Zugno, Marco Giordani, Louis-Adrien Dufrene, Quentin Lampin, Michele Zorzi
2021 arXiv   pre-print
In this paper we investigate the feasibility of operating such devices at mmWaves, in view of the requirements and expectations for NR- Light applications in terms of cost and complexity, throughput, and  ...  To meet these (often conflicting) constraints, in 2019 the 3GPP released a set of specifications for 5G NR, one of the main innovations being the support for communications in the millimeter wave (mmWave  ...  We claim that the proposed NR-L-Mid configuration strikes the right trade-off between power consumption and portion of time that is spent for data transmission. VI.  ... 
arXiv:2109.15017v1 fatcat:23u7in52fndvhlfthnphrblvam

Performance, Power, and Area Design Trade-Offs in Millimeter-Wave Transmitter Beamforming Architectures

Han Yan, Sridhar Ramesh, Timothy Gallagher, Curtis Ling, Danijela Cabric
2019 IEEE Circuits and Systems Magazine  
The comparison of performance, power, and area for these three architectures is performed for three representative 5G use cases, which cover a range of pre-beamforming SNR and multiplexing regimes.  ...  The results show that the digital array is the most power and area efficient compared against optimal design for each architecture.  ...  In Section III, we discuss design trade-offs in all array architectures and the designs used for comparison.  ... 
doi:10.1109/mcas.2019.2909447 fatcat:sadqj3yklbd75cqgooxp53mnry

Hybrid Precoding-Based Millimeter-Wave Massive MIMO-NOMA with Simultaneous Wireless Information and Power Transfer [article]

Linglong Dai, Bichai Wang, Mugen Peng, Shanzhi Chen
2018 arXiv   pre-print
Finally, the achievable sum rate is maximized by jointly optimizing power allocation for mmWave massive MIMO-NOMA and power splitting factors for SWIPT, and an iterative optimization algorithm is developed  ...  In addition, simultaneous wireless information and power transfer (SWIPT) is a promising solution to maximize the energy efficiency.  ...  However, the trade-off between information rate and harvested energy level should be carefully considered to facilitate efficient SWIPT in multi-user systems, since inter-user interferences are usually  ... 
arXiv:1809.07682v1 fatcat:gff3wk4rc5ddpawjbfwmdzw7ia

A Comprehensive Survey on Mobility Management in 5G Heterogeneous Networks: Architectures, Challenges and Solutions

Emre Gures, Ibraheem Shayea, Abdulraqeb Alhammadi, Mustafa Ergen, Hafizal Mohamad
2020 IEEE Access  
network, the paging procedure that provides the location of the UE within the network, connected mode mobility management schemes and beam level mobility and beam management.  ...  Besides, this paper addresses the challenges and suggest possible solutions for the 5G mobility management.  ...  Two trade-offs encountered during the paging procedure are mentioned; these are the trade-off between power and delay caused by the size of the discontinuous reception (DRX) cycle and the number of cells  ... 
doi:10.1109/access.2020.3030762 fatcat:72pl4aunwjbsrpojd62fox74na

Millimeter-wave and Terahertz Spectrum for 6G Wireless [article]

Shuchi Tripathi, Nithin V. Sabu, Abhishek K. Gupta, Harpreet S. Dhillon
2021 arXiv   pre-print
The primary goal of this chapter is to equip readers with sufficient background about the mmWave and THz bands so that they are able to both appreciate the necessity of using these bands for commercial  ...  With the standardization of 5G, commercial millimeter wave (mmWave) communications has become a reality despite all the concerns about the unfavorable propagation characteristics of these frequencies.  ...  On the other hand, the hybrid analog/digital beamforming is again a better trade-off between the analog and digital methods.  ... 
arXiv:2102.10267v1 fatcat:ms5khppugncu5fvyplmvs6zizi

Radar Aided 6G Beam Prediction: Deep Learning Algorithms and Real-World Demonstration [article]

Umut Demirhan, Ahmed Alkhateeb
2021 arXiv   pre-print
In this paper, we develop deep learning based radar-aided beam prediction approaches for mmWave/sub-THz systems.  ...  This awareness could be utilized to reduce or even eliminate the beam training overhead in millimeter wave (mmWave) and sub-terahertz (THz) MIMO communication systems, which enables a wide range of highly-mobile  ...  This present a trade-off between the beam prediction accuracy and complexity of the solution.  ... 
arXiv:2111.09676v1 fatcat:wklzbrjirbeu3jeccuxiwqvgmy

A Comprehensive Survey on Millimeter Wave Communications for Fifth-Generation Wireless Networks: Feasibility and Challenges

Anthony Ngozichukwuka Uwaechia, Nor Muzlifah Mahyuddin
2020 IEEE Access  
Second, we compared existing wireless communication techniques like sub-6-GHz WiFi and sub-6 GHz 4G LTE over mmWave communications which come with benefits comprising narrow beam, high signal quality,  ...  To tackle these challenges, we first provide a survey of existing solutions and standards and discuss the radio-frequency (RF) spectrum and regulatory issues for mmWave communications.  ...  Theoretically, powersplitting receiver design is known to achieve the best trade-off between the information rate and the amount of RF energy transferred.  ... 
doi:10.1109/access.2020.2984204 fatcat:akymafkbcrevtejtgfywrkhcre

Mobility Support for Millimeter Wave Communications: Opportunities and Challenges [article]

Jing Li, Yong Niu, Hao Wu, Bo Ai, Sheng Chen, Zhiyong Feng, Zhangdui Zhong, Ning Wang
2022 arXiv   pre-print
Millimeter-wave (mmWave) communication technology offers a potential and promising solution to support 5G and B5G wireless networks in dynamic scenarios and applications.  ...  To address these problems, we conduct a survey of the opportunities and technologies to support mmWave communications in mobile scenarios.  ...  trade-off remains a challenging task. 3) Relay: As another anti-blockage alternative, relay-aided communications help to circumvent obstacles and extend coverage as well as to save transmit power and  ... 
arXiv:2205.09214v1 fatcat:l7ekb4a3pnabxmnlr7wirpm55q

Enabling Multi-Functional 5G and Beyond User Equipment: A Survey and Tutorial

Yiming Huo, Xiaodai Dong, Wei Xu, Marvin Yuen
2019 IEEE Access  
Finally, the new trends of UE design and terahertz technologies for 5G and beyond applications are investigated and envisioned. 116976 VOLUME 7, 2019 Y.  ...  After the classification of typical 5G application and deployment scenarios, we propose and analyze a novel hardware reuse and multiplexing solution to facilitate cost-effective and energy-efficient UE  ...  ACKNOWLEDGEMENT The authors would like to acknowledge Natural Sciences and Engineering Research Council of Canada, National Natural Science Foundation of China for the support of this project, and valuable  ... 
doi:10.1109/access.2019.2936291 fatcat:wxssot7455etxmxnokgsdkobbu

Energy and Latency of Beamforming Architectures for Initial Access in mmWave Wireless Networks [article]

C. Nicolas Barati and Sourjya Dutta and Sundeep Rangan and Ashutosh Sabharwal
2020 arXiv   pre-print
We recognize, however, that using fully digital beamforming post beam discovery, i.e., for data transmission, is not viable from a power consumption standpoint.  ...  Since beamforming through analog front-ends allows sampling in only one direction at a time, the mobile device is "on" for a longer time compared to a digital beamformer which can get spatial samples from  ...  Choosing M trades off spatial multiplexing capabilities on the one hand, and energy consumption on the other.  ... 
arXiv:2001.02034v1 fatcat:5dnfuwf4cfhabfnmgsvtcmooc4

On the Real Experimentation and Simulation Models for Millimeter-Wave

Alexandre Figueiredo, Tania Ferreira, Duarte Raposo, Miguel Luis, Pedro Rito, Susana Sargento
2022 IEEE Access  
This article presents a key component missing in the simulation of mmWave networks, a blockage model.  ...  The simulated and the real-life tests show similar results, with an average error for the worst case of 2.43% (index ranges) and 4.51% (distance), and to an average standard deviation of about 1.33 dBm  ...  one propose in [19] , that addresses a mmWave module with support for different channel models based on the LTE protocol stack (3GPP), providing a trade-off between computation complexity, flexibility  ... 
doi:10.1109/access.2022.3174085 fatcat:fosbefbravcj3fsduhofwe6eom
« Previous Showing results 1 — 15 out of 239 results