Results 181 to 190 of about 11,447 (223)
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Exploiting FDD Channel Reciprocity for Physical Layer Secret Key Generation in IoT Networks
IEEE Communications LettersThe utilization of physical layer Secret Key Generation (SKG) is increasingly prevalent in securing wireless communication within Internet of Things systems, particularly in Narrow-band IoT.
Ehsan Olyaei Torshizi, Werner Henkel
semanticscholar +1 more source
Directional Training for FDD Massive MIMO
IEEE Transactions on Wireless Communications, 2018A key challenge for frequency-division duplexing (FDD) massive multi-input multi-output (MIMO) is the large overhead in acquiring channel state information (CSI) for transmits beamforming. In this paper, we propose a scalable method called directional training to obtain downlink CSI.
Xing Zhang 0011 +2 more
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2002
This chapter provides a detailed description of the UTRA FDD mode. In the first section the key parameters are listed as a reference. A short section on the system architecture, the layer structure of the radio interface and its interworking with higher layers, and the bearer services provided in UMTS follows.
Andreas Springer, Robert Weigel
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This chapter provides a detailed description of the UTRA FDD mode. In the first section the key parameters are listed as a reference. A short section on the system architecture, the layer structure of the radio interface and its interworking with higher layers, and the bearer services provided in UMTS follows.
Andreas Springer, Robert Weigel
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UTRA/FDD RF Transceiver Requirements
Wireless Personal Communications, 2002Unified RF requirements are derived for an UMTS Terrestrial Radio Access/Frequency Division Duplex (UTRA/FDD) compliant mobile transceiver. A set of transceiver requirements are proposed with consideration to system issues including duplex aspects. From these design-compatible requirements are proposed for each functional block in the transceiver.
Per Madsen +8 more
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VAVAC systems modeling and simulation for FDD applications
2011 9th IEEE International Conference on Control and Automation (ICCA), 2011Faulty operation of HVAC systems can lead to discomfort for the occupants, energy wastage, unreliability and shorter equipment life. Cost-effective Fault Detection and Diagnosis (FDD) methods can therefore ensure an increase in the system uptime, reliability, and overall efficiency.
BEGHI, ALESSANDRO +3 more
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IEEE Wireless Communications Letters, 2019
In this letter, we study the channel state information (CSI) feedback based on the deep autoencoder (AE) considering the feedback errors and feedback delay in the frequency division duplex massive multiple-input multiple-output system.
Y. Jang +4 more
semanticscholar +1 more source
In this letter, we study the channel state information (CSI) feedback based on the deep autoencoder (AE) considering the feedback errors and feedback delay in the frequency division duplex massive multiple-input multiple-output system.
Y. Jang +4 more
semanticscholar +1 more source
Information-Theoretic Pilot Design for Downlink Channel Estimation in FDD Massive MIMO Systems
IEEE Transactions on Signal Processing, 2019Massive multiple-input multiple-output (MIMO) is one of the most promising techniques for next generation wireless communications due to its superior capability to provide high spectrum and energy efficiency. Considering the very large number of antennas
Yujie Gu, Yimin D. Zhang
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Tracking FDD Massive MIMO Downlink Channels by Exploiting Delay and Angular Reciprocity
IEEE Journal on Selected Topics in Signal Processing, 2019The massive multiple-input multiple-output (MIMO) technology considerably enhances the spectral efficiency of a wireless communication system. However, it suffers from substantial performance degradation caused by the movement of users and the difficulty
Yu Han +4 more
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Performance of a WCDMA FDD Cellular Multihop Network
2005 IEEE 16th International Symposium on Personal, Indoor and Mobile Radio Communications, 2006Cellular multihop networks have the potential to decrease power consumption, increase coverage and/or enable higher data rates. We propose using in-band transmissions for the connection between a fixed repeating device and the cellular base station. A user connected via the repeater use one frequency band (fq2) for the communication to the repeater and
Robert S. Karlsson +3 more
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Investigation on Multi-Antenna Technologies Evolution from FDD LTE to NR FDD
2021 IEEE 20th International Conference on Trust, Security and Privacy in Computing and Communications (TrustCom), 2021Jinge Guo +5 more
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