Results 171 to 180 of about 11,447 (223)
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A Survey of FDD-Based Channel Estimation Schemes With Coordinated Multipoint
IEEE Systems Journal, 2022New enabling technologies that include millimeter wave (mmWave) communication, massive multiple-input-multiple-output (MIMO), and ultradense networks are set to transform the wireless communication systems.
Beenish Hassan +4 more
semanticscholar +1 more source
Flexible duplex in FDD spectrum
2017 IEEE International Conference on Communications Workshops (ICC Workshops), 2017In this paper, flexible frequency division duplex (FDD) and time division duplex (TDD) schemes are considered in FDD spectrum. With FDD spectrum, there is a paired uplink (UL) carrier with each downlink (DL) carrier, each carrier with the same bandwidth.
Krishna Balachandran +3 more
openaire +1 more source
FDDS: An Integrated Conceptual FDDS Framework for DDS Based Middleware
2019 International Conference on Communication and Electronics Systems (ICCES), 2019Data Distribution Services (DDS) has changed the way of the development process for complex distributed systems by tightly coupling QoS policies for achieving desired functionality at execution time. DDS middleware can be configured to handle edge-to-edge quality of service (QoS) policies.
Mukesh Kumar, Awadhesh Kumar Singh
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Downlink Channel Tracking for Intelligent Reflecting Surface-Aided FDD MIMO Systems
IEEE Transactions on Vehicular Technology, 2021Intelligent reflecting surfaces (IRSs) can improve the wireless link between the transmitter and receiver by configuring the propagation environments of the system.
Penghao Cai +5 more
semanticscholar +1 more source
IEEE transactions on microwave theory and techniques, 2021
This article proposes a dual-band complementary metal–oxide–semiconductor (CMOS) radio frequency (RF) front end employing a hybrid transformer-based electrical-balance duplexer (EBD) and $N$ -path filter embedded low-noise amplifier (LNA) for both in ...
Pillseong Kang, Junghwan Han
semanticscholar +1 more source
This article proposes a dual-band complementary metal–oxide–semiconductor (CMOS) radio frequency (RF) front end employing a hybrid transformer-based electrical-balance duplexer (EBD) and $N$ -path filter embedded low-noise amplifier (LNA) for both in ...
Pillseong Kang, Junghwan Han
semanticscholar +1 more source
Deep Learning and Compressive Sensing-Based CSI Feedback in FDD Massive MIMO Systems
IEEE Transactions on Vehicular Technology, 2020To fully utilize multiplexing and array gains of massive multiple-input multiple-output (MIMO), the downlink channel state information (CSI) must be acquired at the base station (BS).
Peizhe Liang +4 more
semanticscholar +1 more source
Bi-Directional Training for FDD Systems
2019 IEEE Global Communications Conference (GLOBECOM), 2019We study distributed algorithms for joint adaptation of precoding and combining filters in frequency-division duplex (FDD) multiple-input multiple-output (MIMO) cellular systems. Neither the base stations nor the mobiles have a priori channel state information, and the transmit/receive filters are directly adapted through training.
Hao Zhou 0036 +3 more
openaire +1 more source
IEEE Transactions on Wireless Communications
Channel state information (CSI) compression and feedback is a common way of acquiring the CSI at the transmitter in frequency division duplex (FDD) massive multiple-input multiple-output (mMIMO) systems due to the lack of channel reciprocity.
Wei Xu +4 more
semanticscholar +1 more source
Channel state information (CSI) compression and feedback is a common way of acquiring the CSI at the transmitter in frequency division duplex (FDD) massive multiple-input multiple-output (mMIMO) systems due to the lack of channel reciprocity.
Wei Xu +4 more
semanticscholar +1 more source
Journal of VLSI signal processing systems for signal, image and video technology, 2004
This paper addresses the initial acquisition for the UMTS-FDD W-CDMA standard. It presents an innovative cell searcher design optimized for acquisition speed and low power consumption [1]. The proposed architecture relies on a memory-based digital matched filter with permuted processing order.
Nicolas Darbel +3 more
openaire +1 more source
This paper addresses the initial acquisition for the UMTS-FDD W-CDMA standard. It presents an innovative cell searcher design optimized for acquisition speed and low power consumption [1]. The proposed architecture relies on a memory-based digital matched filter with permuted processing order.
Nicolas Darbel +3 more
openaire +1 more source
Coexistence of FDD flexible duplexing networks
2017 European Conference on Networks and Communications (EuCNC), 2017We study the coexistence of FDD flexible duplexing systems, where a cellular network may use FDD uplink band for downlink transmission. As a result, adjacent channel emissions will change, with an effect to networks operating on adjacent channels. To stabilize the adjacent channel interference, equalizing downlink power control is considered, such that
Lembo, S. +4 more
openaire +2 more sources