Results 151 to 160 of about 7,711 (194)
An Efficient mmWave MIMO Transmission with Hybrid Precoding
KSII Transactions on Internet and Information Systemsopenaire +1 more source
Some of the next articles are maybe not open access.
Related searches:
Related searches:
Beam Selection-Based Hybrid Precoding
2021 IEEE 93rd Vehicular Technology Conference (VTC2021-Spring), 2021The deployment of large antenna arrays at the base station is a prerequisite for operating at the millimeter wave bands. The large antenna arrays are required to achieve high beamforming gains and thus to guarantee sufficient received signal power.
Mariam Mussbah +2 more
openaire +1 more source
A Low Complexity MMSE Hybrid Precoding Algorithm
2020 International Conference on Intelligent Transportation, Big Data & Smart City (ICITBS), 2020In order to solve the problem of difficult design of hybrid precoding scheme for millimeter-wave massive multi-input and multi-output (Massive MIMO) systems, which is not only difficult in hardware implementation, but also with high algorithm complexity, a SIC hybrid precoding scheme based on partially connected structure is proposed.
Zhaohua Zeng, Liqi Jia, Mi Shao
openaire +1 more source
Wideband hybrid precoder for massive MIMO systems
2015 IEEE Global Conference on Signal and Information Processing (GlobalSIP), 2015This paper studies wideband hybrid precoder for downlink space-division multiple-access and orthogonal frequency-division multiple-access (SDMA-OFDMA) massive multi-input multi-output (MIMO) systems. We first derive an iterative algorithm to alternatingly optimize the phase-shifter based wideband analog precoder and low-dimensional digital precoders ...
Lingxiao Kong +2 more
openaire +1 more source
Hybrid Precoding/Combining for Massive MIMO with Hybrid ARQ
2018Because of poor channel conditions, correct reception at a certain target data rate can sometimes become impossible. Therefore, packet retransmission protocols are used in modern wireless communications systems to improve the reliability of data transmission.
Tho Le-Ngoc, Ruikai Mai
openaire +1 more source
Hybrid Precoding for HAP Massive MIMO Systems
2020A hybrid precoding scheme is proposed for high altitude platform (HAP) massive multiple-input multiple-output (MIMO) systems to obtain the radio frequency (RF) precoder and the baseband precoder with limited RF chains. We first exploit duality theory to derive the relation between the statistical channel state information (SCSI) and RF precoder, which ...
Pingping Ji +3 more
openaire +1 more source
Linear Space-Time Precoder with Hybrid ARQ Transmission
IEEE GLOBECOM 2007-2007 IEEE Global Telecommunications Conference, 2007Hybrid automatic-repeat-request(HARQ) scheme can be incorporated with the linear precoder in multi-input multi- output(MIMO) transmission to ensure highly reliable communications. To fully utilize type-I HARQ diversity gain especially in the slow fading channels, we propose the optimal design principle of linear precoders, whose column vectors are ...
Kan Zheng +3 more
openaire +1 more source
Hybrid Precoding Processor for Millimeter Wave MIMO Communications
IEEE Transactions on Circuits and Systems II: Express Briefs, 2019Millimeter wave (mmWave) multiple-input multiple-output system is one of the most important techniques to increase throughput for 5G communications. To overcome the severe pathloss in the mmWave channel, the hybrid analog/digital precoding technique jointly designs radio frequency (RF) beamforming vectors and a baseband precoding matrix to approach the
Cheng-Kang Ho +2 more
openaire +1 more source
Directional Hybrid Precoding in Millimeter-Wave MIMO Systems
2016 IEEE Global Communications Conference (GLOBECOM), 2016The focus of this work is on cost and complexity- induced rank-constrained precoding for millimeter- wave (mmW) multi-input multi-output (MIMO) systems. The higher antenna dimensionality and sparse channel structure of mmW systems motivate directional precoding schemes over more complex and less robust eigen-mode-based precoding schemes.
Vasanthan Raghavan +5 more
openaire +1 more source
Learn to Rapidly Optimize Hybrid Precoding
2022 IEEE 23rd International Workshop on Signal Processing Advances in Wireless Communication (SPAWC), 2022Ortal Agiv, Nir Shlezinger
openaire +1 more source