Results 191 to 200 of about 184,691 (254)
Some of the next articles are maybe not open access.
Secrecy Throughput in Full-Duplex Multiuser MIMO Short-Packet Communications
IEEE Wireless Communications Letters, 2021In this letter, we consider the physical-layer security (PLS) in full-duplex (FD) multiuser multiple-input-multiple-output (MIMO) short-packet communications, where a base station (BS) transmits precoded signals for secure downlink multicast while ...
Lai Wei, Yuli Yang, B. Jiao
semanticscholar +1 more source
Multiuser MIMO Concept for Physical Layer Security in Multibeam Satellite Systems
IEEE Transactions on Information Forensics and Security, 2021In satellite communication downlinks, physical layer security is challenging to achieve due to their broadcasting nature and Line-of-Sight channel characteristics.
Matthias G. Schraml +2 more
semanticscholar +1 more source
Linear Precoding and Stream Combining for Rate Splitting in Multiuser MIMO Systems
IEEE Communications Letters, 2020This letter develops practical linear precoding and stream combining techniques for rate-splitting (RS) in multiuser multiple-input multiple-output (MIMO) systems.
A. Flores, R. D. de Lamare, B. Clerckx
semanticscholar +1 more source
On Multiuser MIMO Multistream Transmission
IEEE Transactions on Vehicular Technology, 2009We present a system for multiuser multiple-input-multiple-output (MIMO) multistream downlink transmission, which employs covariance-based linear precoders at the transmitter and a minimum-mean-square-error (MMSE) equalizer at each receiver. Antennas of user equipment are arranged to receive different streams bound to this user.
null Haixia Zhang +3 more
openaire +1 more source
2001
Abstract : Communication systems with multiple antennas at both transmitter and receiver (i.e. MIMO systems) have shown considerable promise in providing high-rate high-quality wireless links. This talk will discuss implications of using MIMO systems in multiple-access networks.
H. Vincent Poor +2 more
openaire +1 more source
Abstract : Communication systems with multiple antennas at both transmitter and receiver (i.e. MIMO systems) have shown considerable promise in providing high-rate high-quality wireless links. This talk will discuss implications of using MIMO systems in multiple-access networks.
H. Vincent Poor +2 more
openaire +1 more source
Energy-efficient multiuser MIMO beamforming
2011 45th Annual Conference on Information Sciences and Systems, 2011In previous works, MIMO beamforming in multiuser wireless systems is typically formulated in two ways: one is minimizing the total transmit power with individual signal-to-interference-plus-noise ratio (SINR) constraints for each user; and the other one is maximizing the minimum SINR among all the users with a total transmission power constraint ...
null Chenzi Jiang, Leonard J. Cimini
openaire +1 more source
Fluid Antenna System Liberating Multiuser MIMO for ISAC via Deep Reinforcement Learning
IEEE Transactions on Wireless CommunicationsThe aim of this paper is to enhance the performance of an integrated sensing and communications (ISAC) system in the multiuser multiple-input multiple-output (MIMO) downlink in which a two-dimensional (2D) fluid antenna system (FAS) with multiple ...
Chao Wang +6 more
semanticscholar +1 more source
Large-scale multiuser SM-MIMO versus massive MIMO
2014 Information Theory and Applications Workshop (ITA), 2014Spatial modulation (SM) is attractive for multi-antenna wireless communications. SM uses multiple transmit antenna elements but only one transmit radio frequency (RF) chain. In SM, in addition to the information bits conveyed through conventional modulation symbols (e.g., QAM), the index of the active transmit antenna also conveys information bits.
T. Lakshmi Narasimhan +2 more
openaire +1 more source
Two-Timescale Design for Movable Antenna-Enabled Multiuser MIMO Systems
IEEE Transactions on CommunicationsMovable antennas (MAs), which can be swiftly repositioned within a defined region, offer a promising solution to the limitations of fixed-position antennas (FPAs) in adapting to spatial variations in wireless channels, thereby improving channel ...
Ziyuan Zheng +3 more
semanticscholar +1 more source
2012
Future Wireless Networks are expected to adopt multi-user multiple input multiple output (MU-MIMO) systems whose performance is maximized by making use of precoding at the transmitter. This chapter describes the recent advances in precoding design for MU-MIMO and introduces a new technique to improve the precoder performance.
Elsadig Saeid +2 more
openaire +1 more source
Future Wireless Networks are expected to adopt multi-user multiple input multiple output (MU-MIMO) systems whose performance is maximized by making use of precoding at the transmitter. This chapter describes the recent advances in precoding design for MU-MIMO and introduces a new technique to improve the precoder performance.
Elsadig Saeid +2 more
openaire +1 more source