Results 21 to 30 of about 78,274 (209)
Tikrit Journal of Engineering Sciences, 2021 The future wireless communication requires a reliable transmission at high data rates, so the transmission over frequency-selective fading Multiple-Input–Multiple-Output MIMO channels become interesting since the capacity of "MIMO" channels expressions ...
Maha Monther Shahab +2 more
doaj +1 more source
MIMO Radar Ambiguity Properties and Optimization Using Frequency-Hopping Waveforms [PDF]
, 2008 The concept of multiple-input multiple-output (MIMO) radars has drawn considerable attention recently. Unlike the traditional single-input multiple-output (SIMO) radar which emits coherent waveforms to form a focused beam, the MIMO radar can transmit ...
Chen, Chun-Yang, Vaidyanathan, P. P.
core +2 more sources
Eight Element Multiple-Input Multiple-Output (MIMO) Antenna for 5G Mobile Applications
IEEE Access, 2019 This work presents a systematic design of high performance eight element antenna array for a 5G mobile terminal operating at 2.6/3.5 GHz bands. The proposed eight element slot antenna array based on unit monopole slot antenna embedded in the metal casing
Mujeeb Abdullah +2 more
doaj +1 more source
Duality of antennas and subcarriers in massive MIMO-OFDM downlink system [PDF]
, 2015 Massive multiple-input-multiple-output (MIMO) can significantly outperform conventional MIMO in terms of spectrum efficiency and link reliability. For massive MIMO, there are still theoretical and practical issues that have to be addressed.
Bannour, Ahmed, Sun, Yichuang
core +2 more sources
Early Neighbor Rejection-Aided Tabu Search Detection for Large MIMO Systems
Applied Sciences, 2021 In this study, a low complexity tabu search (TS) algorithm for multiple-input multiple-output (MIMO) systems is proposed. To reduce the computational complexity of the TS algorithm, early neighbor rejection (ENR) and layer ordering schemes are employed ...
Uzokboy Ummatov +3 more
doaj +1 more source
Micromachines, 2021 In this paper, a compact planar dual-band multiple-input and multiple-output (MIMO) antenna with high isolation is presented to satisfy the increasing requirements of wireless communication.
Rong Yang +5 more
doaj +1 more source
Transmit Diversity in the Downlink for the TETRA-TEDS System
Journal of Telecommunications and Information Technology, 2014 In the paper a proposal for the improvement of performance for the TETRA Enhanced Data System (TEDS) employing transmit diversity based on two antennas in the downlink is described.
Dominik A. Rutkowski +1 more
doaj +1 more source
On Some Unifications Arising from the MIMO Rician Shadowed Model [PDF]
, 2015 This paper shows that the proposed Rician shadowed model for multi-antenna communications allows for the unification of a wide set of models, both for multiple-input multiple-output (MIMO) and single- input single-output (SISO) communications.
Martos-Naya, Eduardo +1 more
core +2 more sources
Study of Clustering Solutions for Scalable Cell-Free Massive MIMO
IEEE Access, 2023 In response to the requirements of 5G and beyond, cell-free systems have emerged to ensure uniform service throughout the area. However, the idea of having no cells leads to a considerably large monolithic system, which is not scalable.
Danaisy Prado-Alvarez +4 more
doaj +1 more source
A software and hardware evaluation of revolutionary turbo MIMO OFDM schemes for 5 GHz WLANs [PDF]
, 2003 Globally, WLANs operating in the 5 GHz band have been standardized by the IEEE (North America), ETSI (Europe) and ARID (Japan). A harmonized physical layer is specified offering up to 54 Mbits/s using rate adaptive coded orthogonal frequency division ...
Abdul Aziz, MK +6 more
core +2 more sources