Multiple-Input Multiple-Output Systems in Wireless Communications

Get Certified ◽  
2009 ◽  
pp. 447-464
Keyword(s):  
Wireless Communications ◽  
Multiple Input Multiple Output ◽  
Multiple Input ◽  
Input Multiple Output

scholarly journals High Isolation Millimeter-Wave Wideband MIMO Antenna for 5G Communication

2019 ◽  
Vol 2019 ◽  
pp. 1-12 ◽  
Author(s):  
Fei Wang ◽  
Zhaoyun Duan ◽  
Xin Wang ◽  
Qing Zhou ◽  
Yubin Gong
Keyword(s):  
Wireless Communications ◽  
Transmission Coefficient ◽  
Millimeter Wave ◽  
Multiple Input Multiple Output ◽  
Mimo Antenna ◽  
High Isolation ◽  
Multiple Input ◽  
Input Multiple Output ◽  
The Stability ◽  
24 Ghz

A millimeter-wave wideband antenna is presented for the 5th generation applications. The operation band ranges from 24 GHz to 39 GHz which covers most of the Ka band. Furthermore, a 9×9 multiple-input-multiple-output (MIMO) antenna is developed. The high isolation is achieved without introducing external decoupling structures. The transmission coefficient is under −20 dB within only 0.4 mm space between antenna elements. The radiation pattern also shows the stability within the wide operation band. Both simulated and measured results show that this proposed MIMO antenna is suitable for the future wireless communications.

scholarly journals Dual Zeroth-Order Resonant USB Dongle Antennas for 4G MIMO Wireless Communications

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Yan Shi ◽  
Lu Zhang ◽  
Chang-Hong Liang
Keyword(s):  
Wireless Communications ◽  
Multiple Input Multiple Output ◽  
Antenna System ◽  
Total Efficiency ◽  
Zeroth Order ◽  
Mimo Antenna ◽  
Order Resonance ◽  
Measurement Results ◽  
Multiple Input ◽  
Input Multiple Output

A multiband multiple-input multiple-output (MIMO) antenna system consisting of two antenna elements has been proposed for 4G USB dongle application. The designed MIMO antenna system with a compact volume of 25 mm × 30 mm × 3.5 mm operates in two zeroth-order resonance (ZOR) modes to cover the LTE band 13 (746–787 MHz), GSM850/900 (824–960 MHz), and LTE band 7 (2500–2690 MHz) simultaneously. A pair of L-shaped parasitic strips and an etching slot on the ground are employed to achieve good isolation between two elements. Measurement results show that proposed MIMO antenna system has total efficiency over 40% across the operation band and isolation less than −8 dB at the lower band and −16 dB at the upper band, respectively.

scholarly journals Fundamentals and Challenges of Massive MIMO for 5G

2019 ◽  
Vol 8 (11S2) ◽  
pp. 61-65 ◽  
Keyword(s):  
Wireless Communications ◽  
Multiple Input Multiple Output ◽  
Research Direction ◽  
Base Station ◽  
Future Research ◽  
Time Frequency ◽  
Multiple Input ◽  
Input Multiple Output ◽  
Communication Frameworks ◽  
Enormous Number

In this paper we introduced a rundown and future research direction of monstrous multiple input multiple output (MIMO) for fifth era (5G). Gigantic MIMO innovation, where a base station (BS) furnished with exceptionally enormous number of reception apparatuses for serving numerous clients in the same time-frequency resource, can fulfill the need of high throughput, ghastly proficiency, vitality utilization of wireless communications, and subsequently it is a promising innovation for up and coming age of wireless communications, for example, 5G cell frameworks. Moreover, we additionally introduced, where huge MIMO could prompt critical improvement of 5G wireless Communication frameworks.

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