Internal multiple‐input, multiple‐output antenna arrays for wireless wide area network and wireless local area network operation in seamless full metal cover laptops

2014 ◽  
Vol 8 (2) ◽  
pp. 73-79 ◽  
Author(s):  
S. Cheng ◽  
P. Lindberg ◽  
A. Kaikkonen ◽  
P. Hallbjörner
Keyword(s):  
Antenna Arrays ◽  
Wireless Local Area Network ◽  
Local Area Network ◽  
Multiple Input Multiple Output ◽  
Local Area ◽  
Area Network ◽  
Wide Area Network ◽  
Multiple Input ◽  
Input Multiple Output ◽  
Network Operation

scholarly journals Performance analysis of IEEE 802.11ac based WLAN in wireless communication systems

2019 ◽  
Vol 9 (2) ◽  
pp. 1131 ◽  
Author(s):  
A. Z. Yonis
Keyword(s):  
Communication Systems ◽  
Wireless Local Area Network ◽  
Local Area Network ◽  
Multiple Input Multiple Output ◽  
Local Area ◽  
Area Network ◽  
Data Rates ◽  
Input Multiple Output ◽  
Ieee 802.11Ac ◽  
5 Ghz

<p><span lang="EN-US">IEEE 802.11ac based wireless local area network (WLAN) is emerging WiFi standard at 5 GHz, it is new gigabit-per-second standard providing premium services. IEEE 802.11ac accomplishes its crude speed increment by pushing on three distinct measurements firstly is more channel holding, expanded from a maximum of 80 MHz up to 160 MHz modes. Secondly, the denser modulation, now using 256-QAM, it has the ability to increase the data rates up to 7 Gbps using an 8×8 multiple input multiple output (MIMO). Finally, it provides high resolution for both narrow and medium bandwidth channels. This work presents a study to improve the performance of IEEE 802.11ac based WLAN system.</span></p>

A DUAL BAND MIMO DIELECTRIC RESONATOR ANTENNA FOR WLAN APPLICATION

2015 ◽  
Vol 77 (10) ◽  
Author(s):  
Nuramirah Mohd Nor ◽  
Mohd Haizal Jamaluddin
Keyword(s):  
Dielectric Resonator ◽  
Wireless Local Area Network ◽  
Local Area Network ◽  
Multiple Input Multiple Output ◽  
Dual Band ◽  
Impedance Bandwidth ◽  
Area Network ◽  
Dielectric Resonator Antenna ◽  
Multiple Input ◽  
Input Multiple Output

In this paper, a dual band multiple-input-multiple-output dielectric resonator antenna for wireless local area network application is presented. Two identical feeding techniques are used to feed the proposed antenna. The simulated impedance bandwidth for both port are the same which are 6.5% at 2.45 GHz and 3% at 5.2 GHz. The DRA also has an acceptable value of isolation over the operating frequency. The simulated S-parameter and other multiple-input-multiple-output parameters are studied and observed.

High isolation and compact MIMO antenna system with defected shorting wall

2014 ◽  
Vol 7 (2) ◽  
pp. 167-172 ◽  
Author(s):  
Xi-Wang Dai ◽  
Long Li ◽  
Zhen-Ye Wang ◽  
Chang-Hong Liang
Keyword(s):  
Wireless Local Area Network ◽  
Local Area Network ◽  
Mimo System ◽  
Multiple Input Multiple Output ◽  
Local Area ◽  
Antenna System ◽  
Area Network ◽  
Mimo Antenna ◽  
High Isolation ◽  
Input Multiple Output

In this paper, a compact multiple-input multiple-output (MIMO) antenna system with high isolation is proposed for 2.4 GHz wireless local area network (WLAN) application. The system is composed of two aperture-coupled shorted patch antennas with a spacing of 4 mm (only 0.032λ). The antenna is fed with an H-shaped coupling slot, and the defected shorting wall is used for high isolation. The proposed MIMO system exhibits an isolation of better than −20 dB and a maximum isolation of −43 dB at the central frequency. The envelope correlation coefficient is less than 0.01. The simulated and measured results show that the proposed antenna is a good candidate for MIMO system with higher isolation and better diversity.

scholarly journals Handoff Between a Wireless Local Area Network (WLAN) and a Wide Area Network (UMTS)

2009 ◽  
Vol 10 (2) ◽  
pp. 167-184
Author(s):  
Jaime Sánchez-García ◽  
◽  
Luis A. Villaseñor-González ◽  
Mario E. Vaquera-Flores ◽  
Raúl Aquino-Santos ◽  
...  
Keyword(s):  
Wireless Local Area Network ◽  
Local Area Network ◽  
Local Area ◽  
Wide Area ◽  
Area Network ◽  
Wide Area Network

scholarly journals Experimental Results of Network-Assisted Interference Suppression Scheme Using Adaptive Beam-Tilt Switching

2017 ◽  
Vol 2017 ◽  
pp. 1-10
Author(s):  
Tomoki Murakami ◽  
Riichi Kudo ◽  
Koichi Ishihara ◽  
Masato Mizoguchi ◽  
Naoki Honma
Keyword(s):  
Wireless Local Area Network ◽  
Local Area Network ◽  
Interference Suppression ◽  
Multiple Input Multiple Output ◽  
Local Area ◽  
Experimental Results ◽  
System Throughput ◽  
Area Network ◽  
Network Systems ◽  
Transmit Power

This paper introduces a network-assisted interference suppression scheme using beam-tilt switching per frame for wireless local area network systems and its effectiveness in an actual indoor environment. In the proposed scheme, two access points simultaneously transmit to their own desired station by adjusting angle of beam-tilt including transmit power assisted from network server for the improvement of system throughput. In the conventional researches, it is widely known that beam-tilt is effective for ICI suppression in the outdoor scenario. However, the indoor effectiveness of beam-tilt for ICI suppression has not yet been indicated from the experimental evaluation. Thus, this paper indicates the effectiveness of the proposed scheme by analyzing multiple-input multiple-output channel matrices from experimental measurements in an office environment. The experimental results clearly show that the proposed scheme offers higher system throughput than the conventional scheme using just transmit power control.

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