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Paper Abstract and Keywords
Presentation 2017-11-09 14:50
[Invited Lecture] Development and experimental evaluation of cooperative wireless LAN with distributed smart antenna system
Koichi Ishihara, Tomoki Murakami, Hirantha Abeysekera, Mamoru Akimoto, Yasushi Takatori, Takafumi Hayashi (NTT)
Abstract (in Japanese) (See Japanese page) 
(in English) Wireless local area network (LAN) systems have recently seen explosive growth as the prevailing smart devices anywhere. Therefore, the number of access points (APs) also increases and are densely deployed so as to afford enough connectively for wireless LAN devices. However, since the frequency resource available for wireless LAN systems is limited, APs have to share their frequency channel with some others that result in more overlapping basic service sets (OBSSs) in such a dense AP environment. As a result, the system throughput degrades due to the interference among OBSSs.
In this paper, we propose a distributed smart antenna system (D-SAS) for wireless LAN, which suppresses the interference among OBSSs and improves the system throughput in high-density wireless LAN scenarios. The proposed scheme is designed to reduce the interference from other D-SAS APs. The scheme selects the best antenna set with the maximum signal power received from the station (STA) and adjusts the transmit power at the AP. We also show the prototype of wireless LAN D-SAS AP and demonstrated the system throughput of the proposed scheme with stadium experiment. It was found that the developed D-SAS AP provides twice system throughput larger than the conventional AP with centralized antennas.
Keyword (in Japanese) (See Japanese page) 
(in English) Cooperative wireless LAN / Distributed smart antenna system / DAS / Interference / OBSS / wireless LAN / D-SAS /  
Reference Info. IEICE Tech. Rep., vol. 117, no. 284, RCS2017-234, pp. 171-174, Nov. 2017.
Paper # RCS2017-234 
Date of Issue 2017-11-01 (AP, RCS) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380

Conference Information
Committee AP RCS  
Conference Date 2017-11-08 - 2017-11-10 
Place (in Japanese) (See Japanese page) 
Place (in English) Fukuoka University 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Adaptive Antenna, Equalization, Interference Canceler, MIMO, Wireless Communications, etc. 
Paper Information
Registration To RCS 
Conference Code 2017-11-AP-RCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Development and experimental evaluation of cooperative wireless LAN with distributed smart antenna system 
Sub Title (in English)  
Keyword(1) Cooperative wireless LAN  
Keyword(2) Distributed smart antenna system  
Keyword(3) DAS  
Keyword(4) Interference  
Keyword(5) OBSS  
Keyword(6) wireless LAN  
Keyword(7) D-SAS  
Keyword(8)  
1st Author's Name Koichi Ishihara  
1st Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
2nd Author's Name Tomoki Murakami  
2nd Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
3rd Author's Name Hirantha Abeysekera  
3rd Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
4th Author's Name Mamoru Akimoto  
4th Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
5th Author's Name Yasushi Takatori  
5th Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
6th Author's Name Takafumi Hayashi  
6th Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
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Speaker
Date Time 2017-11-09 14:50:00 
Presentation Time 25 
Registration for RCS 
Paper # IEICE-AP2017-129,IEICE-RCS2017-234 
Volume (vol) IEICE-117 
Number (no) no.283(AP), no.284(RCS) 
Page pp.115-118(AP), pp.171-174(RCS) 
#Pages IEICE-4 
Date of Issue IEICE-AP-2017-11-01,IEICE-RCS-2017-11-01 


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