Impact of antenna directivity for carrier sensing in high density WLAN using adaptive directional antenna

Author

Umehira, Masahiro ; Ohtomo, Yohei

Author_Institution

Grad. Sch. of Sci. & Eng., Ibaraki Univ., Hitachi, Japan

fYear

2010

fDate

7-10 Nov. 2010

Firstpage

1

Lastpage

5

Abstract

This paper describes impact of antenna directivity for carrier sensing on system throughput in high density wireless LAN (WLAN) using adaptive directional antenna. Adaptive directional antenna is effective to improve system throughput of WLAN, however it is necessary to clear the impact of antenna directivity used for carrier sensing in CSMA based WLAN since directional antenna may increase packet collisions due to a hidden terminal problem. Assuming IEEE802.11n SISO mode OFDM PHY and infrastructure mode WLAN deployment, the impact of antenna directivity for carrier sensing is evaluated in various WLAN deployment density. Simulation results show that the directional antenna carrier sensing outperforms the omnidirectional antenna carrier sensing.

Keywords

carrier sense multiple access; directive antennas; wireless LAN; CSMA; IEEE802.11n SISO mode; OFDM PHY; WLAN; adaptive directional antenna; antenna directivity; carrier sensing; omnidirectional antenna carrier sensing; wireless LAN; Adaptive directional antenna; Antenna directivity; Carrier sensing; High density; Wireless LAN;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Sciences in Biomedical and Communication Technologies (ISABEL), 2010 3rd International Symposium on

Conference_Location

Rome

Print_ISBN

978-1-4244-8131-6

Type

conf

DOI

10.1109/ISABEL.2010.5702809

Filename

5702809