EDCA delay analysis of spatial diversity in IEEE 802.11-based real-time wireless sensor and actuator networks

Author

Maadani, Mohsen ; Motamedi, Seyed Ahmad

Author_Institution

Dept. of Electr. Eng., Amirkabir Univ. of Technol., Tehran, Iran

fYear

2011

fDate

6-9 Nov. 2011

Firstpage

675

Lastpage

679

Abstract

Reliability and packet delay, are the two most challenging parameters of wireless sensor and actuator networks (WSAN). In this paper, saturation delay characteristics of Multiple Input Multiple Output (MIMO)-enabled IEEE 802.11 technology utilizing Enhanced Distributed Channel Access (EDCA) at Medium Access Control (MAC) and a simple Spatial-Diversity (SD) scheme in PHYsical (PHY) layer has been thoroughly analysed. Results show that due to the low Signal to Noise Ratio (SNR) in WSAN environment, simple modulation schemes with lower spectral efficiency have better delay and reliability performance. Otherwise, the delay will be highly sensitive to SNR, packet payload, number of competing nodes and other parameters.

Keywords

MIMO communication; access protocols; diversity reception; telecommunication network reliability; wireless LAN; wireless sensor networks; EDCA delay analysis; IEEE 802.11-based real-time wireless sensor-actuator networks; MIMO-enabled IEEE 802.11 technology; PHY layer; SD scheme; WSAN; enhanced distributed channel access; medium access control; modulation schemes; multiple-input multiple-output technology; packet delay; physical layer; reliability performance; saturation delay characteristics; signal-to-noise ratio; spatial diversity scheme; spectral efficiency; Bit error rate; Delay; MIMO; Payloads; Reliability; Signal to noise ratio; Wireless communication; IEEE 802.11; Maximum Likelihood Receiver; Real-Time; Spatial Diversity; Wireless Sensor and Actuator Network (WSAN);

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communication Systems (ISWCS), 2011 8th International Symposium on

Conference_Location

Aachen

ISSN

2154-0217

Print_ISBN

978-1-61284-403-9

Electronic_ISBN

2154-0217

Type

conf

DOI

10.1109/ISWCS.2011.6125438

Filename

6125438