Limitations, performance and instrumentation of closed-loop feedback based distributed adaptive transmit beamforming in WSNs

Author

Sigg, Stephan ; Masri, Rayan Merched El ; Ristau, Julian ; Beigl, Michael

Author_Institution

Inst. of Oper. Syst. & Comput. Networks, Tech. Univ. Braunschweig, Braunschweig, Germany

fYear

2009

fDate

7-10 Dec. 2009

Firstpage

451

Lastpage

456

Abstract

We study closed-loop feedback based approaches to distributed adaptive transmit beamforming in wireless sensor networks. For a global random search scheme we discuss the impact of the transmission distance on the feasibility of the synchronisation approach. Additionally, a quasi novel method for phase synchronisation of distributed adaptive transmit beam-forming in wireless sensor networks is presented that improves the synchronisation performance. Finally, we present measurements from an instrumentation using USRP software radios at various transmit frequencies and with differing network sizes.

Keywords

array signal processing; software radio; wireless sensor networks; USRP software radios; WSN; closed-loop feedback; distributed adaptive transmit beam-forming; distributed adaptive transmit beamforming; phase synchronisation; wireless sensor networks; Array signal processing; Costs; Energy consumption; Feedback; Frequency synchronization; Instruments; Large-scale systems; MIMO; RF signals; Wireless sensor networks;

fLanguage

English

Publisher

ieee

Conference_Titel

Intelligent Sensors, Sensor Networks and Information Processing (ISSNIP), 2009 5th International Conference on

Conference_Location

Melbourne, VIC

Print_ISBN

978-1-4244-3517-3

Electronic_ISBN

978-1-4244-3518-0

Type

conf

DOI

10.1109/ISSNIP.2009.5416750

Filename

5416750