Title :
Algorithmic approaches to distributed adaptive transmit beamforming
Author :
Sigg, Stephan ; Beigl, Michael
Author_Institution :
Inst. of Oper. Syst. & Comput. networks, Tech. Univ. Braunschweig, Braunschweig, Germany
Abstract :
We present three approaches for algorithmic improvements on distributed adaptive transmit beamforming in wireless sensor networks. These algorithms reduce the time to synchronise carrier signals among nodes compared to the global random search approaches commonly applied to this problem. For a local random search heuristic we provide an asymptotic bounds on the optimisation time. All approaches are also studied in mathematical simulations on greater networks sizes.
Keywords :
array signal processing; mathematical analysis; optimisation; search problems; synchronisation; wireless sensor networks; algorithmic approaches; asymptotic bounds; carrier signals; distributed adaptive transmit beamforming; global random search; local random search heuristic; mathematical simulations; optimisation time; wireless sensor networks; Array signal processing; Feedback; Frequency synchronization; MIMO; RF signals; Radio frequency; Sensor phenomena and characterization; Signal processing; Transmitting antennas; Wireless sensor networks;
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
DOI :
10.1109/ISSNIP.2009.5416780