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Distributed transmit beamforming based on a 3-bit feedback system

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2 Author(s)
Tushar, W. ; Res. Sch. of Inf. Sci. & Eng., Australian Nat. Univ., Canberra, ACT, Australia ; Smith, D.B.

A distributed transmit beamforming technique is developed for both a static and a time-varying channel in a wireless sensor network. This algorithm is based on an iterative procedure that synchronizes the transmitters to send a common message signal coherently to the receiver, using a 3-bit feedback in each timeslot. Results show that the received power increases quadratically with number of transmitters, and there is a substantially improved performance over a 1-bit feedback system and system without feedback.

Published in:

Signal Processing Advances in Wireless Communications (SPAWC), 2010 IEEE Eleventh International Workshop on

Date of Conference:

20-23 June 2010