Collaborative beamforming techniques for data transmission in wireless sensor networks

Collaborative beamforming is a technique for improving energy efficiency of uplink communications in wireless sensor networks. It is done by synchronizing carrier phases of individual sensor nodes precisely enough, so that they jointly form a beampattern with a stable mainlobe. In this paper, we analyze the impact of additive noise in the received signal on the behavior of an iterative phase synchronization scheme. Besides, we analyze the bit error rate performance of such collaborative transmission. In particular, we consider a decentralized antenna array where sensors are allowed to perform distributed carrier synchronization and collaborative data transmission simultaneously. We evaluate the system performance by using numerical simulations and provide a semi-analytical solution for the algorithm convergence characteristics and the overall bit error rate as a function of the algorithm's iteration index.

[1]  Kenneth Tze Kin Teo,et al.  Adaptive Phase Synchronisation Algorithm for Collaborative Beamforming in Wireless Sensor Networks , 2013, 2013 7th Asia Modelling Symposium.

[2]  H. Vincent Poor,et al.  Opportunistic collaborative beamforming with one-bit feedback , 2008, SPAWC 2008.

[3]  Upamanyu Madhow,et al.  A feedback-based distributed phased array technique and its application to 60-GHz wireless sensor network , 2008, 2008 IEEE MTT-S International Microwave Symposium Digest.

[4]  Lang Tong,et al.  Sensor Networks With Mobile Access: Energy and Capacity Considerations , 2006, IEEE Transactions on Communications.

[5]  R. Henkelman.  Measurement of signal intensities in the presence of noise in MR images. , 1985, Medical physics.

[6]  Raghuraman Mudumbai,et al.  Distributed Transmit Beamforming Using Feedback Control , 2006, IEEE Transactions on Information Theory.

[7]  Zhen Yang,et al.  Opportunistic Collaborative Beamforming with Phase-Compensation and Limited Feedback , 2011, 2011 IEEE Global Telecommunications Conference - GLOBECOM 2011.

[8]  Sergio Benedetto,et al.  Principles of Digital Transmission: With Wireless Applications , 1999 .

[9]  Carles Antón-Haro,et al.  Distributed Beamforming with Sidelobe Control Using One Bit of Feedback , 2011, 2011 IEEE 73rd Vehicular Technology Conference (VTC Spring).

[10]  Pei-Jung Chung,et al.  Exploiting Negative Feedback Information for One-Bit Feedback Beamforming Algorithm , 2012, IEEE Transactions on Wireless Communications.