Title :
Collaborative beamforming in ad hoc networks
Author :
Ochiai, Hideki ; Mitran, Patrick ; Poor, H. Vincent ; Tarokh, Vahid
Author_Institution :
Yokohama Nat. Univ., Japan
Abstract :
The performance of collaborative beamforming is analyzed using the theory of random arrays. The statistical average and distribution of the beam patterns of randomly generated phased arrays are derived in the framework of wireless ad hoc sensor networks. Each sensor node is assumed to have a single isotropic antenna and nodes in the cluster collaboratively transmit the signal such that the signal in the target direction is coherently added in the far-field region. The distribution of the maximum beam pattern sidelobe is also analyzed and a closed-form bound is derived based on the Gaussian approximation method.
Keywords :
Gaussian channels; ad hoc networks; antenna phased arrays; antenna radiation patterns; array signal processing; statistical distributions; wireless sensor networks; Gaussian approximation method; ad hoc networks; beam pattern distribution; closed-form bound; collaborative beamforming; far-field region; maximum beam pattern sidelobe; performance; random array theory; randomly generated phased arrays; single isotropic antenna; statistical average; wireless sensor networks; Ad hoc networks; Array signal processing; Collaboration; Directive antennas; Pattern analysis; Performance analysis; Phased arrays; Sensor arrays; Transmitting antennas; Wireless sensor networks;
Conference_Titel :
Information Theory Workshop, 2004. IEEE
Print_ISBN :
0-7803-8720-1
DOI :
10.1109/ITW.2004.1405336
