beamforming

Also known as spatial filtering

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ACM Classification Code (2012): 10003249

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~16 min read

Article

11 sections

Contents

Techniques
Sonar beamforming requirements
Schemes
Evolved beamformer
History in wireless communication standards
Digital, analog, and hybrid
For speech audio
See also
References
General
External links

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Beamforming or spatial filtering is a signal processing technique used in sensor arrays for directional signal transmission or reception. This is achieved by combining elements in an antenna array in such a way that signals at particular angles experience constructive interference while others experience destructive interference. Beamforming can be used at both the transmitting and receiving ends in order to achieve spatial selectivity. The improvement compared with omnidirectional reception/transmission is known as the directivity of the array.