Adaptive beam-forming system using hierarchical weight banks...

Details Adaptive beam-forming system using hierarchical weight banks... Adaptive beam-forming system using hierarchical weight banks...

2007-12-25

2007-12-25

Phan, Dao (Department: 3662)

Communications: directive radio wave systems and devices (e.g.,

Directive

Including a steerable array

C342S373000

Reexamination Certificate

active

11071249

ABSTRACT:
An adaptive beam-forming system using hierarchical weight banks for antenna arrays in wireless communication systems is disclosed. The present invention can be applied for both reception and transmission beam-forming. The hierarchical weight banks contain weights that are pre-calculated based on pre-set beam look directions. By comparing measurements of chosen signal quality metrics for pre-set look directions, the best weights, and thus the best beam look direction, can be selected from the weight banks.

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Godara, L., “Application of Antenna Arrays to Mobile Communications, Part II: Beam-Forming and Direction-of-Arrival Considerations,”Proceedings of the IEEE, vol. 85, No. 8, Aug. 1997, pp. 1195-1245.
Van Veen et al., “Beamforming: A Versatile Approach to Spatial Filtering,”IEEE ASSP Magazine, Apr. 1988, pp. 4-24.

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