Multi-beam antenna transmitter/receiver and...

Details Multi-beam antenna transmitter/receiver and... Multi-beam antenna transmitter/receiver and...

2007-09-25

2007-09-25

Feild, Joseph (Department: 2617)

Telecommunications

Transmitter and receiver at same station

Radiotelephone equipment detail

C342S369000, C342S373000, C342S368000

Reexamination Certificate

active

10509017

ABSTRACT:
A multi-beam antenna transmitter/receiver includes reception beam formation units (1041-104M) which form a plurality of reception beams, and transmission beam formation units (1131-113J) which form a plurality of transmission beams. The multi-beam antenna transmitter/receiver further includes reception beam calculation units (1081-108M) which calculate overall reception qualities from the reception qualities for the path delays of user signals for respective reception beams, and a transmission beam selection unit (109) which selects a reception beam excellent in overall reception quality and selects a transmission beam having a direction which coincides with or is close to the direction of the selected reception beam. An optimum transmission beam can be selected even in the multipath environment.

REFERENCES:
patent: 6240149 (2001-05-01), Yukitomo et al.
patent: 6580394 (2003-06-01), Wang et al.
patent: 6728554 (2004-04-01), Wegner
patent: 6754512 (2004-06-01), Iinuma
patent: 7054929 (2006-05-01), Irie et al.
patent: 7058418 (2006-06-01), Doi et al.
patent: 7062273 (2006-06-01), Obayashi
patent: 2001/0049295 (2001-12-01), Matsuoka et al.
patent: 05-41607 (1993-02-01), None
patent: 10-285092 (1998-10-01), None
patent: 2001-251233 (2001-09-01), None

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