Communications: directive radio wave systems and devices (e.g. – Directive – Beacon or receiver
Reexamination Certificate
2005-07-26
2005-07-26
Phan, Dao L. (Department: 3662)
Communications: directive radio wave systems and devices (e.g.,
Directive
Beacon or receiver
C342S423000
Reexamination Certificate
active
06922170
ABSTRACT:
Methods and apparatus are provided for determining a direction of arrival (DOA) (46) of a Radio Frequency (RF) signal (32) transmitted by a remote unit (22) in a wireless communication system (20). The methods comprise receiving the RF signal (32) with multiple antennas (34,36,38,40,42,44) of the antenna array (26) and determining a preliminary direction of arrival (DOA) (78) for the RF signal (32) received with the multiple of antennas (34,36,38,40,42,44) of the antenna array (26). The methods also comprise selecting a coefficient (80) for the antenna array (26) based at least in part upon the preliminary DOA978), modifying the RF signal (32) with the coefficient (80) to generate a modified RF signal (82), and determining the DOA (46) of the RF signal (32) with the modified RF signal (82).
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Ingrassia Fisher & Lorenz P.C.
Motorola Inc.
Phan Dao L.
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