Telecommunications – Transmitter and receiver at separate stations – With control signal
Reexamination Certificate
2007-02-26
2010-10-05
Anderson, Matthew D (Department: 2618)
Telecommunications
Transmitter and receiver at separate stations
With control signal
C370S335000, C370S342000, C370S441000, C370S208000, C370S320000, C370S331000, C370S376000, C370S515000, C370S516000, C370S517000, C342S367000, C701S213000, C375S362000, C375S365000, C375S367000
Reexamination Certificate
active
07809337
ABSTRACT:
An apparatus and method for adjusting transmission phasing in a point-to-point communication link is disclosed. The relative phases of the transmissions from each antenna are adjusted before transmission to give optimum gain when received by two or more antenna elements and a signal combining element. The signal includes a data component, consisting of a subset of the subcarriers modulated with the input data, which is common to transmissions from all antenna elements; and a phase reference component consisting of a subset of the subcarriers that are modulated with a predetermined phase. The signal combining element is operable to receive the components and extract phase information. A phase adjustment signaling device compares extracted phase information and signals the plurality of transmitting antenna elements to adjust the relative transmission phasing between the signals transmitted from a plurality of transmitting antenna elements to permit a receiver to receive the transmitted signals with a desired phase relationship.
REFERENCES:
patent: 5943331 (1999-08-01), Lavean
patent: 6031487 (2000-02-01), Mickelson
patent: 7430257 (2008-09-01), Shattil
patent: 7593449 (2009-09-01), Shattil
patent: 2007/0211786 (2007-09-01), Shattil
patent: 2007/0222677 (2007-09-01), Strong
patent: 1079543 (2001-02-01), None
patent: 1359684 (2003-11-01), None
patent: 1478105 (2004-11-01), None
Ye Li, et al. “Transmitter Diversity for OFDM Systems and Its Impact on High-Rate Data Wireless Networks”, IEEE Journal on Selected Areas in Communications, IEEE Service Center, Piscataway, USA; vol. 17, No. 7, Jul. 1999; XP011054988; ISSN:0733-8716.
PCT Search Report Dated Jun. 1, 2007.
Anderson Matthew D
Curtis Anthony P.
Gonzales April G
Motorola Inc.
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