Telecommunications – Transmitter – Diversity
Reexamination Certificate
2007-05-01
2010-12-28
Tran, CongVan (Department: 2617)
Telecommunications
Transmitter
Diversity
C455S102000, C455S103000, C375S267000, C370S334000
Reexamination Certificate
active
07860465
ABSTRACT:
Apparatus, and an associated method, for providing transmit diversity to an open-loop MIMO communication scheme, such as a point to multipoint broadcast service in a cellular system. Multiple data streams of the broadcast data are broadcast by way of transmit diversity antennas of a sending station. The data symbols of the separate data streams are phase-shifted to be offset in phase from one another. The data streams, once the data symbols thereof are selectably phase-shifted by a phase shifter, are applied by an applier to sending nodes of the respective cells.
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Yue Zhang, et. al: “Future Transmitter/Receiver Diversity Schemes in Broadcast Wireless Networks”, IEEE Communication Magazine, pp. 120-127, vol. 44, No. 10, Oct. 2006, XP002451396.
Research In Motion Limited
Tran CongVan
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