Multiplex communications – Generalized orthogonal or special mathematical techniques – Quadrature carriers
Reexamination Certificate
2007-04-17
2010-10-05
Pérez-Gutiérrez, Rafael (Department: 2617)
Multiplex communications
Generalized orthogonal or special mathematical techniques
Quadrature carriers
C370S207000, C370S281000, C370S343000, C370S344000, C455S101000, C455S103000
Reexamination Certificate
active
07808882
ABSTRACT:
A method and system optimizes the transmission of a downlink reference signal (DLRS) in a wireless communication system that uses orthogonal division multiple access (OFDMA) for the downlink. Each Node-B (base station) is capable of transmitting the DLRS reference symbols in different subframes of the OFDM radio frame and changing both the number and location of the subframes in response to changing network conditions. The network conditions include the number of terminals being served by the Node-B and multiple access interference (MAI) from adjacent Node-Bs.
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Behrooz Neda
Berthold Thomas R.
Perez-Gutierrez Rafael
Sharp Laboratories of America Inc.
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