Multiplex communications – Generalized orthogonal or special mathematical techniques – Particular set of orthogonal functions
Reexamination Certificate
2011-07-19
2011-07-19
Lee, Andrew (Department: 2472)
Multiplex communications
Generalized orthogonal or special mathematical techniques
Particular set of orthogonal functions
C370S210000
Reexamination Certificate
active
07983145
ABSTRACT:
The invention applies Discrete Fourier Transform (DFT)-spread-OFDM (Orthogonal Frequency Division Multiple Access), which is proposed for the Third Generation Partnership Program Long Term Evolution (3GPP LTE) uplink. The core of the invention is that we use a cyclic frequency shift operation over part of the bandwidth spanned by the Inverse Fast Fourier Transform (IFFT). Furthermore, the cyclic frequency shift enables efficient inter-cell interference coordination in case neighboring cells hop with the same pattern and different initial offsets. An equivalent operation may be performed in the time domain.
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Coats & Bennett P.L.L.C.
Lee Andrew
Telefonaktiebolaget LM Ericsson (publ)
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