OFDM communication systems, transmitters and methods

Details OFDM communication systems, transmitters and methods OFDM communication systems, transmitters and methods

2011-06-14

2011-06-14

Pham, Chi H (Department: 2471)

Multiplex communications

Generalized orthogonal or special mathematical techniques

Particular set of orthogonal functions

C370S210000

Reexamination Certificate

active

07961591

ABSTRACT:
A transmitter100transmits an orthogonal frequency division multiplexing (OFDM) signal. A control unit104receives a group of input symbols (X0to XN-1) based on which the transmitted signal is to be generated. The control unit selects, from among a plurality of available allocations of input symbols to sub-carriers, one allocation to apply to the received group of input symbols. Each available allocation serves to allocate the input symbols to respective sub-carriers in a different way from each other available allocation. The allocation selection is based on predicted values of a predetermined property, e.g. a peak-to-average power ratio (PAPR), of the transmitted signal for different available allocations. The available allocations may be different rotations. Further elements102, 14, 16of the transmitter generate the transmitted signal using the selected allocation.

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