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US 7,599,338 B2Granted
Peak power reduction method for wireless communication systems and corresponding transmitter
AssigneeSequans Communication
InventorHikmet Sari
Life of this patent
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Abstract
A peak power reduction method for wireless communication systems is proposed in which a constellation shaping is applied on input data symbols in order to reduce the peak power of the signal samples to be transmitted by the communication system. According to the invention, the symbols are modified using functions each representing the contribution of a symbol to the output signal samples of large magnitude.
Claims11
Peak power reduction method for wireless communication systems using transform based signal formats such as OFDM and CDM communication systems,
- comprising:
- applying a constellation shaping for modifying the representation, in a signal constellation, of possible values of transmitted data symbols generating the signal samples to be transmitted by the communication system,
- wherein the symbols are modified using functions each representing the contribution of a symbol to the output signal samples of large magnitude.
Dependencies are inferred from the claim text.