Multi-Tone Transmission
7 Assignments
0 Petitions
Accused Products
Abstract
A Multi-tone transmission system processes input data through a plurality of intermediate processing stages 12, 14, 16 and corresponding stages of intermediate data 18, 20. A symbol including a number of tones is obtained therefrom by an inverse Fourier transform 24 and stored in a buffer 158. The peak amplitude that the symbol would contain after the subsequent processing in the analogue front end 146 is modelled and compared to a threshold. If the modelled peak amplitude in the symbol exceeds the threshold, the symbol stored in buffer 158 is regenerated. The symbols stored in the buffer are output through analogue front end 146.
12 Citations
40 Claims
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1-24. -24. (canceled)
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25. A method for peak amplitude reduction, comprising:
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processing input data through an intermediate preprocessing stage to generate a symbol; modeling a predicted peak amplitude in the symbol; comparing the predicted peak amplitude to a threshold amplitude; if the predicted peak amplitude is less than the threshold amplitude, transmitting the symbol; and if the predicted peak amplitude exceeds the threshold amplitude, generating a reprocessed symbol, comprising (i) amending the input data, and (ii) reprocessing the input data through the intermediate processing stage. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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36. A tangible computer readable medium having stored thereon, computer executable instructions that, if executed by a processor, cause the processor to perform a method comprising:
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processing input data through an intermediate preprocessing stage to generate a symbol; modeling a predicted peak amplitude in the symbol; comparing the predicted peak amplitude to a threshold amplitude; if the predicted peak amplitude is less than the threshold amplitude, transmitting the symbol; and if the predicted peak amplitude exceeds the threshold amplitude, generating a reprocessed symbol, comprising (i) amending the input data, and (ii) reprocessing the input data through the intermediate processing stage.
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37. A transmitter, comprising:
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an intermediate preprocessing circuit configured to generate a symbol; a symbol buffer coupled to the intermediate preprocessing circuit and configured to store the symbol; a modeling circuit coupled to the intermediate preprocessing circuit and configured to generate a predicted peak amplitude of the symbol; a peak detector coupled to the modeling circuit and configured to compare the predicted peak amplitude to a threshold; and a regeneration controller coupled to the peak detector and configured to amend intermediate data associated with the symbol. - View Dependent Claims (38, 39, 40)
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Specification