System and method for controlling combined radio signals
First Claim
1. A method for combining signals, comprising:
- receiving information defining at least two signal streams, each having a respective peak amplitude and defining at least one of;
an orthogonal frequency division multiplexed radio frequency signal stream, anda radio frequency signal stream having a bandwidth of at least 10 MHz,the at least two signal streams each having at least one non mutually orthogonal component, such that concurrent communication of the at least two signal streams through a communication channel amplified with an amplifier having a non-linear distortion, would cause inter-symbol interference with at least one of the at least two signal streams;
defining successive periods of each of the at least two signal streams;
combining the defined successive periods of each of the at least two signal streams across a range of respective time shifts, to produce successive ranges of superposed signals for successive periods, subject to constructive interference and the inter-symbol interference;
selecting, for each respective successive period, from the respective range of superposed signal for the successive periods, a preferred superposed signal for the respective successive period based on at least one selection criterion; and
amplifying a succession of the selected preferred superposed signals, with the amplifier having the non-linear distortion.
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Accused Products
Abstract
A method for controlling a combined waveform, representing a combination of at least two signals having orthogonal frequency multiplexed signal components, comprising: receiving information defining the at least two signals; transforming the information defining each signal to a representation having orthogonal frequency multiplexed signal components, such that at least one signal has at least two alternate representations of the same information, and combining the transformed information using the at least two alternate representations, in at least two different ways, to define respectively different combinations; analyzing the respectively different combinations with respect to at least one criterion; and outputting a respective combined waveform or information defining the waveform, representing a selected combination of the transformed information from each of the at least two signals selected based on the analysis.
405 Citations
20 Claims
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1. A method for combining signals, comprising:
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receiving information defining at least two signal streams, each having a respective peak amplitude and defining at least one of; an orthogonal frequency division multiplexed radio frequency signal stream, and a radio frequency signal stream having a bandwidth of at least 10 MHz, the at least two signal streams each having at least one non mutually orthogonal component, such that concurrent communication of the at least two signal streams through a communication channel amplified with an amplifier having a non-linear distortion, would cause inter-symbol interference with at least one of the at least two signal streams; defining successive periods of each of the at least two signal streams; combining the defined successive periods of each of the at least two signal streams across a range of respective time shifts, to produce successive ranges of superposed signals for successive periods, subject to constructive interference and the inter-symbol interference; selecting, for each respective successive period, from the respective range of superposed signal for the successive periods, a preferred superposed signal for the respective successive period based on at least one selection criterion; and amplifying a succession of the selected preferred superposed signals, with the amplifier having the non-linear distortion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system for combining signals, comprising:
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an input port configured to receive information defining at least two signal streams, each having a respective peak amplitude and defining at least one of; an orthogonal frequency division multiplexed radio frequency signal stream, and a radio frequency signal stream having a bandwidth of at least 10 MHz, the at least two signal streams each having at least one non mutually orthogonal component, such that concurrent communication of the at least two signal streams through a communication channel comprising an amplifier having non-linear distortion, would cause inter-symbol interference with at least one of the at least two signal streams; at least one of the two signal streams comprising successive periods; at least one automated processor, configured to; combine the defined successive periods of each of the at least two signal streams across a range of respective time shifts, to produce successive ranges of superposed signals for successive periods, subject to constructive interference and the inter-symbol interference; and select, for each respective successive period, from the respective range of superposed signal for the successive periods, a preferred superposed signal for the respective successive period based on at least one selection criterion; and the amplifier, having the non-linear distortion, configured to amplify a succession of the selected preferred superposed signals. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A system for combining signals, comprising:
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a memory, configured to store digital representations of at least two signal streams, each having a respective peak amplitude and defining at least one of; an orthogonal frequency division multiplexed radio frequency signal stream, and a radio frequency signal stream having a bandwidth of at least 10 MHz, the at least two signal streams each having at least one non mutually orthogonal component, such that concurrent communication of the at least two signal streams through a communication channel comprising an analog amplifier, having a non-linear distortion, would cause inter-symbol interference; at least one automated processor, configured to; read the memory; combining successive periods of each of the at least two signal streams over a range of respective time shifts comprising a plurality of different combinations, to produce successive ranges of combinations for successive periods, subject to constructive interference and the inter-symbol interference; select, for each respective successive period, from the respective range of superposed signals for the successive periods, a preferred combination based on at least one selection criterion; and define an analog waveform corresponding a succession of the selected preferred combinations; and the analog amplifier, having the non-linear distortion, configured to amplify the succession of the selected combinations. - View Dependent Claims (18, 19, 20)
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Specification