Adaptive air interface waveform
First Claim
1. A system for generating an adaptive air interface waveform, the system comprising:
- an adaptive multi-carrier organization and signaling component operable to generate a waveform having a multi-carrier organization comprising a variable carrier frequency and variable bandwidth signal that comprises one or more subcarriers that are dynamically placeable over a range of frequencies, each subcarrier being separately modulated according to a direct sequence (DS) spread spectrum (SS) modulation technique, the waveform having an embedded pilot usable to optimize one or more spectrum efficiencies of the waveform; and
an adaptive multi-level bandwidth-efficient coding and modulation (BECM) component receive the waveform from the adaptive multi-carrier organization and signaling component, the BECM component operable to adapt a modulation constellation, a code rate, and a code length of the waveform according to an available spectrum and one or more varying conditions of the subcarrier in order to provide the waveform as the adaptive air interface waveform.
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Accused Products
Abstract
In one embodiment, a method for generating an adaptive air interface waveform includes generating a waveform that includes a variable carrier frequency and variable bandwidth signal. The variable bandwidth signal includes one or more subcarriers that are dynamically placeable over a range of frequencies, and each subcarrier is separately modulated according to a direct sequence (DS) spread spectrum (SS) technique. The waveform has an embedded pilot usable to optimize one or more spectrum efficiencies of the waveform. A modulation constellation, a code rate, and a code length of the generated waveform are adapted according to an available spectrum and one or more sub-carrier conditions.
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Citations
31 Claims
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1. A system for generating an adaptive air interface waveform, the system comprising:
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an adaptive multi-carrier organization and signaling component operable to generate a waveform having a multi-carrier organization comprising a variable carrier frequency and variable bandwidth signal that comprises one or more subcarriers that are dynamically placeable over a range of frequencies, each subcarrier being separately modulated according to a direct sequence (DS) spread spectrum (SS) modulation technique, the waveform having an embedded pilot usable to optimize one or more spectrum efficiencies of the waveform; and
an adaptive multi-level bandwidth-efficient coding and modulation (BECM) component receive the waveform from the adaptive multi-carrier organization and signaling component, the BECM component operable to adapt a modulation constellation, a code rate, and a code length of the waveform according to an available spectrum and one or more varying conditions of the subcarrier in order to provide the waveform as the adaptive air interface waveform. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for generating an adaptive air interface waveform, the method comprising:
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generating a waveform having a multi-carrier organization comprising a variable carrier frequency and variable bandwidth signal that comprises one or more subcarrier that are dynamically placeable over a range of frequencies, each subcarrier being separately modulated according to a direct sequence (DS) spread spectrum (SS) modulation technique, the waveform having an embedded pilot usable to optimize one or more spectrum efficiencies of the waveform; and
adapting a modulation constellation, a code rate, and a code length of the waveform according to an available spectrum and one or more varying conditions of the subcarrier in order to provide the waveform as the adaptive air interface waveform. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. Software for generating an adaptive air interface waveform, the software embodied in media and when executed operable to:
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generate a waveform having a multi-carrier organization comprising a variable carrier frequency and variable bandwidth signal that comprises one or more subcarriers that are dynamically placeable over a range of frequencies, each subcarrier being separately modulated according to a direct sequence (DS) spread spectrum (SS) modulation technique, the waveform having an embedded pilot usable to optimize one or more spectrum efficiencies of the waveform; and
adapt a modulation constellation, a code rate, and a code length of the waveform according to a available spectrum and one or more varying conditions of the subcarrier in order to provide the waveform as the adaptive air interface waveform. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. A system for generating an adaptive air interface waveform, the system comprising:
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means for generating a waveform having a multi-carrier organization comprising a variable carrier frequency and variable bandwidth signal that comprises on or more subcarriers that are dynamically placeable over a range of frequencies, each subcarrier being separately modulated according to a direct sequence (DS) spread spectrum (SS) modulation technique, the waveform having an embedded pilot usable to optimize one or more spectrum efficiencies of the waveform; and
means for receiving the waveform from the means for generating the waveform and adapting a modulation constellation, a code rate, and a code length of the waveform according to an available spectrum and one or more varying conditions of the subcarrier in order to provide the waveform as the adaptive air interface waveform.
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Specification