COGNITIVE RADIO SPECTRUM SENSOR EMPLOYING PEAK-TO-AVERAGE RATIO AS THE SIGNAL FEATURE
First Claim
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1. A white space sensing method, comprising:
- measuring a peak to average power ratio (PAPR) of a signal of a channel in a spectrum band;
determining whether a ratio of the measured PAPR to a predetermined PAPR of a modulation scheme associated with the signal meets a predetermined threshold; and
indicating that the channel is available for use by an unlicensed user when the ratio meets the predetermined threshold.
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Abstract
A white space sensing method includes measuring a peak to average power ratio (PAPR) of a signal of a channel in a spectrum band. The method also includes determining whether a ratio of the measured PAPR to a predetermined PAPR of a modulation scheme associated with the signal meets a predetermined threshold. The method further includes indicating the channel is available for use by an unlicensed user when the ratio meets the predetermined threshold.
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Citations
18 Claims
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1. A white space sensing method, comprising:
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measuring a peak to average power ratio (PAPR) of a signal of a channel in a spectrum band; determining whether a ratio of the measured PAPR to a predetermined PAPR of a modulation scheme associated with the signal meets a predetermined threshold; and indicating that the channel is available for use by an unlicensed user when the ratio meets the predetermined threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An apparatus for white space sensing, comprising:
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means for measuring a peak to average power ratio (PAPR) of a signal of a channel in a spectrum band; means for determining whether a ratio of the measured PAPR to a predetermined PAPR of a modulation scheme associated with the signal meets a predetermined threshold; and means for indicating that the channel is available for use by an unlicensed user when the ratio meets the predetermined threshold.
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10. An apparatus for white space sensing, comprising:
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a memory; and at least one processor coupled to the memory and configured; to measure a peak to average power ratio (PAPR) of a signal of a channel in a spectrum band; to determine whether a ratio of the measured PAPR to a predetermined PAPR of a modulation scheme associated with the signal meets a predetermined threshold; and to indicate that the channel is available for use by an unlicensed user when the ratio meets the predetermined threshold. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A computer program product for wireless communications in a wireless network, comprising:
a computer-readable medium having non-transitory program code recorded thereon, the program code comprising; program code to measure a peak to average power ratio (PAPR) of a signal of a channel in a spectrum band; program code to determine whether a ratio of the measured PAPR to a predetermined PAPR of a modulation scheme associated with the signal meets a predetermined threshold; and program code to indicate that the channel is available for use by an unlicensed user when the ratio meets the predetermined threshold.
Specification