OFDM signal spectrum shaping
First Claim
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1. An orthogonal frequency division multiplexing (OFDM) signal spectrum shaping device, comprising:
- an input interface configured to receive an input signal;
a modulation portion coupled to the input interface, configured to modulate the input signal to generate a plurality of uncompensated sub-carriers; and
a sub-carrier gain control module configured to selectively apply a plurality of gain factors to the plurality of uncompensated sub-carriers to generate a plurality of compensated sub-carriers that are substantially equal in amplitude.
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Abstract
An orthogonal frequency division multiplexing (OFDM) signal spectrum shaping device comprises an input interface configured to receive an input signal, a modulation portion coupled to the input interface, configured to modulate the input signal to generate a plurality of uncompensated sub-carriers, and a sub-carrier gain control module configured to selectively apply a plurality of gain factors to the plurality of uncompensated sub-carriers to generate a plurality of compensated sub-carriers that are substantially equal in amplitude.
68 Citations
21 Claims
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1. An orthogonal frequency division multiplexing (OFDM) signal spectrum shaping device, comprising:
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an input interface configured to receive an input signal; a modulation portion coupled to the input interface, configured to modulate the input signal to generate a plurality of uncompensated sub-carriers; and a sub-carrier gain control module configured to selectively apply a plurality of gain factors to the plurality of uncompensated sub-carriers to generate a plurality of compensated sub-carriers that are substantially equal in amplitude. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for shaping an orthogonal frequency division multiplexing (OFDM) signal spectrum, comprising:
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receive an input signal; modulating the input signal and generate a plurality of uncompensated sub-carriers; and selectively applying a plurality of gain factors to the plurality of uncompensated sub-carriers to generate a plurality of compensated sub-carriers that are substantially equal in amplitude. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. An orthogonal frequency division multiplexing (OFDM) signal spectrum shaping system, comprising:
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an input interface configured to receive an input signal; a processor configured to; modulate the input signal to generate a plurality of uncompensated sub-carriers; and selectively apply a plurality of gain factors to the plurality of uncompensated sub-carriers to generate a plurality of compensated sub-carriers that are substantially equal in amplitude.
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Specification