System and method for the mitigation of spectral lines in an ultrawide bandwidth transceiver
First Claim
1. A method of mitigating spectral lines in a wireless signal, comprising:
- generating a code word comprising a plurality of pulses;
generating a plurality of code-word-modulated wavelets in response to the code word;
modulating the plurality of code-word-modulated wavelets with a bit of transmit data to form a plurality of data-modulated wavelets;
transmitting the plurality of data-modulated wavelets.
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Abstract
A method apparatus are provided for mitigating spectral lines in a wireless signal. First a code word is generated that is made up of a plurality of binary or ternary encoded pulses. Then a plurality of code-word-modulated wavelets are generated in response to the code word. These wavelets can be Gaussian monopulses, repeated cycles of a sine wave, or other shaped impulse signals. The plurality of code-word-modulated wavelets are then modulated with a bit of transmit data to form a plurality of data-modulated wavelets. This modulation serves to whiten the signals since the transmit data is effectively random. Finally, the plurality of data-modulated wavelets are transmitted to a remote device.
8 Citations
23 Claims
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1. A method of mitigating spectral lines in a wireless signal, comprising:
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generating a code word comprising a plurality of pulses;
generating a plurality of code-word-modulated wavelets in response to the code word;
modulating the plurality of code-word-modulated wavelets with a bit of transmit data to form a plurality of data-modulated wavelets;
transmitting the plurality of data-modulated wavelets. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of mitigating spectral lines in a wireless signal, comprising:
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generating a code word comprising a plurality of pulses;
generating a plurality of code-word-modulated wavelets in response to the code word;
mixing the plurality of code-word-modulated wavelets with a scrambled transmit data signal to form a plurality of scrambled wavelets;
amplifying the plurality of scrambled wavelets to form a plurality of amplified wavelets;
mixing the plurality of amplified wavelets with a descrambling signal to form a plurality of data-modulated wavelets; and
transmitting the plurality of data-modulated wavelets. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A circuit for mitigating spectral lines in a wireless signal, comprising:
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a data scrambler for receiving a data bit stream, performing a scrambling function on the data bits, and providing a scrambled bit stream and a descrambling signal;
a first mixer for mixing a plurality of first carrier pulses with the scrambled bit stream to produce a scrambled data stream;
an amplifier for amplifying the scrambled data stream to provide an amplified data stream; and
a second mixer for mixing the amplified data stream with the descrambling signal to produce a descrambled data stream. - View Dependent Claims (18, 19, 20, 21, 22, 23)
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Specification