Method and apparatus for positioning pulses in time
First Claim
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1. A method for positioning pulses, comprising the steps of:
- specifying pulse positioning over time in accordance with contiguous repeating time layouts about a time reference, generating a time-hopping code; and
mapping pulses to the contiguous repeating time layouts based on the time hopping code, wherein said pulses can be placed at any location within said contiguous repeating time layouts.
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Abstract
A coding method specifies pulse positioning over time according to a time layout about a time reference where a pulse can be placed at any location within the time layout. The method generates time-hopping codes having predefined properties, and a coded pulse train based on the time-hopping codes and the time layout. The time reference may be fixed or non-fixed and can be a time position of a preceding or a succeeding pulse. In addition, the predefined properties can be autocorrelation, cross-correlation, or spectral properties.
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Citations
28 Claims
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1. A method for positioning pulses, comprising the steps of:
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specifying pulse positioning over time in accordance with contiguous repeating time layouts about a time reference, generating a time-hopping code; and
mapping pulses to the contiguous repeating time layouts based on the time hopping code, wherein said pulses can be placed at any location within said contiguous repeating time layouts. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An impulse transmission system comprising:
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a Ultra Wideband Transmitter;
a Ultra Wideband Receiver; and
said Ultra Wideband Transmitter and said Ultra Wideband Receiver employ a time-hopping code, wherein said code specifies positioning of pulses over time in accordance with contiguous repeating time layouts about a time reference, and said pulses can be placed at any location within said contiguous repeating time layouts. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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Specification